- Demodex folliculorum
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Full grown
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Third Stage
- Eggs of Anopheles
- Conorhinus abdominalis
- Long-tailed thread scorpion
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Just before the second moult.
- Pediculoides ventricosus, female
- Common Tiger Beetle
- Cærostris Mitralis, in profile
- Chinch Bug
- A solpugid (Eremobates cinerea)
- Some early medical entomology
- Agalena and Her Funnel-Web
- The cattle tick (Boophilus annulatus). (a) Female; (b) male
- Culex sollicitans. Female
- Pseudargiolus Butterfly
- Ixodes ricinus; male, ventral aspect
- Common Water Spider
- Wreathed Weaving Spider
- Cimex lectularius
- The Caterpillar of the Elephant Hawk-Moth (Chærocampa elpenor). Second Stage
- Leaf-Cutter Bee at Work
- Cordylobia anthropophaga
- Relationship between a mature plant of Herpomyces stylopygae and the integument of Blatta orientalis
- Thirteen-Spotted Lady Beetle
- Chrysalis of Tomato Worm
- Left spiracle of nymph of Argas persicus
- Pigeon tick
- Representative Protozoa associated with cockroaches
- Freshly hatched larva of Julus multistriatus
- Two birds watching a bug
- Pediculus vestimenti 2
- Echidnophaga gallinacea
- Mourning-Cloak Butterfly
- Lepismas at Work
- Protozoa from the gut of the wood-feeding cockroach
- The cockroach mite
- Chiasognathus Grantii 2
- Newborn Cicada
- Larva of Pulex irritans
- Centipede
- Pupa of flea
- Common Cockroach
- American Luna Moth
- Insect frame
- Culicoides guttipennis - mouth parts of adult
- Brachinus Pursued by an Enemy
- Bees
- Pediculus vestimenti
- Cockroach (Roach)
- Violacea Butterfly
- Insect Frame 3
- Butterfly and flower frame
- Newly hatched young of Cimex lectularius
- Seventeen-year Cicada
- Every good mother should be the honored queen of a happy family
- Agalenidæ
- Culex larva showing details of external structure
- Neglecta Butterfly