406 



INDEX. 



Deformed butterflies and moths, 

 specimens of, T. 3b0, Jigs. 



De Geer's opinion of the glow- 

 worm, M. 224; classification 

 of, 382 



Delphinmm choilanthum, M. 



Deslongchamps, experiments 

 by, T. 238 



Destructive migrations, M. 

 269 



Dew-berry, moths' eggs found 

 on the, r. 126, Jig. 



Diaphora mendica, Staph., T. 

 314 



Diffusive migrations, M. 273 



Digger, M. 373,^g. 



Diptera, T. 396 



Diving water-spider, A. 365 



Division of labour, M. 292 



Dock weevil, exoeriment with, 

 A. 325 



Domestic importance of insect 

 study, M. 361 



Dorthesia, T. 88 



Dragon-fly, evolution of the, 

 T. 337 



Dragon-flies, grub of, T. 162, 

 Jig.; dissection of the grub 

 of, 162, Jig. ; mask of the 

 grub of, 164,^g.; transfor- 

 mations of, 336, 337, Jig. ; 

 male green, M.61,Jig. ; vo- 

 racity of, 159 ; male and fe- 

 male, 211 



Drilusjlavescens, A. 416 



Drink, effect of, on the saliva, 

 M. 39 



Drone of the dung beetle, M. 

 95 



Drum of the ear, T. 103, Jig. ; 

 of the field cricket, M. 78 ; 

 of the grasshopper, M.79,^g. 



Duels of bees, M. 328 



Dumeril's opinion of the glow- 

 worm, M.222 



Dunbar's experiments on queen 

 bees, M.314 



Dung-beetle, A. 249 ; cleanli- 

 ness of the, A. 250 



Dung-fly, with eggs, T. 44,^g. 



Dusky-ants, A. 283 



Dying ants ill treated, M. 304 



Dysdera erylhina, Walcke- 

 naer, T. 358, 359, Jig. ; 

 magnified head and comb 

 of, T. 359,/^. 



Dytiscus, M. 42 



Dyliscus marginalis, M. 66 



Ear of the crab, M. 117,/g. 



Ears, position of, in certain 

 animals, M. 105 



Earth-mason caterpillars, A. 

 200 ; outside walls of the 

 nests of, A. 201, 202, Jig. ; 

 moth nests, &c, 205, Jig. 



Earwig, hatching eggs, anoma- 

 lous instance of the, T. 102 



Earwigs cannot get into the 

 brain, T. 103; its jaws, M. 

 145 ; their cannibalism, M. 

 147 



Eating insects, M. 144 



Eclectic system, M. 391 



Economy of nature, reflections 

 on the, A. 214 



Eggs of insects, 19, Jigs. ; 

 structures for protecting, A, 

 23 ; of insects capable of 

 bearing great degrees of beat 

 and cold, 23 ; all insects 

 produced from, T. 1 ; not 

 dispersed in the air, 14; 

 specific gravity of, 15; ex- 

 pelled by insects from fear, 

 25 ; physiology of, 33 ; of 

 birds not protected by their 

 colour from the attacks of 

 depredators, 34 ; cause of 

 the colours of, 36 ; of ants, 

 structure of the, 38 ; spiders 

 and glow-worms, 39 ; form 

 of, 40 ; of birds, cause of the 

 oval form, 41 ; sculpture of, 

 41 ; curious appendages to, 



