CONCHOLOGY. 169 



C. Pantherina. The Panther Cypraea. PI. 31, fig. 4. 

 Species regular, beautifully spotted like a panther. 



3. Terebellum. One species. 

 Shell convolute, thin, shining, sub-cylindrical, pointed be- 

 hind, truncated before ; aperture longitudinal, edges entire, 

 columella truncated. 



T. suhulatum. The awl-shaped Terebellum. PI. 31, 

 fig. 3. 



Answers to the above description, being the only living 

 species known. 



4. Ancillaria. Four species. 



An intermediate genus between the Terebellum and the 

 Oliva ; distinguished from the former by a callous oblique 

 band at the base of the columella ; and from the latter by 

 not having the spiral whorls separated by a groove. 



Shell smooth, oval, oblong, pointed behind, enlarged and 

 truncated before ; the columella covered anteriorly by a cal- 

 lous oblique band ; the right lip obtuse. 



Ancillaria cinnamomea. Ancillaria marginata. 



A. ventricosa. A. Candida. 



A. cinnamomea. The cinnamon Ancillaria. PI. 30, fig. 5. 

 Species with spire nearly obsolete ; shell chestnut colour, 

 with white bands ; varix of the columella reddish and some- 

 what striated. 



5. Oliva. The Olive. Sixty-two species. 



An oval, involuted, internal shell, distinguished from the 

 Ancillaria by a narrow canal continued from its upper angle 

 around the sutures of the spiral whorls. It was formerly 

 classed with the Voluta, which genus has not the canal, so 

 that they cannot be mistaken for each other. There is a 

 callosity uniting with the spiral canal, and another at the 

 base of the columella. 



Shell thick, solid, smooth, oval, elongated, sub-cylindrical ; 

 Y 



