PURPURINiE. 125 







fuscata, A. Adams. orientalis, A. Adams, 



luguhris, Adams and Reeve. pallida, A. Adams. 



lyrata, La7n. striata, A. Adams. 



Owenii, GiriT/. sulcata, A. Adams. 

 pulchella, Adams and Reeve. 



Sub-fam. PURPURIN^. 



Operculum oblong, nucleus elongate, forming the long- 

 outer edge. 



The eyes in this sub-family are usually placed near the 

 tips of the tentacles ; the siphon is short, and the foot 

 moderate. The shell is most frequently oval ; the spire 

 shorter than the aperture, and the inner lip broad and more 

 or less flattened. 



Genus CHORUS, Gray. 



Shell ovate, ventricose ; spire elevated ; aperture oval, 

 wide ; canal straight, produced in front ; columella smooth, 

 curved ; outer lip with a prominent tooth at the fore part. 



Ew. C. monoceros, JDesha^/es, pi. 8, fig. 6. Operculum, 

 C. monoceros, fig. 6, «, 6, b. 



This genus, from the length of the canal, would appear 

 to have a strong afiinity with the Muricidee, but the form 

 of the operculum shows that its true place is in the purpu- 

 riform division of the Buccinid<e. 



Species of Chorus. 

 monoceros. Desk. xanthostoma, Brod. 



