470 



SUBJECTS INDEX 



Ephyropsidse, 119, 123. 



Epiactis, 100. 



Epibolic gastrula, see Gastrula, 



epibolic. 

 Epibulia, 68, 71. 

 Epitokal forms of Nereidas, 303. 

 Errantia, segmental appendages of, 



279. 

 Erseese, 71. 

 Esperia, 24, 27. 

 Euchaiis, 145, 151, 153. 

 Eudendrium, 42. 

 Eudoxia, 70-72. 

 Euletheria, 154. 

 Eunice, 262. 



Eupomatus, 263, 267, 289, 295. 

 Eurampha, 151. 

 Eurylepta, 161. 

 Euryleptidee, 160. 

 Euspongia, 23. 

 Eutima, 74. 

 Exogone, 262, 280. 



Fertilization, 2. 

 Flabellum, 100, 102. 

 Frustulation, 49. 

 Fungi a, 100. 

 Fungiaceee, 101. 

 FungidsB. 102. 



Galaxea, 101. 

 Galeolaria, 71. 

 Gasterostomum, 184. 

 Gasterotrochee, 271, 277. 

 Gastrea, 5. 

 Gastroblasta, 49. 



KaffaeU, 49. 



timida, 49. 

 Gastrodes, 58. 

 Gastrula, 4. 



circumcrescence, see Gastrula, 

 epibolic. 



embolic, 6. 



epibolic, 7. 



invagination, see Gastrula, 

 embolic. 

 Gemmulee, 13, 34, 35. 

 Gephyrea, 365. 

 Germinative vesicle, 3. 

 Geryonidee, 53, 

 Gnathobdellidee, 325. 

 Gonactinia, 95, 100. 

 Gonad, 2. 

 Gordiidae, 244. 

 Gordius aquaticus, 244. 



relationships of, 246. 



Villoti, 244. 



Grubea, 262, 280. 

 Gyrodactylus, 188, 189. 



Halcampa, 94. 

 Halecium, 51. 

 Halisarca, 20, 25, 28. 

 Halistemma, 60-62. 



pictum, 62 



rubrum, 62. 

 Herpetolitha, 101. 

 Heterakis, 239. 

 Heteraxonia, 10. 

 Heterocyemidse, 214. 

 Heterodera, 241. 

 Heterogeny, 2. 

 Hexacorallia, 93. 

 HexactinellidaB, 32. 

 Hexactiniae, 91. 

 Hexarthra, 260. 

 Hippodius, 59. 

 Hirudinea, 318. 



relationships of, 336. 

 Hirudo, 318, 328. 

 Holoblastic eggs, 7. 

 Holothuria, 393. 



mesenchymaof, 397, 404, 456. 



vasoperitoneal vesicle of, 410. 

 Holothurioidea, 392, 417, 426. 



cleavage in, 392. 



mesenchyma of, 400. 

 Hybocodon, 64, 72. 

 Hydra, 39, 42. 47, 51, 52. 



Koeselii, 52. 



Tremblyi, 52. 

 Hydracorallia, 53. 

 Hydractinia, 47. 

 Hydroid medusa, 39, 40, 126. 



polyp, 43, 50. 



theory, 39. 

 Hydroidea, 39. 

 Hydrozoa, 39. 



Ichthyocrinoidea, 444. 

 Infusorigen embryos of Dicye- 



midee, 213. 

 Ingression, multipolar, 9. 



polar, 6. 

 Intoshia gigas, 206. 



Linei, 206. 

 Isodyctia, 24. 



Kopfkeim (Hirudinea), 329. 



Laceration, reproduction by, 101. 

 Lampetia, 144, 151. 

 Lanice, 295. 

 Leptomedusse, 48. 



