388 tellinid^e. 



chi) ; Sicily (Philippi). Its southern limits comprise 

 the North Atlantic from the Boulonnais to the Lusi- 

 tanian coasts and Madeira, the Mediterranean, Black 

 Sea (Krynicki), and iEgean, at depths between 7 and 50 

 fathoms ; and the two varieties have a range of nearly 

 equal extent. 



This elegant little shell can scarcely be mistaken for 

 any other of the Tellens above described. Specimens 

 vary in having the strise more or less compact j in the 

 young these are laminar on the posterior side. 



It is the T. trifasciata of Pennant (but not of Linne), 

 T. variegata of Poli, and T. subcarinata of Brocchi. This 

 and the following species have many characters in com- 

 mon with Psammobia, and appear to form a connecting 

 link between the two genera. 



8. T. pusil'la*, Philippi. 



/. pusilla, Phil. Moll. Sic. i. p. 29, t. iii. f. 9, a, b. T. pygmcea, F. & K. i. 

 p. 295, pi. six. f. (i, 7. 



Body shaped like that of T. donacina, whitish and transpa- 

 rent : mantle plain-edged and not fringed : tubes nearly con- 

 tiguous, although separate; incurrent tube bag-shaped, ex- 

 tremely short ; excurrent much longer, very broad and dilated 

 at the base, and then becoming cylindrical, four or five times 

 the length of the other tube ; orifices of both plain : foot very 

 large, serrated at the sides. 



Shell so closely resembling a dwarf or miniature form of 

 the last species, that it is only necessary to point out the dif- 

 ference. This never attains one-fourth of the cubical contents 

 of T. donacina : it is more convex in every part and propor- 

 tionally more solid : the sculpture is much finer and more 

 regular : the colouring is brighter and more varied, being rose, 

 pink, flamecolour, orange, sulphur, lemon, or milk-white, fre- 

 quently of a uniform hue, but more often diversified by rays 

 as in the other species, besides having the longitudinal streak 

 on each side of the beaks ; specimens have occasionally trans- 



* Little. 



