GUDE : LIST OF HELICOID LAND SHELLS. 



129 



Pieria. 

 Section Helicogena, Fer. 



aspersa, Miill. Tyre ; Sidon ; 



Beyrouth; Jaffa, Jerusa- 

 lem. 

 = grisea, Gm. 

 lucorum, L. v. taurica, Kryn. 



I^ebanon. 

 schlaeflii, Mouss. 

 fathallae, Naeg. La Trappe 



near Abkes. 

 ligata, Miill. Jerusalem; 



Lebanon. 

 anctostoma,»Mart. Pompejopolis. 

 beilanica, West. Beilan near 



Alexandrette, 

 asemnis, Bourg. Naplouse ; 



Lebanon. 

 = solida, Zglr. 



= ciliciana, Bourg. 

 moabitica, Goldf. Moab. 

 figulina, Parr. Dead Sea. 



V. albidula, Borug. 

 pachya, Bourg. Lake Geneza- 



reth; Beyrouth ;Tibirias. 

 prasinata, Roth. Tiberias. 



= jordanica, Bourg. 

 cavata, Mouss. Jerusalem. 



= figulina V. B, Bourg. 

 engaddensis, Bourg. Judaea ; 

 Dead Sea. 

 V. concolor, Bourg. Nazareth; 

 Jerusalem, 

 pycnia, Bourg. Nazareth, 

 baristata, Bourg. Between 



Alexandrette and Orfa. 

 racopsis, Bourg. Beyrouth, 

 achidaea, Bourg. Tarablus. 



SOME NOTES ON THE GENUS PRISMA, SIMROTH. 



By WALTER E. COLLINGE, B.Sc, 



The University, Birmingham. 



(Plate ix.) 



The genus Prisma was constituted by Simroth '^' in 1891 for the 

 reception of the following molluscs : the Vaginula tourannensis of 

 Souleyet, the V. prismatira of Tapperone-Canefri, the V. triijonxis of 

 Semper, the F. pulverulenta of Benson, and a new species Prisvia 

 heynemanni. Of these, the two first and the last mentioned are probably 

 true Prismas ; and only P. tourannense and P. prismatira have 

 been figured. 



Simroth does not give any detailed description of the genus, and 

 nothing whatever is known of the anatomy. The most characteristic 

 external feature is the triangular shape of the body, when seen in cross 

 section. Simroth in 1891 wrote (op. cit., p. 596) "it is open to 

 question whether Prisma is a sub-genus of Vaginula or of Atopos or 

 whether it constitutes a genus of its own, which is most probable." 



