154 



231. ? Potamidis, 18 ? Potamide, Brong. {Geol. Paris, Ann. Mus. 

 XV. t. 22. f. 3). Cerithium, sp. Desh. P. Lamarckii, Bronį/. 



232. ? Potamidum, Flem. 1828 {Sow. M. C. t. 341. f. 1 & 2). P. 

 acutum. 



233. Cerithium, Adam. 1/57 ; Brug.;Lam. 1822. C.(Popel),^</ff«s. 

 Murex radvda. 



Cerithium, Montf. 1810, 511 . Rhinoclavis, sp. Swains. 1840, 315. 



Mur. vertagus. 

 Cerithium y, Schum. 1817. Rlunocla-s-is, sp. Sivains. 1840, 315. 



Mur. aluco. 

 Cerithium, ia»i. 1801, Sivains. 1840, 316. Cerithium /3, Schum. 



1817. C. nodulosum, Brug. 



234. Bittium,iefl!cAiH-S'5'. 1819. Terebra, sp. jP/e?«. Strombiformis, 

 sp. Da Costa. Nassa, sp. Say. Mur. reticulatus, Mo7it. 



235. Pirenella. Cerithium, sp. Risso, 1826 ; Philippi. Pyrena, sp. 

 (nigra), Ch. ^ Jans. Cerithium mammillatum, Philippi. 



? Cerithium, sp. Lam., Sow. Cer. tuberculatum, Soįv. 

 Cerithium torulosum, Brug., Lam. ii. 27, is only a monstrosity of 

 Cerithium vidgatum. 



236. Cerithidea, Sivains. 1840. Potamides, Gray, 1840. Cerithium 

 (sp. 16), Lam. 1822. Turbo, sp. Dillw. Murex decoUatus. 



Cerithium, Flem. 1828. Strombiformis, sp. Da Costa. Strom- 

 bus costatus. 



237. Tympanotomos, Klein, 1753 ; Schum. 1817, 211. Tympanoto- 

 mus, Gray, 1840. Potomis, Stvains. 1840. Nerita, sp. Miiller. 

 Ligula, sp. Humph. 1797. Potamis or Potamides, Sow. Man. 

 236. Murex fuseatus, Linn. 



238. Telescopium, Chemn. ; Montf . 1810, 439; Schum. 1817, 233. 

 Terebralia, sp. Smains. 1840, 315. Cerithium, sp. Brug. Tro- 

 chus Telescopium. 



239. Glottella. Melania armigera, Say. 



240. Pyrazus, Montf. 1810, 459. Terebralia, sp. Swains. 1840, 315. 

 Cerithium a, Schum. 1817, 224. C. (potamide), Blainv. 1825. 

 Potamides, Cuvier, 1817. Strombus palustre. 



Triphorina. 



241. Triphoris, Besh. « 1824," 1830. Triphore, Besh. Triphorus, 

 Swains. 1840, 342. Triphora, G.Soio. Triph. plicatus, Desh. 



Tristoma, Blainv. (not Desh. ; see JE. M. 1053) ; uot Cuvier. Tri- 

 phoris, sp. Desh. Cerith. tristoma, Blainv. 



Bittium, sp. Leach, 1819. Mastonia, sp. Loven. Terebra, sp. 

 Flem. Cerithium, sp. Lam. Mur. adversum, Montag. 



Mastoma, Hinds, 1842. Tri. vulpiaus. 



Sychar, Hinds, 1844. Triph. vitreus. 



Ino, Hinds, 1844. Triph. gigas. 



