J Hill X. 



Euchirella propria, 314, 321. 

 rostrata, 314, 321. 

 simplex, 314. 320. 

 truncata, 314. 3'22. 



Eucopidae, 20. 



Eutimalphes, 25. 

 brownei. 25. 

 -diegensis. 23. 



Eutonina, 26. 



Evaporation, effect on density, in 

 ascidian localities, 93. 



Evolution, of cestodes, 355. 



Excretory canals, in Gyroeotyle, 

 4nV. 



Explanation of plates in Cyclos- 

 tomatous Bryozoa, 270. 



Faroella, 314. 



Filicrisia geniculata, 235. 



Flame-cells, in Gyroeotyle, 407. 

 nut. 



Flotation, organs of, 177, 185. 



Fundulus parvipinnis, (3. 



Gaetanus secundus, 314. 317. 



Gaidius tenuispinus, 314, 316. 



Ganglion cells, in nervous system 

 of Gyroeotyle. 416. 



Genus Gyroeotyle, The, and its 

 significance for Problems 

 of Cestode Structure and 

 phylogeny, 353; bibliog- 

 raphy, 434. 



Geotropism in Coryniorpha, Note 

 on, 223. 



Germ-plasm, continuity of, 2, 

 3. 4. 



Glossina palpalis, 128. 



Goniodoma, 178, 179. 181. 



Goniodoma acuminatum var. amo- 

 tion, 179. 181. 

 armatum, 181. 

 (.') bipes, L83. 

 / imbriatum, is] . 182. 

 polyedricum, 181. 



Gonoeyst, 226. 



Gonoecium, 226. 



Gonyaulax, 177. 178, 182. 



Gonyaulax ceratocoroides, n. sp., 

 180, 182, 184. 

 spinifera, 1S2. 

 triacantha, 182. 



Goto, S., cited, 424. 



Grand period of growth. 107. 169, 

 172. 175. 



Graphs as species characters. 171. 

 175. 



Gravier, cited, 115. 



Gyroeotyle, acetabular region, mus- 

 culature of, 391 ; behavior 

 of living animal, 371 ; blad- 



der, 409 ; characteristics, 

 422; of the species, 376; 

 cutieula, 3S5, 386, 419; ef- 

 fect of temperature, 374; 

 egg, 380, 406; excretory 

 canals, 407; flame-cells in, 

 4o7, 409; ganglion cells, 

 416; gross anatomy, 366; 

 history of the genus, 356; 

 locomotion, 375 ; matura- 

 tion, process of, 403. 



Morphology and histology, 383; 

 material and methods, 3S3; 

 body-covering and spines, 

 384; musculature, 389; re- 

 productive organs, 395; 

 formation of compound egg 

 and cleavage, 406; excre- 

 tory system. 407; nervous 

 system, 409; sense organs, 

 417. 



Muscles, 3S5; their structure, 

 393; peripheral, (a) cuti- 

 cular, (b) intermediate, 

 390; central, 390. 



Nervous system. 409; its stain- 

 ing, 384; peripheral, 409, 

 410; central, 409, 411, 412; 

 acetabular, 412; ganglion 

 cells, 416. 



Occurrence and host, 363; orien- 

 tation. 424. 431 ; ovaries, 

 395; ovum. 401, 403; its 

 cleavage, 406 ; ovum and 

 oogenesis, 401 ; preserva- 

 tion. 383; prostate gland, 

 4oi); receptaculum ovorum, 



396, 39S; receptaculum sem- 

 inis. 398; reproductive or- 

 gans. 395, 424, rosette, 414; 

 sense-organs, 417; sensory 

 ridges, 417; shell-glands, 



397, 405; spermatogenesis, 

 401; spermatozoa, 399; 

 spines, 369, 378, 379, 384, 

 387; their distribution, 

 387; testes, 399; uterus, 

 397; vagina. 399; vitelaria, 

 396, 403; yolk-ducts, 396; 

 yolk nucleolus. 403. 



Gyroeotyle ampMptyches, 358. 

 fimbriata. 365. 366, 367. 370 

 371. 372. 377, 378, 379, 3S0 

 382, 385, 386, 388, 383, 402 

 description of. 366, 382 

 functional orientation, 431 

 proboscis. 367; rosette 

 367, 368, 369; specific char 

 acteristics. 431; spines 

 369. 



[472] 



