- Common Water Spider
The female lays eggs in a bubble, which, covered with a double layer of silk and deformed into a more or less flat bulb, is hung on a water plant or in the diver's bell and carefully monitored. - Gills of the Lobster, exposed by cutting away the Side-flap of the Carapace
- Larval Stages of the Common Rock Barnacle (Balanus balanoides
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Second Stage
- Mysis relicta, One of the Mysidacea
- Diaptomus cœruleus, Female
- A diagram showing the life-history and migration of the Malaria parasite
A diagram showing the life-history and migration of the Malaria parasite, Laverania Malariæ, as discovered by Laveran, Ross, and Grassi. The stages above the dotted line take place in the blood of man. The oblong-pointed parasite is seen entering the blood at n just below No. 1. The circles represent the red blood-discs of man. Schizogony means multiplication by simple division or splitting, and it is seen in Nos. 6, 7, 8, 9, and 10. The stages below the dotted line are passed in the body of the spot-winged gnats of the genus Anopheles. A peculiar crescent or sausage-shaped condition is assumed by the parasite inside the red corpuscle No. VI. These are found to be of two kinds, male and female, Nos. VIIa and VIIb. They are swallowed by the spot-winged gnat when it sucks the blood of an infected man. Here in the gut of the gnat they become spherical; the male spheres produce spermatozoa No. Xa, which fuse with and fertilize the female spheres or egg-cells No. XI. An active worm-like form No. XIII results, which pushes its way partly through the wall of the gnat’s gut, and is then nourished by the gnat’s blood. It swells up, divides internally again and again, and is enclosed in a firm transparent case or cyst, Nos. XIV to XVIII. The cysts are far larger in proportion than is shown in the diagram, and are visible to the naked eye. The final product of the breaking up, which is called sporogony, is a vast number of needle-shaped spores or young (called Exotospores, as opposed to the Enhæmospores, which are formed in the human blood, as seen in Nos. 9 and 10, and serve there to spread the infection among the red corpuscles). The needle-shaped spores formed in the gnat’s body accumulate in its salivary glands, and pass out by the mouth of the gnat when it stabs a new human victim who thus becomes infected, No. XIX. - A Lamprey
- The cattle tick (Boophilus annulatus). (a) Female; (b) male
- First Larval Stage of the Common Lobster
- Culex sollicitans. Female
- The earliest discovered Trypanosome, described by Gruby in 1843
The earliest discovered Trypanosome, described by Gruby in 1843 as “Trypanosoma sanguinis” and found by him in the blood of the common esculent Frog. It was not noticed again until it was re-discovered by Lankester in 1871, who published the figure of it in the Quarterly Journal of Microscopical Science in that year. - Diastylis goodsiri, One of the Cumacea
- Gnathophausia willemoesii, One of the Deep-sea Mysidacea
- Chinch Bug
- Frog
- Daphnia pulex, a Common Species of Water-flea.- Female carrying eggs in the brood-chamber
- Cærostris Mitralis, in profile
- Long-tailed thread scorpion
With the Scorpions ( Thelyphonidae)) the three last abdominal members are narrow and form a short tube, which ends in a long, multifaceted thread with a stink gland. The whip is relatively short and 8-membered. The jaw gauges are thick, stocky and scissor-shaped at the end. The depicted species inhabits Java and Timor and is 32 mm without the tail. - The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Just before the second moult.
