INDEX TO VOL. IV. 



The synonyms, as well as the names of spurious species, and of species, 

 genera, and other groups which are not described in this volume, are in 

 italics. The figures in smaller type refer to the page in which the description 

 of species, genera, and higher groups will be found. 



Acera, Cuv., 447. 

 Acer a, Lam., 429. 

 ACERA, Mull., 429, 431, 457. 



bullata, Mull., 68, 430, 431. 

 Achates, Gistel, 186. 

 Achatina, 436. 

 Acirsa, Mo'rch, 98. 



borealis, Beck, 98. 

 ACLIS, Lov., 99, 102, 107, 110, 192. 



ascaris, Turt., 102, 103, 105, 106. 



Gulsonse, Clark, 106, 107, 115. 



supranitida, S. Wood, 100, 103, 

 105. 



unica, Mont., 100, 107. 



Walleri, Jeffr., 105. 

 ACTION, De Montf., 110, 432, 433. 



subulatus, S. Wood, 435. 



tenellus, Lov., 435. 



tornatilis, L., 433, 435. 



tornatilis, var. tenella, 435. 

 Acteon, De Mont., 432. 

 ADEORBIS, S. Wood, 230, 231. 



subcarinata, F. & H., 231. 



subcarinatus, Mont., 231. 



supranitida, S. Wood, 232, 

 Admete, 248. 



crispa, Moll., 248. 



viridula, Fabr., 248. 

 Akera, Mull., 429. 



bullata, Mull., 430. 

 Alvania, Leach, 2, 3, 100-. 



albetta, Leach, 104. 



Beani, Brus., 13. 



Cranchiana, Leach, 129. 



Europea, Risso, 50. 



Fremingvilleana, Risso, 50. 



glabra. Leach, 104. 



mamillata, Risso, 50. 



supranitida, S. Wood, 103. 

 VOL. IV. 



Amauropsis, Mo'rch, 212. 

 Amethystina, Schintz, 186. 

 Ammonicerina, Costa, 69. 



paucicostata, Costa, 73. 



pulchella, Costa, 73. 



simplex, Costa, 71. 

 Amphidesma nitens, 50. 

 Amphisphyra, Lov., 419, 420. 



expansa, Jeffr., 426. 



globosa, Jeffr., 425. 



globosa, Lov., 419, 425, 426. 



hyalina, F. & H., 427. 

 Amputtaria, 220. 

 Ancylus lacustris t 445. 

 Anomia, 309. 

 Aplustrwm, 419. 

 Aplysia, 88, 410, 429, 433. 

 Aporrais, Gualt., 249. 

 APORRHAI'DJE, Trosch., 248, 274. 

 Aporrhais, Aldr., 249. 

 APORRHAIS, Da Costa, 249, 295. 



Macandrese, Jeffr., 253, 294. 



pes-carbonis, Brongn., 254. 



pes-carbonis, F. & H., 253. 



pes-pelecani, L.,249, 250, 254, 264. 



quadrifidus, Da Costa, 252. 



Serresiana, 254, 294. 

 Aporrhais, Klein, 249. 

 Aquillus, De Montf., 305. 

 Architectomida, Gray, 231. 

 Architectonicidce, H. & A. Adams, 



231. 



Argonauta, 183. 

 Assiminea litorina, 71. 

 Assula, Schum., 443. 

 Auricula. Lam., 129. 



bifasciata, Mart., 436. 

 Auriculina, Gray, 109. 



exilissima, Brus., 144. 

 Y 



