362 



Radul/e of Some South Australian Gasteropoda. 



By Claude M. Torr. 



(Communicated by J. C. Verco, M.D., F.R.C.S.) 

 [Read October 8, 1914.] 

 Plates XIX. and XX. 



RACHIGLOSSA. 



Trophon flindersi, Adams and Angas. 

 Pi. xix., No. 1, x 250. 



Dental formula 200 . Radula translucent, thread-like. 

 Central tooth with fine even strong cusps. Laterals single, 

 large, and shaped something like a jawbone. 



Fasciolaria Australasia, Perry. 

 PL xix., No. 7, x 250. 



Dental formula 110 . Radula very small compared with 

 the size of the shell, rather translucent. Central tooth 

 rectangular, with three small cusps, the middle one being- 

 double. Laterals very large, with ten strong cusps and one 

 diminutive cusp closely adjoining the central tooth. Only the 

 central and one lateral are drawn. 



Fasciolaria fusiformis, Valenciennes. 

 PI. xix., No. 2, x 250. 



Dental formula -]&? . Almost identical with F. austral- 

 asia, in which the trifling difference, the doubling of the 

 middle cusp of the central tooth, is only occasional. 



T^ENIOGLOSSA. 



Cypr^ea angustata, var. declivis, Sowerby. 



PL xix., No. 8, x 250. 



Dental formula i ' l '^ 1 ' i . Teeth relatively large and coarse. 

 Central tooth with one large cusp and a small one on each 

 side, also two small cusps on its base. The laterals are tri- 

 cuspid, the central cusp being large and blunt; in its great 

 breadth the base is very similar to that of the central tooth. 

 The marginals are very solid. The drawing given in Cooke, 

 Shipley, and Reed's Cambridge Natural History, Molluscs 



