38 



My finest specimen measures only two lines more in 

 length and breadth than the average dimensions given 

 in the description; but Lilljeborg obtained some in 

 Finmark of a much larger size. I made an inexcusable 

 blunder in stating (Ann. Nat. Hist. Sept. 1859) my 

 belief that the present species was identical with T. dis- 

 tort a. 



This is the Tellina fragilis of Pennant (but not of 

 Linne) ; and that specific name ought perhaps to be 

 retained. It is also the Mya punctulata of Renier, 

 Ligula pubescens of Montagu (" smaller specimens"), 

 Amphidesma phaseolina of Lamarck, and Anatina trun- 

 cata of Macgillivray (Aberd. Moll.). Chiereghini enu- 

 merated it in his list of Adriatic shells as Mya truncata, 

 according to his learned editor Dr. Nardo : this shows 

 the difficulty of ascertaining the limits of geographical 

 distribution, if we trust to local catalogues which have 

 not been compiled by competent authorities, nor been 

 subjected to such revision. The variety villosiuscula is 

 the T. ovata of Brown, and Anatina intermedia of Clark. 



HW* 

 3. T. PUBEs'cENs*,^Pulteney)(5t*4:) z-4* 



Mya pubescens, Pult. Cat. Dors. p. 27, pi. iv. f. 6. T. pubescens, F. & H. i. 

 p. 226, pi. xvi. f. 2, 3. 



SHELL of a gigantic size and considerable solidity compared 

 with T. papyracea ; it is also more of an oval shape, being 

 proportionally longer from the beaks to the front margins, and 

 shorter in a transverse direction ; the smaller or left valve is 

 flatter, and the inequality of the valves is more observable ; 

 the umbonal part is sculptured by rather strong, but obscure 

 concentric ribs or folds ; the whole surface is finely granulated, 

 although more strongly at the sides ; the colour is sandy, in- 

 stead of white ; it is of a dull hue ; and the epidermis has 

 more of a yellowish cast. L. 2. B. 3. 



* Fal 1 -grown. 



