Dr. Tiirton on some new British Shells. 361 



Since committing the above observations to paper, I have seen 

 the costly and elaborate work of Poll ; containing among other 

 investigations, an account and anatomical drawings of the animal 

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

 siderable difference between the animals of the foreign and Irish 

 species is observable; but whether 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 f fer- 

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

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

 lowish^white. The Mediterranean MoUuscum belongs to Poll's 

 genus Glossusy and is thus shortly defined, — 



Glossus. Tracheae % binae foraminiformes. 



Branchice ultra abdomen simul conjunctae. 

 Abdomen ovato-compressum, pes linguiformis. 



The shell constitutes his genus Glossoderma (G. Cor, Poll.) 



* Pes ininiaceo colore ri>tilans. Poli. 



+ Limbus (pallii) fernigineo colore infectus. Poli. 



:}: Tracheae ferrugineo colore illitae. Poli. 



Art. XLIII. Description of some new British Shells; 

 accompanied hy figures from the original Specimens. 

 By Dr. Turton. 



II 1. Galeomma Turtoni. 



Char. Gen. Testa bivalvis, aequivalvis, aequilateralis, transversa; 

 margine antico ovato-hiante. Cardo edentulus. Ligamentum 

 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- 



