460 



Index. 



Turritellidae, 310. 

 Turritopsis, 91. 

 Tylodina, 305. 



Tympanum, epithelium of, 13. 

 Type, 38 



Typhus, 285, 309. 

 Typhlocyba, 400. 

 Typhlobdella, 205. 

 Typhloplana, if>i~ 

 Typlilolepta, 160. 

 Tyrosin, 8. 



Udonella, 173. 



Ulactis, 114. 



Ulonata, 403. 



Umbellularia, 121. 



Umbilicus, 285. 



Umbo, 256. 



Umbrella, 102, 290, 294, 295, 300. 



Uncini, 28. 



Uncus, 195. 



Undulina (Trypanosoma), 



Ungulina, 262. 



Ungulinidx, 270. 



Unifora, 258, 265. 



Unio, 259, 261, 265, 266, 269, 270. 



Unionacese, 262. 



Unionidae, 262. 



Univalve, 243. 



Urani.i. 



Uraster, 134. 



Urea, ;. 



Urnatelh'doe, 230. 



Urocentrum, 70. 



Uroceridx, 421. 



Uroglena, 57. 



Urolabes, 189. 



Uroleptus, 7 1 . 



Uropods, 355. 



Urostyle, 72. 



Uvella, 57. 



Uvellina, 54. 



Vacuoles, 4. 

 Vagabundoe, 375. 

 Vaginkola, 66. 

 Vaginulus, 290. 

 Valenciennes, 6. 

 Valencinia, 3, 162. 

 Valentia, 143. 

 Valvata, 295,309,310. 

 Valvatidse, 310. 

 Valvula, 407. 

 Valvulina, 53. 



Vampyrella, 49. 

 Vanes, 113. 

 Varieties, 39. 

 Veins, 32. 

 Velella, 99, 101. 

 Velellidae, 101. 

 Velum, 89, 298. 

 Venus, 256, 270. 

 Veneracene, 270. 

 Veneridrc, 220. 

 Veretillida?, 121. 

 Veretillum, 121. 

 Vermes, 48, 206. 

 Vermetida?, 310. 

 Vermctus, 285, 298. 

 Vermicella, 122. 

 Verongia, 16. 

 Veronicella, 311. 

 Veroneida?, 345. 

 Vertebrae, 134. 

 Vertebrata, 1 1, 47. 

 Vertigo, 312. 

 Vesicula intima, 60. 

 Vesiculariada?, 2 

 Vespa, 420. 



idae, 420. 

 Vexillum, 109. 

 Vihracula, .. 

 Vibriones, 9. 

 Villicrsia, 305. 

 Vir^Tilaria, 129. 

 Vitellin, 6. 

 Vitellus, 36. 

 Vitrina, 312. 

 Vogt, 177. 

 Vogtia, 98. 

 Volkmann, 6. 

 Voluta, 281, 309. 

 Volutida?, 309. 

 Volva, 308. 

 Vortex, 155. 

 Vorticella, 66. 

 Vorticellida?, 69. 

 Vorticerus, 161. 

 Vorticlava, 92. 

 VulseUa, 247, 268. 



Wagener, 20, 171. 



Wagner, 183. 



"Wagneria, 71. 



Waldeyer, 14. 



Waldheimia, 247. 



Waller, 2. 



Water-lungs Holothurian, 149. 



