INDEX 



275 



Contraction of egg, 95 



Corethra, oenocytes, 181 



Corpora allata, development, 161- 



164, 257 

 larva, 122, 124 

 Cortical layer, 10, 27, 29, 31, 34, 35, 



254 

 inner, 31, 34, 35, 3$, 40, 42, 238, 



254, 255 



Crepidula, cleavage nuclei, 22 

 CZERSKI, mesenteron, 74 



DEEGENER, mesenteron, 74 

 Degenerating cells, 164-166, 257 

 Dermaptera, brain, 157 



inner cortical layer, 31 



optic lobes, 154, 157 



protocerebrum, 116, 117 



tritocerebral segment, 109 



yolk cells, 240, 241 

 Dermatoblasts, 126, 129, 130, 257 

 Deutocerebral segment, 107, 108 

 Deutocerebrum (deutocerebral 

 lobes), 115 



development, 143, 144, 147, 148. 

 164, 1 66, 255 



larva. 100, 162, 119 

 Deutoplasm, 9, 15 

 Diaphragm, dorsal, development, 

 200, 201, 204, 205, 215, 259 



larva, 193, 194, 195 



ventral, development, 205 



larva, 193, 196 

 DICKEL, 3 



blastoderm, 33 



cleavage, 26 



irregular mistoses, 231 



mesenteron, 71, 73 



method of obtaining eggs, 245 



rate of development, 246 



yolk cells, 241 



"yolk plug," 71, 92, 93 

 Dilators of pharynx, 156, 177 

 Diptera, yolk, 241 

 Di.rippus, mesenteron, 74, 77 



yolk cells, 244 

 DOHRN, mesenteron, 72, 75 

 Donacia, appendages on tritocere- 

 bral segment, no, in 



irregular mitoses, 231 



median cord, 141 



mesenteron, 73, 75 



mesoderm, 210, 211 



neuroblasts, 130, 139 



oenocytes, 183 



primary dorsal organ, 93, 94 



yolk cells, 235, 236 



Dorsal diaphragm, development, 



200, 201, 204, 205, 215, 259 

 larva, 193, 194, 195 



Dorsal longitudinial muscles, de- 

 velopment, 200, 201, 215 



larva, 191 

 Dorsal organ, 94 

 Dorsal strip, 38, 43, 82, 83, 90, 255 

 Doryphora, Malpighian tubules, 

 228 



mesenteron, 73 



neuroblasts, 132 



yolk cells, 234, 242 

 Drepanosiphum, mesenteron, 74 

 Drone egg, blastoderm, 36 



cleavage, 26 



mesoderm, 51, 52 



polar bodies, 92, 93 

 Duration and rate of develop- 

 ment, 245-250 



Ectobia, mesenteron, 74 

 Ectoderm, 78, 80, 81, 124, 170, 178, 



222, 255 



embryonic and non-embryonic, 



179, 1 80 

 Egg, changes in form, 95, 97 



color, 4 



contraction, 95 



membranes, 7 



mode of deposition, 5 



polarity, 4, 253 



shape, 4 



size, 4 



Embedding in paraffin, 253 

 Embryo, external changes in form, 



97-105 



Endoskeleton, 175-179 

 Endromis, mesenteron, 73 

 Enteric muscles, development, 199, 



201, 202, 203-210 

 larva, 192 



Entoderm, 56, 75, 76 

 Ephemeridea, oenocytes, 182 

 Epineural sinus, 199, 200, 211 

 Epitheca, mesenteron, 73, 74 

 ESCHERISCH, mesenteron, 73, 77 



neuroblasts, 132 



External changes in form of em- 

 bryo, 97-105 



External medullary mass, 155 

 Eye, compound, 151 



Fat body, evelopment, 199, 201, 

 203, 209, 210, 259 



larva, 193 

 Fat cells, 193, 216 



pericardial, 203, 259 



