396 



INDEX OF TEXT 



Vestibule, of rectum 115 

 Viallanes, on optic ganglion 127 

 Vigier. on compound eye 145 

 Visceral crossing 172; layer, of meso- 



derm 234; remnant 175 

 Vitelline membrane 229 

 Vitellophags 71, 231, 234, 235 

 Voinov, on blood 163; on digestion 



112; on excretion 118 

 Vortex, trachea! 184 

 Vorticelki 332 

 Vulvar scale 225, 265 



Wallace, on zoogeographical regions 



281 



Wallace's Line 298 

 Weele, van der, on ovipositor 221 

 Weissmann, on structure of muscle 203 

 Wheeler, on embryology of mid-gut 236 

 Williamson, on classification 258 

 Williamson and Calvert, on copulation 



37 



Wing 38; expansion of 47, 98; 

 histology of 47; studies and pre- 

 parations of 362 

 Wing-bases 24 

 Wing-buds 45, 74 



Wing-coloration 253 

 Wing-rudiments 46, 74 

 Wing-sheaths 45, 74, 86 

 Wing-spaces 38, 42 

 Wing-venation 38; table of 40-43 



Xanthngrion 249; X. erythroneurum 



249 

 Xanthocnemis 294 



Yolk 229 

 Yolk-plug 239 

 Yolk-sac 239 



\Zamites 306 



Zawarsin, on antennae 151 ; on blood 

 163; on chordotonal organs 155; 

 on heart 157, 161 ; on hypopharynx 

 154; on ostia-organs 160; on peri- 

 pheral nerves 134 



Zealand, New, fauna of 294 



Zoocentre 281 



Zoogeographical distribution 281 



Zyi<,nyt 299 



ZYGOPTERA defined 273; table of 

 entogenic genera of 284-5 



Zyxomma 299; Z. petiolatum 298 



CAMBRIDGE: PRINTED BY j. B. PEACE, M.A., AT THE UNIVERSITY PRESS. 



