PART II. OVULINJE. 325 



TRIVEA Gray. Shell marked with transverse, unin- 

 terrupted, elevated lines, uniting with the teeth ; the 

 aperture wide, and the extremities ohtuse ; inner 

 lip with a thickened protuberance ; pillar concave 

 within, 

 coccinella. En. M. 356. f. 1. Pediculus Auct. 



CYPR^EDIA Sw. Cyprseform; the hase contracted; 

 the body-whorl not flattened beneath ; shell cancel- 

 lated ; aperture of equal breadth throughout j a few 

 thickened, short teeth on the pillar ; lip at the base, 

 which is not internally concave.* 



C. cancellata Sw. Sp. Nov. 



CypRjEovAf Gray. Cypraeform ;-teeth of the inner lip 

 wanting, being represented by fine raised lines con- 

 tinued on the back of the shell ; aperture rather 

 effuse ; top of the outer lip much projecting. 

 C. capensis. Sow. Man. f. algoensis Gray. ( Aberrant. ) 

 444. Sow. Man. f. 447. 



SUB-FAM. 2. OVULINJE 



Oviform ; smooth, polished ; the extremities of the 

 aperture more or less produced ; inner lip without teeth. 



CYPR^ELLA Sw. Cypraeform ; inner lip thickened 

 above into a point as long as the outer lip, the mar- 

 ginal teeth of which are very regular ; a circular de- 

 pressed line at each extremity. 



C. verrucosa. En. Meth. 357. f. 5. 



OVULA Lam. Oviform ; top of the outer lip elevated 

 and produced beyond that of the inner, which is 

 turned and much thickened ; both lips equal at their 

 base, and slightly produced. 



O. ovum. En. Meth. 358. f. 1. 



BIROSTRA Sw. The two ends of the aperture suddenly 



*- Fossil only ; differing from Trivea in its contracted base, in the equsu 

 lity of its aperture, and the equal convexity of the inner lip within, 

 t Abbreviated from Cyprceovulum. This seems the strombiform type. 

 Y 3 



