INDEX. 



619 



Typhlosole, 497. 

 Tyrrhena, 477. 



Udonella, 234. 

 Ulangia, 195. 

 Ulmaris, 167. 

 Ulophyllia, 195. 

 Ultradextral shell, 361. 

 Umbellnla, 181. 

 Unibilicated shell, 361. 

 Umbones, 325. 

 Umbonula, 566. 

 Umbrella, 409. 

 Umbrosa, 167. 

 Uncinais, 509. 

 Uucinate, 92, 307. 

 Uncinatedcalamaiy, 445. 

 Uncinataria, 93. 

 Uncini, 460 ; of radula, 



370. 



Uncus, 307. 

 Undosa, 167. 

 Undulating membrane, 



39. 

 Unguiculate operculum, 



361. 



Ungulina, 347. 

 Unio, 327, 332, 342, 347. 

 Unionidae, 328. 

 Unyoria, 511. 

 Urceolarina, 50. 

 Urceolus, 303. 

 Urnatella, 572. 

 Urobenus, 511. 

 Urocentrimi, 47. 

 Urocyclus, 416. 

 Uroglena, 30. 

 Urolabes, 291. 

 Uroleptus, 49. 

 Uronema, 47. 

 Uronychia, 49. 

 Urosalpinx, 396. 

 Urosoma, 49. 

 Urospora, 59. 

 Urostyla, 49. 

 Urotricha, 45. 

 Urozona, 47. 

 Uruguaya, 96. 

 Ute, 90. 

 Utclla, 90. 

 Uteriporus, 221. 

 Uvigerina, 14. 



Vacuole contractile, 1. 

 Vaginicola, 51. 

 Vagi n ul ina, 14. 

 Vagirmlus, 378, 385, 414, 



416. 



Valencinia, 272. 

 Valkeria, 567. 

 Vallisia, 235. 



Valvata, 361, 377, 378, 



380, 395, 399. 

 Valves of shell, 324. 

 Valvulina, 13. 

 Vampyrella, 19. 

 Vanadis, 479. 

 Varices, 361 ; of shell, 



361. 



Vascular lamella, 112. 

 Vas deferens, 217. 

 Vela of Argonaut, 420. 

 Velarium, 157. 

 Velella, 144. 

 Veliger larva, 323 ; of 



Gastropoda, 382. 

 Velum, 109, 299, 342. 

 Velutina, 398. 

 Veneracea, 348. 

 Venerupis, 348. 

 Ventral in Actinaria 



Alcyonaria, 177, 184 ; 



in Cestoda, 247 ; cirri, 



49 ; Nematoda, 276 ; 



Pennatulacea, 180. 

 Venus, 333, 348. 

 Venus' girdle (Cestus), 



208. 



Verania, 445. 

 Veretillum, 181. 

 Vermetus, 357, 361, 362, 



380, 367, 386, 399. 

 Vermiculus, 509. 

 Vermilia, 491. 

 Verneuilina, 13. 

 Versura, 168. 

 Vertebralina, 13. 

 Vertigo, 416. 

 Vesicula seminalis, 217. 

 Vesicularia, 567. 

 Vetrovermis, 509. 

 Vetulina, 95. 

 Vexillum, 208. 

 Vibrac. = vibracula. 

 Vibracula, 553. 

 Victorella, 556, 567. 

 Villogorgia, 182. 

 Vincularia, 565. 

 Virgularia, 181. 

 Virgulina, 13. 

 Visceral commissure, 



319, 362 ; sac, 319. 

 Vitellarium, 209. 

 Vitello-intestinal, 226. 

 Vitrina, 380, 416. 

 Voeringia, 179. 

 Vogtia, 150. 

 Voluta, 397. 

 Volvox, 29, 32. 

 Volvula, 406. 

 Vomerula, 96. 

 Vortex, 211, 220. 



Vorticella, 38, 40, 41,51. 

 Vorticeros, 220. 

 Vorticlava, 130. 

 Vosmaeropsis, 90. 

 Vulsella, 345, 346. 



> 



Wageneria, 256. 

 Waldheimia, 576. 577, 



585. 



Wall, coral, 192. 

 Walteria, 92. 

 Webbina, 13. 

 Weberella, 97. 

 Wentle-trap, 398. 

 Wheel animalcule, 299. 

 Whelk, 396. 

 Willetta, 134. 

 Willia, 134. 

 Wing shell, 399. 

 Winter egg, 217, 304. 

 Worm shell, 399. 

 Wrightella, 182. 

 Wrightia, 130. 



Xenia, 178. 

 Xenophora, 398. 

 Xenospongia, 97. 

 Xiphosphaera, 23. 



Yoesia, 96. 

 Yoldia, 328, 345. 

 Yungia, 213, 223. 



Z. /. w. ^.=Zeitschrift 

 fiir wissenschaftliche 

 Zoologie. 



Zanclea, 131. 



Zoantharia, 183. 



Zoantheae, 189. 



Zoanthus, 189. 



Zoariiim, 556. 



Zonites, 386, 416. 



Zonephyra, 167. 



Zoobotryon, 552, 567. 



Zooecium, 549 ; primary, 

 560. 



Zoopilus, 196. 



Zoospore, 7. 



Zoothamnium, 43, 51. 



Zooxanthella, 21. 



Zospeum, 416. 



Zygartus, 23. 



Zygobranchiate, 394. 



Zygocanna, 134. 



Zygocannota. 134. 



Zygocannula, 134. 



Zygocircus, 23. 



Zygodactyla, 134. 



Zygoneury, 365, W*. 



Zygote, 27. 



Zygote-nucleus, 4 4 . 



