1870.] 



243 



[Dull. 



Order T^enioglossa Trosch. 



valvatid^e Trosch. 



Tropidina H. & A. Ad. 



T. tricarinata, p. 286. 

 Lyogyrus Gill. 



L. pupoideus, p. 288. 



VIVIPARIDJE Gill. 



Campeloma 1 Raf. 

 C. decisa, p. 289. 



RISSOID.E Stm, 



Pomatiopsince Stm, 

 Pomatiopsis Try on. 

 P. lapidaria, p. 295. 



Amnicolince Gill. 

 Amnieola Gld. & Hald. 



A. pallida, p. 292. A. limosa, 

 p. 293. A. grana, p. 294. 



Rissoince Stm. 

 Bissoa Frem. 



R? multilineata, p. 300. R? 

 exarata, R? Miglielsl and 

 R ? carinata, p. 301. 

 Cingula Flem. 



C ? minuta, p. 298. C ? latior 

 and C? aculeus, p. 29.9. 



[Note. The material is not at hand, 

 definitely to fix the generic place of 

 these species.] 



Skeneince Stm. ' 

 Skenea Flem. 



S. planorbis, p. 296. 



RISSOELLID.E PL & A. Ad. 



Kissoella Gray. 



R ? eburnea and R ? sulcosa, p. 

 297. 



LITTORINIDiE Trosch. 



Littorinince. 

 Littorina Fer. 



L. litorea, p. 308. L. palliata, 

 p. 309. L. irrorata, p. 311. 

 L. rudis, p. 304. L. (var.?) 

 tenebrosa, p. 306. 



LacunincB. 

 Lacuna Turt. 



L. vincta, p. 302. Lu neritoi- 

 dea; p. 303. 



cerithiid.e Trosch, 

 Ceriihiinte. 

 Bittium Leach. 



B. nigrum, p. 321. B. Greenii, 

 p. 322. 



Triforis Desh. 



T. nigrocinctus, p. 323. 



Cerithiop since. 

 Cerithiopsis 2 Fbs. . 



C. Emersonii, p. 387. C. tere- 

 bralis, p. 389. 



' turritellid^e Trosch. 

 Mesalia Gray. 



M. erosa (= polaris Beck), p. 

 317. M. reticulata and cos- 



1 Melantho of Bowditch cannot be used, as the type is an unrecognizable marine 

 fossil from the Paris basin; the name, therefore, would better be dropped. 



2 Placed by Troschel in the Cerithiidce, to which it is closely allied. 



