1919.] NATURAL SCIENCES OF PHILADELPHIA. 165 



CocHLicoPA LUBRicA (L.) Risso (80). The Bulimus lubricus of 

 early writers. 



FERRUSSACIA Risso (80). Ferrussacia gronoviana (Fer.) 

 Risso (80). This has been described and figured by Bourguignat 

 in his ''Etude Synonymique," p. 41, pi. 1, figs. 8, 9, 10. The double 

 "r" in the name is doubtless a misprint. 



Ferrussacia sayea Risso (80). Risso states that this shell is 

 sinistral, but Bourguignat and I have shown that it is dextral and 

 belongs to the genus Ccedlianella. 



ACICULA Risso (81). Acicula eburnea (Miill.) Risso (81). 

 A Ccecilianella which has been described and figured by Bourguignat, 

 p. 43, pi. 1, figs. 20, 21, 22. 



VEDIANTIUS Risso (81). Vediantius eristalius Risso (82, 

 fig. 24). The specimen figured by Risso is an indeterminable Ferus- 

 sacia. 



ORBITINA Risso (82). Orbitina incomparabilis Risso (82> 

 fig. 23), and Orbitina truncatella Risso (82, fig. 25), are founded 

 on immature specimens of Rumina decollata. 



CRENEA Risso (83). Crenea vitrea Risso (83). Founded on 

 immature specimens of an indeterminable species of Ccecilianella. 



SARAPHIA Risso (83). Saraphia uniplicata Risso (83), Sara- 

 PHiA UNiDENTATA Risso (84), Saraphia bidentata Risso (84), and 

 Saraphia pleyfelia Risso (84), have disappeared from the collec- 

 tion. 



Saraphia tridentata Risso (84). This is a species of Carychium 

 which has been figured by Bourguignat (pi. 1, figs. 27, 28), who has 

 given a full description with synonymy. 



Clausilia cinerea (Drap.) Risso (85). This is the Pupa simi'is 

 of Bruguiere. 



Clausilia bidens (L.) Risso (85). This is the Clausilia solida 

 Draparnaud, very common in the district, while the C. bidens of 

 Linne does not occur there. 



Clausilia charlotia Risso (86, fig. 22). This is Pupa variabilis 

 Draparnaud. 



Clausilia crenulata Risso (86). Mortillet has erroneously com- 

 pared this with C. plicaiula Draparnaud, but it is more properly 

 associated with C. rugosa Draparnaud, though distinct. The later 



