172 TELLINA. TELLEN. 



Shell oval, thin, flat, finely striate transversely, rounded 

 at one end, the cartilage side produced into a somewhat 

 angular sharp point which is a little inflected: color pale 

 orange, glossy, often covered with a brown skin ; inside 

 pale yellow, faintly striate longitudinally, the margin very 

 sharp : beaks nearly central ; hinge with two teetli in one 

 valve and three in the other, one of which is very remote : 

 length an inch ; breadth an inch and three quarters. 



Western coasts, and Dublin bay. v. v. 



14. Tellina inaequivalvis. Unequal-valved Tellen. 



Donovan, pi. 41. f. IWood, pi. 47. f. 2, 3,4Laskey, 

 IVern. Soc. pi. 8. f. 2. 



Solen Pinna. Montagu, pi. 15. f. 3 Pennant, pi. 67. 

 f.3. 



Shell oval-oblong, transparent, very thin and brittle, of 

 a nacred white color, transversely wrinkled, somewhat se- 

 micircular at the front margin, and more or less curving 

 inwards at the back, rounded at one end, and produced into 

 an obtuse point at the other which is a little curved up- 

 wards j one of the valves a little convex and larger, the 

 other nearly flat and turning up at the back margin : beaks 

 near one end, small, pointed, curving over the flat valve, 

 the cartilage running in a more or less curved line along 

 the back and connecting the valves nearly to the end, along 

 which is a rugged ridge or slope in each valve, giving them 

 a carinated appearance : hinge with a single blunt recurved 

 tooth in each valve not locking into each other, without la- 

 teral ones. 



By the examination of a series of specimens in their va- 

 rious stages of growth, measuring from four-tenths of an 

 inch in breadth to an inch and four-tenths, we are enabled, 

 beyond all future doubt, to justify the suspicion of Montagu, 

 that these two shells are the same in their different degrees 

 of size. In the very young shell the dorsal suture is quite 

 straight, and both the sides are nearly equally rounded ; 

 when half grown it begins to put on a slight curvature in- 

 wards ; and when of full growth the back is considerably 

 arched and produced at one end into a rounded point. 



On the Kentish and Devon coasts, and Guernsey : rare. 

 y. m. 



15. Tellina 



