201 



fhaking the (hell very rough, and giving it a canceHated 

 appearance: aperture narrow, o\m1, terminating in a itrait 

 canal ; outer lip thin ; margin white, crenated by thedriac : 

 Columella ftriated tranfverfely oblique to the end of the 

 canal, and fomewhat tuberculated ; infide purple, mark- 

 ed by the ribs. Length five-eighths of an inch; breadth 

 a quarter of an inch. 



This new, elegant, and rare fpecies, we have taken a 

 few of alive, by dredging in Salcovtd bay, in Dcvonjliire. 



In all the fpecimens we have feen, the outer lip has 

 been more or lefs white, with here and there a few ob- 

 fcure fpots of the fame colour, without regularity, on 

 other parts of the fliell. 



M with a rugofe fnell, of a light brown colour : volnti- Linearis. 

 ens feven or eight, rounded, and ftrongly ribbed, croffedby Tab. 9. f. 4. 

 elevated flria^or ridges, thefummits of which are purplifh- 

 brown, and form fine, fpiral, thread-like lines, all up the 

 fliell ; thefe are, however, Ibmetimes interrupted, as in 

 fome fpecimens a few of the ridi^es are pla'n brown : the 

 fhell tapers to a fine point, and is generally darkeft at the 

 apex: in dead fpecimens that are bleached white, and 

 have lofl the lineated appearance, the apex is generallv of 

 a purple colour: the ribs are nine or ten in number: 

 aperture oval, terminating in a flrait canal; outer lip 

 thickened at the back by a rib ; margin within crenated ; 



pillar 



