CONCHY U\—DITHYR A. 41. 185 



Caruium tfsid ovafd ohliqud, ant ice elongatd subangulatd, eUmgatum. 



costis 2-5 aculeatis. 

 Shell oval and oblique, elongated and somewhat angular at tlie 

 anterior side, with 25 prickly ribs. 



Tab. nost. 13. fig. 8. 

 Cardium elongatiHii. Montagu, Test. Brit. p. 82. 

 Linn. Trans, viii. p. 67. 

 Titrton, British Fauna, p. 153." 

 Pennant, Brit. Zool. iv. p. 190. 

 Wood, Conch, p. 214. 

 Dillwyn, Descript. Catal. p. 131. 

 Tnrton, Conch. Diet, p 31. 

 Mus, nost. Dredged in Torbay. 



Shell a quarter of an inch long, and about a third less in 

 breadth, pale rufous with some obscure darker spots on the 

 lengthened side, somewhat oval, produced and a little angular 

 at the cartilage side, tumid in the middle and sloping to the sides ; 

 the middle ribs flattened and separated by a fine line : beaks 

 very prominent, not central, giving the shell a considerably 

 oblique outline. 



Montagu has ol>served of this very elegant shell, that the pos- 

 terior side is somewhat angulated and elongated, a circumstance 

 which we believe never takes place in this genus, supposing this 

 side to mean that which is opposite to the cartilage. Perfect 

 specimens are clothed with short sliarp prickles, wliich appear to 

 be very caducous, as in general they are smooth with a few 

 raised wrinkles on the hinder side. 



2b 



