Dr. Turtou on some new British Shells. 361 



Since committing the above observations to paper, I have seen 

 the costly and elaborate vpork of Poli ; containing among other 

 investigations, an account and anatomical dravpiugs of the animal 

 of the /. Cor of the Mediterranean. On inspecting these a con- 

 siderable diiFerence between the animals of the foreign and Irish 

 species is observable ; but vphether sufficient to authorize the 

 separation of the shells I leave for abler conchologists to deter- 

 mine. 



The foot of the Mediterranean species is much less pointed, 

 shorter, less rugose, and of a somewhat different* and lighter 

 colour than the same part in our animal. The margin of the 

 mantle in Poll's figure is strongly serrated, and of the same + fer- 

 ruginous hue as the rest of the animal ; in ours it is plain, and in 

 the healthy animal of a bright orange, while its body is of a yel- 

 lowish-white. The Mediterranean Molluscum belongs to Poll's 

 genus Glossiis, and is thus shortly defined, — 

 Glossus. Trachece X hinae foraminiformes. 



Branchice ultra abdomen simui conjunctae. 

 Abdomen ovato-compressum, pes linguiformis. 



The shell constitutes his genus Glossoderma {G. Cor. Poli.) 



* Pes miniaceo colore nitilans. Poli. 



+ Limbus (pallii) ferrugineo colore infectus. Poli. 



^ Tracheas ferrugineo colore illitse. Poli. 



Art. XLIII. Description of some new British Shells; 

 accompanied hi/ figures from the original Specimens. 

 By Dr. Turton. 



Ij 1. Galkomma Turtoni. 

 Char. Gen. Testa bivalvis, a;quivalvis, aequilateralis, transversa; 

 margine antico ovato-hiante. Cardo edeutulus. Ligamcntum 

 internum. 



II Dr. Turton had omitted to give a specific appellation to this shell, prob- 

 ably supposing it to be the only species known. Mr, Sowerby however in- 



