LIST OF ILLUSTRATIONS 



PLATE FACING PAOB 



I. Protective Resemblance : Kallima inachis with wings expanded, 



and two specimens with closed wings. India. (Coloured) Frontispiece 



II . Spiracle of a Beetle — File-like stridulating ridge on the wing of 



a Cricket — Trachese of the Silkworm — Part of the eye-3urface 



of a Beetle. (All photo-micrographs) 4 



III. Egg clusters of Lackey Moth (Glisiocampa neustria) on twig — 



Empty egg-shells of Buff-tip Moth (Phalera bucephala) on 

 underside of leaf — Egg capsule of Cockroach (Blatta orientalis) 

 — Egg of Parasite of Peacock (Mallopihaga) — Egg of a "Stick" 

 Insect (Phasmidce) — Stalked eggs of a " Lacewing Fly " (Chryso- 

 pidce) — Eggs of a two-winged Fly (Diptera). (All greatly 

 magnified) 13 



IV. Successive stages in the transformation, from Caterpillar to Chry- 



salis, of the Silver-washed Fritillary Butterfly (Argynnis 

 paphia) ........... 17 



V. Successive stages in the transformation, from Chrysalis to Perfect 

 Insect, of the Silver-washed Fritillary Butterfly (Argynnis 



paphia) .18 



VI. Pupa of Swallow-tail Butterfly (Papilio machaon) : greatly magni- 

 fied — Pupa of Brimstone Butterfly (Gonopteryx rhamni) : greatly 

 magnified — Pupa of Convolvulus Hawk-moth (Sphinx con- 

 volvuli) — Pupa of a Bee (Megachile) : greatly magnified — 

 Cocoon of Silkworm Moth (Bombyx mori) .... 24 

 VII. Head of Cockroach (front view) showing mouth-parts — Head of 

 Cockroach (from behind) showing mouth-parts (after Miall 



and Denny) 41 



VIII. Head of Cicada (front view) showing mouth-parts (after Marlatt) 

 — Head of Worker Hive-bee (front view) showing mouth-parts 



(after Cheshire) 43 



IX. Head of Death's Head Moth (from beneath) showing mouth-parts 

 — Head of Gnat (from above) showing mouth-parts (after 

 Folsom) 44 



X. Leg of a Beetle — Fore-leg of a Mantid — Tibia and tarsus of hind- 

 leg of Worker Hive-bee (Apis mellijica), outer (to left) and 



inner aspects : greatly magnified 54 



is 



