INDEX, 



775 



Verschluss Biigel, 363 

 Verson on development of wings, 21 

 Vesicular condition of nervous sys- 

 tem, 487 

 Vespa, brain of, 440, 459, 462 



sense of taste in, 631 

 Vestibule of trachea in larva, 50 

 Viallanes on brain of Insects, 440 

 on central nervous system, 70, 



442 



on cerebron of Cricket, 454 

 on chaplet cells, 533, 534 

 on corpus centrale of Cricket, 



459 

 on development of brain in 



Mantis, 480, 488 

 on dorsal vessel of larva, 91 

 on ganglia of intestine, 59 

 on ganglion a cotes de melon, 72 

 on mantle layer of brain, 484 

 on morphology of discs, 74 

 on nerves, structure of, 288 

 on optogenic cells, 547 

 on sub-hypodermal cells, 37 

 on white nerve substance, de- 

 velopment of, 486 



Vibrations of the wing, 203 



Vibrissae, 10 



Virchow on origin of cells, 716 



Visceral arches and Arthropod limbs, 



H3 



Visceral muscles, 283 

 Visceral muscular network, 59 

 Visceral nervous system, 57, 65, 494 

 Vision, acuteness of, 567, 569 



binocular, 571 



effect of movement in, 571 



experiments on, 567 



extent of field of, 566 



in diurnal Lepidoptera, 497 



organs of, 501 



in CEstrus larva, 71 

 Vitelline membrane, 12, 683 

 Vitellus. See Yelk 

 Viviparous Flies, 5 



habits of Musca corvina, 31 

 Voeltzkow on polar cells, 248 



on primitive band, 243 

 Volucella, entocephalon of, 124 



lunula of, 126 



proboscis, development of, in, 

 322 



terminal abdominal segments of, 

 730 



Volucella, wing muscles of, 220 

 Voluntary acts, 475 

 Vorderhorn, 464 

 Vorderkopf, 114 



WASP. See Vespa 



Watery vapour an olfactory stimulant, 



594 



Wax glands, 279, 352, 360 



Weinland on functions of halteres, 



616 



on scapal papillee, 610 

 on special organs of halter, 610 



Weismann on alimentary canal, 311 

 on blastoderm, formation of, 233 

 on cell chaplets, 61, 91 

 on central nervous system of 



larva, 68 



on compound eye, 543 

 on development of cornea, 528 

 of Diptera, i 

 of larva, 259 

 on dorsal vessel, 92, 644 

 on Faltenblatt, 244 

 on germinal vesicle, 712 

 on gonads, origin of, 686 

 on great rods of eye, 544 

 on halter, 603 

 on imaginal discs, 3, 21 

 on Malpighian tubes, 424 

 on mouth organs of larva, 38 

 on nervous system, 491 

 on neuroblast of larva, 68 

 on nutrient cells of egg, 702 

 on nymph, 317 

 on optic disc, 80 

 on optic ganglia of nymph, 492 

 on polar cells, 238 



of Chironomus, 248 

 on pharynx of larva, 43 

 on proboscis, 130 

 on procephalic lobes, 259 

 on prothoracic spiracle, 181 

 on ring of larva, 78 

 on thoracic appendages, 158 

 on tracheae, 48, 354 

 on tracheal capillaries, 49 

 on visceral muscular network, 59 



West, Tuffen, on Fly's foot, 196 



Wheeler on development of nervous 

 system, 480 



Wielowiejski on Oinocytes, 276 

 on parablast, 236 



Will on amnion in Aphis, 243 



