TELLINA. TELLEN. 
172 
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 
5 harp : beaks nearly central 5 hinge with two teeth 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 insequivalvis. Uncqual-valvcd Tellen. 
Donovan , pi. 41. f. 1— Wood, pi. 47- f. 2, 3,4— Laskey, 
JVcrn. Soc. pi. 8 . f. 2. 
Solen Pinna. Montagu, pi. 15. f. 3— Pennant, pi. G7* 
f. 3. 
Shell oval-oblong, transparent, very thin and brittle, of 
a napred 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 ; 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 nigged 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 arc enabled, 
beyond all future dcubt, 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 hack is considerably 
arched and produced at one end into a rounded point. 
On the Kentish and Devon coasts, and Guernsey: rare. 
v. m . 
15. Tellina 
