- Head and pronotum of (a) dog flea; (b) of cat flea; (c) of hen flea (d) Nycteridiphilus (Ischnopsyllus) hexactenus
- Sarcoptes scabiei. Diagrammatic representation of the course in the skin of man
- Xenopsylla cheopis, male
- Electric Eel
The electric eel. There are several species inhabiting the water, and which have the power of producing electric discharges by certain portions of their organism. The best known of these are the Torpedo, the Gymnotus, and the Silurus, found in the Nile and the Tiger. In the Surinam eel, the electric organ goes the whole length of the body along both sides. It is able to give a very severe shock, and is a formidable antagonist when it has attained its full length of 5 or 6 feet. - Dermanyssus gallinæ, female
- Pediculus showing the blind sac (b) containing the mouth parts (a) beneath the alimentary canal (p)
- Muscina stabulan
- Salivary glands of Notonecta maculata
- Culicoides guttipennis - (a) adult, (×15) (b) head of same (c) larva (d) head (e) pupa
- Dipylidium caninum. The double pored tapeworm of the dog
- Rasahus biguttatus
- Mandible of Scolopendra cingulata showing venom gland
- Epithelium underlying poison hairs of the larva of the browntail moth
- The yellow fever mosquito (Aëdes calopus)
- Poison apparatus of a honey bee
- Harvest mites. (Larvæ of Trombidium)
- Calliphora erythrocephala
- Left hand stigmata of the larvæ of muscoidea
- Section through a venom gland of Latrodectus 13-guttatus showing the peritoneal, muscular and epithelial layers
- Sepsis violacea; puparium and adult
Sepsis violacea; puparium and adult - Sarcoptes scabiei, male
- Dipylidium caninum. Rostrum evaginated and invaginated
- Reduvius (Opsicœtus) personatus
- Otiobius (Ornithodoros) megnini, male. (a) dorsal, (b) ventral aspect
- Larva of Fannia scalaris
- Lucilia cæsar
- Two common centipedes
- Cross section of the larva of the browntail moth showing the tubercles bearing the poison hairs
- Sarcoptes scabiei, female
- Life cycle of the malarial parasite
- Dog flea
- Chrysomyia macellaria
- Sting of a honey bee
- Larva of Simulium
- Linguatula. (a) larva; (enlarged). (b) adult; (natural size)
- The Italian tarantula
- Dancing Mania
- Head of a spider showing poison gland (c) and its relation to the chelicera (a)
- Epithelium underlying poison hairs of the larva of the browntail moth (larger scale)
- Larva of Anopheles
- Notœdres cati, male and female
- Conorhinus sanguisugus
- Demodex folliculorum
- Conorhinus abdominalis
- 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. - Eggs of Anopheles
- 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. - Pediculoides ventricosus, female
- Some early medical entomology
- Culex sollicitans. Female
- The cattle tick (Boophilus annulatus). (a) Female; (b) male
- Ixodes ricinus; male, ventral aspect
- Cordylobia anthropophaga
- Left spiracle of nymph of Argas persicus
- Echidnophaga gallinacea