INDEX 



281 



Ritter, genital cells, 218 



mesenteron, jt> 

 Ruckert, cleavage nuclei (of Cy- 

 clops), 22 

 Saling, mesenteron, 74 

 Sarcoplasm, 189 

 Schwangart, mesenteron, 73, 242 



genital cells, 218 



yolk cells, 242 

 Schvvartze, mesenteron, 74 



yolk cells, 242 

 Second antennal segment, 109 

 Secondary head division, 107 

 Secondary trunk division, 107 

 Secondary yolk cells, 236-238, 241, 



242, 261 

 Segmentation, 52, S3, 54. 55, 105, 



112, 255, 256 

 Serosa, 87, 255 

 Sex organs, 213-219 

 Silk glands, development, 101, 102, 

 103, 104, 105 



larva, 98 

 Sinus, ventral, 196 

 Somites, mesodermal, 101 

 Sphinx, mesoderm, 50 

 Spiracles, 99, 103, 167, 169, 170, 



. 258 

 Spiracular branch, 170 

 Splanchnopleure, 199, 201 

 Stenobothrus, mesenteron, 74 



oenocytes, 182, 188 

 Stigmata, 101, 170 

 Stomatogastric ganglion, 257. See 



also frontal ganglion 

 Stomatogastric nerve, 121, 159 

 Stomatogastric nervous system, 

 development, 157-160, 257 



larva, 121 

 Stomodaeum (stomodaeal invagin- 

 ation), 100, 102, 157, 205, 221, 

 222, 2_24, 226, 255, 260. 

 Suboesophageal body, 211 

 Suboesophageal commissure, 120, 



155, 156, 257 

 Suboesophageal ganglion, 98, 113, 



1.37, 256 

 Supraoesophageal commissure, 116, 



155. 257 

 Supraoesophageal ganglion, 256 

 Svncitia, yolk cells, 23?, 234, 238 

 Syncitium, cleavage cells, 16 



Taenidia, 168, 170 

 Tanquary, abdominal appendages, 

 112 

 amnion, 87 



Blochmann's corpuscles, 14 

 cleavage, 25, 26 

 cortical layer, 15 

 Technique, 251 

 Telias, mesenteron, 72 

 Tenebrio, mesenteron, 74, 75 

 Tentorium, development, 178, 179, 

 258 

 larva, 177, 178 

 Tichomiroff, chorion, 7 

 mesenteron, 72, 72,, 74 

 oenocytes, 181 



premandibular appendages, 109 

 Tichomirovva, mesenteron, 73 

 Toyama, corpora allata, 164 

 mesenteron, 74 

 tentorium, 179 

 Tracheal commissures, develop- 

 ment, 105, 170-175, 258 

 larva, 103, 167-170 

 Tracheal system, development, 170- 

 175, 258 

 larva, 99, 167, 170 

 Tritocerebral (premandibular) seg- 

 ment, 107-110 

 Tritocerebrum (tritocerebral 

 lobes), 115 

 development, 100, 102, 103, 143, 



144. 146, 147, r 56 

 larva, 120 

 Tschuproff, mesenteron, 72,, 74, 

 244 

 yolk cells, 244 



Uzel, appendages on tritocerebral 

 segment, 109 

 mesenteron, 75 

 mesoderm, 50 



Ventral diaphragm, development, 

 205 

 larva, 193, 196 

 Ventral longitudinal muscles, de- 

 velopment, 199, 200, 201 

 larva, 191 

 Ventral nerve cord, degenerating 

 cells, 164 

 development, 105, 124-142, 157, 



160, 257 

 larva, 98, 113-115 

 Ventral plate, 45, 46, 55, 60, 62, 



63, 64 

 Ventral sinus, 196 

 Vespa, optic lobe, 153, 157 



segmentation of head, 107 

 Viallanes, brain, 156 

 frontal ganglion, 159 



