64 BOOK OF SPECIES. 



longitudinal ribs^ with a few interrupted rib-like 

 varices, crowded in particular parts. W. Sup. 

 6. 16. 



DELPHINULA. 



Sub-discoid or conic, umbilicated, solid, with the 

 whorls of the spire rough or angular; mouth 

 entire, round, sometimes triangular ; the mar- 

 gins united, and generally provided with a fringe, 

 or thickened. 



D. LACiNiATA. Sub- discoid, thick, with 

 transverse raised scaly striae, and two or three 

 keels on the body- whorl, and one on the spire ; 

 the former being the basis of great claw-like ra- 

 mose curved appendages ; colour varying from 

 light pink to pinkish black ; the spire is depressed; 

 the umbilicus large, deep, and armed with darker 

 spiral rows of vaulted scales; diam. 2\. W. 31. 

 83. 



D. DiSTORTA. Sub-discoid, thick, reddish 

 purple, with transverse sharpish - tuberculated 

 furrows; whorls flattish, angulated above, and 

 longitudinally plaited ; the last disunited, and 

 separated. W. 31. 85. 



