INDEX. 
Rotula, 179 
Rupture of blastoderm, 256 
SACCULUS, 202 
of oviduct, 671 
Sagitta, spermatogenesis in, 693 
Salivary cells, 267 
Salivary duct, 147 : 
Salivary glands, 404 
accessory, 391 
development of, 431 
histolysis of, 310 
labial, 391, 405 
morphology of, 54 
nerves to, 61 
of larva, 59 
position and number of, 228 
Salivary reservoirs, 404, 406 
Sand-fly. See Simulia 
Sapyx larva, 18 
Sarcoglia, 285 
Sarcolemma, 285 
Sarcomeres, 286 
Sarcophaga, 5, 6, 30 
development of eye in, 543 
uterus of, 676 
Sarcostyles, 286 
Savigny on hypopharynx, 44, 132 
on mouth organs, 12 
views of, 107 
Scabellum of halter, 604, 605 
Scalze of halter, 605 
Scapal organs of halter, 611 
Scapula of Burmeister, 169 
Scatophaga, 5 
Schafer on amceboid protoplasm, 272 
Scheiber on pharynx of (Estrus, 46 
Schindler on Malpighian tubes, 413 
Schiner on dipterous larve, 27 
onnumber of segments in larva, 34 
Schiddte on mesothoracic spiracle, 
188 
Schizoccele, 253 
Schmidt, experiment of, 564 
Schneider on development of ovaries, 
99 
Schultze on retinulz, 522 
on great rods, 518 
Schwann on origin of cells, 716 
Scleral ring, 119 
Sclerites, 10, 100 
methods of examination, 213 
Sclero-cone, 516. See Crystalline cone 
Scolopale Kérperchen, 613 
771 
Scolopendra, neuromeres of, 157 
Scorpio, eyes of, 512 
neuromeres of, 157 
yelk segmentation in, 237, 239 
Scutellar bridges, 167 
Scutellum, 167 
Scutum, 166 
Secondary coelomic cavities, 252 
Sections, mode of preparation, 95 
Sedgwick on blastopore, 241 
Segment médiaire, 155, 188 
Segmental ducts, 277, 664 
Segmental organs, 253, 277 
Segmental spiracles, 181 
Segmentation. See Yelk segmentation 
Segmentation cavity, 251, 252 
Segments, abdominal, 209, 724 
cephalic, 114 
of larva, 33 
thoracic, 154 
Sehstabchen, 518 
Selenka on origin of hypoblast, 247 
Sella, 170, 178 
Semper, nuclei of, 527 
on eyes of Onchidium, 503 
Sensation in Insects, 496 
Senses and sensory organs, 496 
bibliography of, 496 
Sensory bristles, 499 
Sensory nerve terminals, 290 
Sensory ganglia, 443, 467 
development of 494 
Sensory organ on prosternum, 179,633 
Sensory organs, 496 
of larva, 71 
sporadic, 500 
Sensory papillz of larva, 36 
Sericteria, See Salivary glands. 
Serosa, 241, 244 
Serous gland cells, 279 
Sesamoid sclerite, 135 
Seta,.10 
sensory, 291 
development of, in Lepidoptera, 
21 
Setiferous sac of antenna, 585 
Sexual development, time required 
for, 5 
Sexual ducts, development of, 703 
Sexual rudiments. See Gonads 
Shaffer on leucocytes, 274 
Sharpness of vision, 567, 569 
Siebold on tympanic organs, 623 
organ of, 600 
