INDEX. 



619 



Typlilosole, 497. 



Tyrrhena, 477. 



Udouella, 234. 

 Ulangia, 195. 

 Ulmaris, 167. 

 Ulnphyllia, 195. 

 Ultradextral shell, 361. 

 Uinbellula, 181. 

 Uinbilicated shell, 361. 

 Umliones, 325. 

 Unibonula, 566. 

 Umbrella, 409. 

 Umbrosa, 167. 

 Uncinais, 509. 

 Uncinate, 92, 307. 

 Uiieinatedcalamary, 445. 

 Unrinataria, 93. 

 Uncini, 460 ; of radula, 



370. 



UiK'iis, 307. 

 Undosa, 167. 

 Undulating membrane, 



39. 

 Unguiculate opercnluin, 



361. 



Ungulina, 347. 

 Umo, 327, 332, 342, 347. 

 Unionidae, 328. 

 Unyoria, 511. 

 Urceolarina, 50. 

 Urceolus, 303. 

 Urnatella, 572. 

 Urobenus, 511. 

 Urocentrum, 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. 

 Utella, 90. 

 Uteriporus, 221. 

 Uvigerina, 14. 



Vacuole contractile, 1. 

 Vaginicola, 51. 

 Yaghmlina, 14. 

 Vaginulus, 378, 385, 414, 



416. 



Valcneinia, 272. 

 Valkeria, 567. 

 Yallisia, 235. 



Valvata, 361, 377, 378, 



380, 395, 399. 

 Valves of shell, 324. 

 Valvulina, 13. 

 Yampyrella, 19. 

 Vanadis, 479. 

 Yarices, 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. 

 Vernenilina, 13. 

 Versura, 168. 

 Vertebralina, 13. 

 Vertigo, 416. 

 Vesicula seminalis, 217. 

 Vesicularia, 567. 

 Vetrovermis, 509. 

 Vetuliua, 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. 

 Vocringia, 179. 

 Vogtia, 150. 

 Voluta, 397. 

 Yolvox, 29, 32. 

 Volvula, 406. 

 Vomerula, 96. 

 Vortex, 211, 220. 



Vorticella, 38, 40, 41,51. 

 Vorticeros, 220. 

 Vorticlava, 130. 

 Vosmacrojisis, 90. 

 Vulsella, 345, 346. 



Wageneria, 256. 

 Waldheimia, 576. 577, 



585. 



Wall, coral, 192. 

 W.'ilteria, 92. 

 Webbina, 13. 

 Weherella, 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. f. w. Z. = Zcitschril't 

 fur wissenschaftliche 

 Zoologie. 



Zanclea, 131. 



Zoantharia, 183. 



Zoantheae, 189. 



Zoanthus, 189. 



Zoarium, 556. 



Zonites, 386, 416. 



Zonephyra, 167. 



Zoobotryon, 552, 567. 



Zooecium, 549 ; primary, 

 560. 



Zoopilus, 196. 



Zoothamniuni, 43, 51. 

 Zooxanthella, 21. 

 Zospeum, 416. 

 Zygartus, 23. 

 Zygohranchiate, 394. 

 Zygocanna, 134. 

 Zygocannota. 134. 

 Zygocannula, 134. 

 Zygocireus, 23. 

 Zygodactyla, 134. 

 Zygoneury, 365, 303. 

 Zygote, 27. 

 Zygote-nuclens, 14. 



