- Normal position of the larvæ of Culex and Anopheles in the water
- A flesh fly
- A medieval method of combating the plague. The persecution of the anointers in Milan in 1630
- A millipede
- A solpugid (Eremobates cinerea)
- A true scorpion
- A whip-scorpion
- A. Head of a typical Moth
- Aëdes calopus; larva
- Agalena and Her Funnel-Web
- Agalenidæ
- American Luna Moth
- An American tarantula
- Anopheles quadrimaculatus mosquito
- Antennæ of Goniodes
- Argus persicus. Capitulum of male
- Argynnis Aphrodite
- Auchmeromyia luteola
- Beak of hemipteron
- Bees
- Bees in Clover
- Beetle louse
- Blossom of Cucurbita
- Body of an insect
- Brachinus Pursued by an Enemy
- Butterfly
- Butterfly and flower frame
- Butterfly frame
- Calliphora erythrocephala
- Centipede
- Chiasognathus Grantii
- Chiasognathus Grantii 2
- Chiasognathus Grantii, under side
- Chiasognathus Grantii, upper view
- Chinch Bug
- Chrysalis of Tomato Worm
- Chrysomyia macellaria
- Chætosoma scaritides
- Cicindela tuberculata
- Cicindela tuberculata - Larva
- Cimex lectularius
- Cockroach
- Cockroach
- Cockroach
- Cockroach (Roach)
- Cockroach-hunting wasps
- Colymbetes rufimanus
- Colymbetes rufimanus - Larva
- Common Cockroach
- Common Tiger Beetle
- Common Water Spider
- Conorhinus abdominalis
- Conorhinus sanguisugus
- Cordylobia anthropophaga
- Cross section of the larva of the browntail moth showing the tubercles bearing the poison hairs
- Culex larva showing details of external structure
- Culex sollicitans. Female
- Culicoides guttipennis - mouth parts of adult
- Culicoides guttipennis - (a) adult, (×15) (b) head of same (c) larva (d) head (e) pupa
- Cærostris Mitralis