- Thaumastocheles zaleucus
- Young Specimen of an African River Crab
- Pediculoides ventricosus, female
- Some early medical entomology
- Conorhinus abdominalis
- Demodex folliculorum
- A solpugid (Eremobates cinerea)
The Solpugida have long borne a bad reputation and, regarding virulence, have been classed with the scorpions. Among the effects of their bites have been described painful swelling, gangrene, loss of speech, cramps, delirium, unconsciousness and even death. Opposed to the numerous loose accounts of poisoning, there are a number of careful records by physicians and zoölogists which indicate clearly that the effects are local and though they may be severe, they show not the slightest symptom of direct poisoning. - Conorhinus sanguisugus
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Third Stage
- Eggs of Anopheles
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Full grown
- Larva of Anopheles
- Munidopsis regia, a Deep-sea Galatheid from the Bay of Bengal
- Cyclops albidus, a Species of Copepod found in Fresh Water
- Epithelium underlying poison hairs of the larva of the browntail moth (larger scale)
- Notœdres cati, male and female
- Head of a spider showing poison gland (c) and its relation to the chelicera (a)
- The Italian tarantula
- The Savage Florida Alligator
While it is not strange that the seal can be easily tamed, we should not look for such a thing in so savage an animal as the alligator, the most feared and hated of the animals found in the waters of our Southern States. Yet even this ferocious reptile can be tamed, as the following story will show. The alligator in question was taken when very young, before its wild nature had shown itself, and was fed and attended to by its master, of whom it became very fond. It grew so tame that it would follow him about the house like a dog, even scrambling up and down stairs after him. But the funny thing about this comical pet was that its chief friend was the cat, and that pussy returned its friendship. When the cat lay drowsing before the fire, the alligator would crawl up, lay its head on her back, and go to sleep in this position. It seemed happy whenever the cat was near, but grew very restless if its furry friend was away. Raw flesh was fed to it and sometimes milk, which it liked very much. At night, in cold weather, it slept in a box, with wool for it to nestle in. But one night there came a sharp frost and the little guest was forgotten. The next morning the native of warm climates was found frozen to death. - A Frog
- Larval Stages of the Common Shore Crab
- Dancing Mania
- Tarantula Apuliae
Apulian Tarantula ( Tarantula Apuliae ): Male - Beetle louse
1) Beetle louse ( Gamasus coleoptratorum ), greatly enlarged. 2) Beetle lice on the belly of a Scarab; actual size. - Garden spider
Garden spider ( Epeira diadema ): - 1) Female. 2) Male. 3) Spider pipe. 4) Spinnerets with the vent opening (top) and the “strainer” (bottom). 5) Jaw blades and eyes. 6) Left jaw blade, the ground member of which is cut longitudinally to show the venom gland as a whole. 7) Top of the foot lid. 3–7 strongly enlarged. - Linguatula. (a) larva; (enlarged). (b) adult; (natural size)
- Locust
There has already been talk of the plague of the intestinal worms and their expulsion by Kusso; the higher standing insects occur in the highlands in large quantities only in the warmer season, but are driven back into the lower lying areas by the cold rains. The locusts , Amharic Anbasa, often cause great damage, as in the other Nile countries. - Mysis relicta, a small shrimp-like Crustacean
Perhaps the best known form with a similar range is the Schizopod crustacean Mysis relicta, which is clearly a descendant of the Arctic marine Mysis oculata, of which it was formerly considered a mere variety. - Various species of Trypanosoma from the blood of mammals, birds, and reptiles
Various species of Trypanosoma from the blood of mammals, birds, and reptiles. A. T. Lewisii, from the blood of rats; B. T. Brucei, the parasite of the Nagana or Tsetze-fly disease, found in the blood of horses, cattle, and big game; C. T. gambiense, the parasite causing Sleeping Sickness in man; D. T. equinum, which causes the mal de caderas in South American horse ranches; E. T. noctuæ, from the blood of the little owl, Athene noctua; F. T. avium, found in the blood of many birds; G. a species found in the blood of Indian pigeons; H. T. ziemanni, a second species from the blood of the little owl; J. T. damoniæ, from the blood of a tortoise; c.g., granules; v., vacuole; l.s., fold of the crest or undulating membrane. - The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Fifth Stage
- Turtle
Turtle - Larva of Simulium
- Phronima colletti, Male. From a Specimen taken in Deep Water near the Canary Islands
- Chrysomyia macellaria
- The Caterpillar of the Eyed Hawk-Moth (Smerinthus ocellatus)
- Sting of a honey bee
- Spiny Spider
In the specimen on the tree trunk, the spider field is seen protruding like a glittering black nodule in the middle of the transversely wrinkled underside of the bright blood-red abdomen, which, in addition to the 2 long, curved thorns at the rear corners, bears 2 pairs of shorter spines, which as the spots on the back are black. The front part of the body is hairy and glossy black. - The 'Fairy Shrimp' (Chirocephalus diaphanus)
- The Aspredo Cat fish
In one of the 'cat-fishes'—the Aspredo—the mother carries the eggs about with her, and this is managed in a very remarkable way. Just at the time she lays her eggs, the skin of the under surface of her body becomes swollen and spongy, and into this she presses her eggs by lying on them. Here, snugly sheltered, they remain till hatched! - Life cycle of the malarial parasite