CONCHYLIX—DITHYRA. 26 89 



sloping to a rough flexuous point at the other, with numerotis 

 thin raised unequal striae the interstices of which are minutely 

 striate longitudinally : beaks near the swollen end : teeth strong, 

 elevated, in one valve a cloven tooth with a cavity on each side 

 for the reception of the two teeth of the opposite valve : lateral 

 teeth none. 



PsAMMOBiA testd ovato-oblongd Itsvi, cardinis fovea transversa ^'"'g'^y 



elongatd. 

 Shell oval -oblong smooth, with a transverse elongated hollow at 



the hinge. 

 Tellina Laskeyi. Montagu, Suppl. p. 28, tab. 28, fig. 3. 

 Pennant, Brit. Zool. iv. p. 178. 

 Wood, Conch, p. 179. 

 Turton, Conch. Diet. p. 173. 

 Tellina angusta. Dillwyn, Descript. Catal. p. 90. 

 Found by Captain Laskey, in the Firth of Forth. 



Shell half an inch long, and three quarters of an inch broad, 

 rounded at one end and obtusely pointed at the other, of a pur- 

 plish color and more or less clouded, covered when fresh with ami 

 olive-yellow skin ; inside white round the margin; and in one 

 valve is a marginal channel from the teeth almost to the end of 

 the longer side : in one valve a single tooth, and two approxi- 

 mate slightly cloven ones in, the other. 



We are unacquainted with this shell, but from the above de- 

 scription, extracted from Montagu, in which no mention is madts 

 of lateral teeth, suspect it to belong to this genus.- 



