106 BOOK OF SPECIES, 



lower part ; two teeth at the base of the right 

 lip; operculum oblong, thin, horny. 



C. PERuviANus. Deep brown^ somewhat 

 tinted with olive^ transversely ribbed^ and longi- 

 tudinally wrinkled ; lip crenated ; aperture white. 

 4. W. 22. 56. 



HARPA. 



Oval, more or less inflated, with parallel inclined 

 and sharp longitudinal ribs ; spire short; aper- 

 ture notched at the loiver part ; no canal; colu- 

 mella smooth, flattened, ond pointed at the base. 



H. vENTRicosA. Ovate-veutricose, with broad 

 compressed ribs^ which are stained with purplish 

 red, mucronated at their summit, with one den- 

 ticle just beneath ; interstices white, and marked 

 with chestnut arcuated or angular spots or lines ; 

 pillar spotted with dark black and purple. 5|. 

 W. 22. 49. 



H. ROSEA. Ovate-sub-ventricose, thin; in- 

 terstices as last, but also adorned with three series 

 of rose-coloured spots ; ribs narrow and distant ; 

 pillar pinkish. W. S. 4. 23. 



H. ARTicuLATA. Differs principally from 

 Rosea by being without the crimson spots, and 

 having its ribs articulated w^ith white and black 

 alternately. E. 404. 3. 



H. MINOR. Ovate-oblong, colouring much 



