TELLINA. 311 



county Waterford." (Thompson on the Fauna of Irohind, 

 in tlie Report of the British Association for 1843.) Three 

 more individuals are likewise stated, on credible authority, 

 to have been taken on the coasts of Cork and Waterford. 

 (Thompson.) Da Costa observes, that he has received the 

 species from Hampshire and Lancashire ; Pulteney men- 

 tions it among his Dorset shells ; and Turton ascribes it to 

 the " Western coasts." Modern researches have not con- 

 firmed the correctness of the English localities cited by 

 authors notoriously lax upon the question of indigenous- 

 ness. Its occasional appearance on our shores is, probably, 

 to be ascribed to the frequent wreck of vessels from the 

 West Indies, where it is most abundant. 



SPURIOUS. 



We owe to the kindness of Dr. Fleming the opportunity of de- 

 scribing an interesting shell, which was mentioned (p. 43-1) in 

 his " History of British Animals," under the supposition that it 

 was the T.fragilis of Pennant, to whose figure indeed (pi. 47, f. 

 2G) it bears some resemblance, but is broader, more inequilateral, 

 and more swollen at the front ventral margin. As the teeth of 

 the two specimens, which are otherwise in excellent preservation, 

 are either accidentally broken or naturally obsolete, the generic 

 allocation can only be regarded as hypothetical, the general aspect 

 being equally like a Thracia. 



T. FRAGiLis, Fleming (not Linnoeus). 



Suboval, solid, opaque, of a shining squalid white externally, 

 dull white internally. Valves unequal ; the right the larger and 

 the more convex, the left the shallower, but not flattened. Ex- 

 terior somewhat obsoletely sulcated or even subplicated in a 

 concentric direction, and behind the umbonal ridge or indistinct 

 fold, where the surface becomes duller, more or less distinctly 

 marked with fine elevated wrinkles. Ventral margin arcuated 

 in front, ascending and subretuse behind. Anterior side decid- 



