282 



INDEX 



neuroblasts, 166 



optic ganglion, 153 



protocerebrum, 117 



segmentation of head, 107 

 Vitelline bodies, 9, 239, 254 

 Vitelline membrane, 8, 253, 254 

 Viteline spheres, 9, 12, 254 



not fat or oil, 15, 254 

 Voeltzkow, mesenteron, 74, 76 



yolk cells, 242 



Weismann, I 



amnion, 87 



cleavage, 25 



cortical layer, 10 



inner cortical layer, 31 



mesenteron, 72 

 Wheeler, abdominal appendages, 

 112 



blastokinesis, 88 



Blochmann's corpuscles, 14 



brain, 157 



frontal ganglion, 159 



germ cells, 219 



indusium, 94 



Malpighian tubules, 228 



median cord, 139, 140 



mesenteron, 73, 76 



micropylar organ, 94 



nerve fibres, 135 



neurilemma, 160 



neuroblasts, 132, 138, 166 



oenocytes, 182, 185 



optic ganglion, 153 



premandibular appendages, 109 



protocerebrum, 117 



segmentation, 107 



suboesophageal body, 211 



tracheae, 175 



yolk cells, 234, 242 

 Wielowiejsky, oenocytes, 181, 183 

 Will, genital cells, 218 



mesenteron, 72, 



yolk cells, 242 

 Witlaczil, genital cells, 218 



mesenteron, 74, 76 

 Wood worth, genital cells, 218 



Xiphidium, indusium, 94 

 median cord, 139, 140 

 oenocytes, 182, 188 

 optic ganglion, 153 

 optic lobe, 154 



Yolk, 9, 199, 200, 201, 206, 210, 

 224, 227, 230-244, 254, 261 



Yolk bodies, 13 



Yolk cells, 19, 230-244, 254 

 primary, 230, 240-244, 254 

 secondary, 236-238, 241, 242, 261 



Yolk plug, 71, 92, 93, 255 



Zygacna, cleavage, 25 

 mesenteron, 72 



