MUSEUM OF COMPARATIVE ZOOLOGY. 



475 



Marginella mlnuta, II. 143. 



nitida, II. 140. 



oblonga, II. 137. 



opalina, II. 13, 138, 14C. 



pallida, II. 142. 



paxillus, II. 140. 



Kedfieldii, II. 13, 139, 140, 141. 



rostrata, II. 12, 137. 



seminula, II. 13, 139. 



Smithii, II. 139. 



styria, II. 13, 14Q. 



subtriplicata, II. 142. 



succinea, II. 13, 139, 140, 141. 



torticula, II. 13, 139, 140, W. 



triplicata, II. 142. 



varia, II. 141. 



Watsonii, II. 12, 137. 



yucatecana, II. 13, 138. 

 Marsenina arapla, II. 299. 

 Mastonia, II. 21, 242, 243, 244. 

 Mathilda, II. 23, 257, 258, 266, 301, 340. 



barbadense, II. 23, 266, 267. 



elegantissima, II. 266. 



Rushii, II. 23, 267, 341. 



scitula, II. 23, 267. 



sinensis, II. 267. 



trochlea, II. 266. 



yucatecana, II. 23, 257, 266, 267. 

 Mazzalina, II. 15, 173. 



bulbosa, II. 173. 



pyrula, II. 15, 173. 

 Megaptygma, II. 150. 

 Megathyris, I. 187, 203. (See Cistella.) 

 Megerlia incerta, I. 201. 

 Megoptygma, II. 150. 

 Meiocardia, I. 271. 



Agassizii, I. 194, 271 ; II. 439. 



vulgaris, I. 271. 

 Melanella, II. 28, 326, 328. 



Dufresnei, II. 326, 328. 



gibba, II. 327. 

 Melania, II. 326, 456. 



rufa, II. 336. 

 Melanopsis, II. 132, 270. 



capula, II. 271. 

 Melantho, II. 326. 

 Meleagrina, II. 374. 

 Mesalia caribsea, II. 265. 



varia, II. 265. 

 Mesodon, II. 456. 

 Mesorhytis, II. 14, 172. 



gracilentis, II. 172. 



Meekiana, II. 14, 172. 



Mesostoma, II. 24, 269, 270. 



migrans, II. 24, 270. 



pulchra, II. 269. 

 Meta cedonulli, II. 164. 

 Metaxia, II. 22, 252, 256. 

 Microgaza, II. 30, 356, 357. 



rotella, II. 30, 357, 358 * 



solarioides, II. 358. 

 Microplax, II. 417. 

 Microvoluta, II. 163. 

 Mitra, II. 14, 98, 156, 174. 



aethiopica, II. 160. 



albicostata, II. 157. 



albocincta, II. 167, 161. 165. 



alveolus, II. 157. 

 v. antillensis, II. 158. 



Bairdii, II. 14, 161. 



barbadensis, II. 157. 



caeligena, II. 157. 



Candida, II. 157. 



casta, II. 160. 



cavea, II. 157. 



chelonia, II. 157. 



Defrancei, II. 161. 



dermestina, II. 157. 



Deshayesii, II. 14, 16u 



Dupontii, II. 157. 



ebenus, II. 157. 



exigua, II. 157. 



exilis, II. 157. 



floridana, II. 158. 



fulgurita, II. 14, 158, 165. 



fusoides, II. 163. 



geinmata, II. 157. 



granulosa, II. 157. 



Hanleyana, II. 157. 



Hanleyi, II. 157, 163. 



histrio, II. 157. 



interpunctata, II. 157. 



lens, II. 157. 



longispira, II. 160. 



Malleti, II. 159. 



maura, II. 158. 



microzonias, II. 157. 



monilifera, II. 157. 



nasuta, II. 160. 



nitilina, II. 157. 



nodulosa, II. 157. 



nucleola, II. 157. 



obliquata, II. 157. 



pia, II. 159. 



picta, II. 157. 



puella, II. 157. 



