Vorticifex, Meek. . IIT 
Vulpecula, Blainville. IT 
Vulsella, Lamarck. III 
Vulsellina, Raincourt.III 
Vulselling., ..7...3, Ti 
Waagenia, Bayle. . II 
Waagenia, Neumayr. II 
Waagenia, Koninck. II 
Waldheimia, King. IIT 
Waltonia, Davidson. ILI 
Warnea, Gray: .< 4. TI 
Warthia, Waagen.. II 
Whitfieldia, Davidson. III 
Whitneya,Gabb. . II 
Wilkinsonea. . . II 
Woodia, Deshayes. III 
Woodwardia, Fischer. Il 
Wyvillea, Watson. II 
Xanthomelon, Albers. III 
Xanthonella, Gray. II 
Xanthonyx, Cr. & F. III 
Xenophora, Fischer. II 
Xerocampylea, Kob. III 
Xeroleuca, Kobelt. III 
Xerophila, Held. . III 
mesta: Albers. a, DEL 
Mestina Pity (seco gal 
Xiphoteuthis, Huxley. II 
Xiphoteuthis, Owen. II 
Xolotrema, Raf. . III 
Xylohelix, Chemn. II 
Xy lophaga, Turton. Lil 
Xylophagella, Meek. IT] 
Xylotria, Leach. . III 
INDEX. 
PAGE 
105 | Yetus, Gray. . 
171 | Yoldia, Moller. . 
280 
261-| Zafra,-A. Ad: 4\-h *: 
280 | Zaphon, H. & A. Ad. 
Zaria, Gray. . 
Zebina, H. & A. “Ad. 
18 Zebinella, Morch. 
82 | Zebra, Shuttl. 
322 | Zebrina, Held. 
309 e ae Fa 
311 | Zeidora, Adams. 
118 | Zeilleria, Bayle. . 
322 | Zellania, Moore. 
324 | Zemira, H. & A. Ad. 
118 | Zenatia, Gray. . 
292 | Zenobia, Gray. . 
229 | Zephyrina, Quatr. . 
320 | Zeuxis, H. & A. Ad. 
165 | Ziba, H. & A. Ad.. 
Zierliana, Gray. 
Zilotea, Raf. . 
43 | Zingis, Martens. 
353 | Zippora, Leach. . 
57 | Zirfeea, Gray. 
216 | Zirpheea, Leach. 
41 | Zittelia, Gemm.. 
38 | Zizyphinus, Gray. . 
at || Aonitarions. Pir, i: 
26 | Zonites, Montfort. . 
26 | Zonitide. . : 
47 | Zonitoides, Lehm. . 
37 | Zonyalina, Martens. 
34 | Zoogenites, Morse. 
224 | Zospeum, Bourg. 
125 | Zua, Leach. 
126 | Zurama, Leach. . 
123 | Zygospira, Hall. 
