TELLINA.—Puate XXV. 
Tellinides politus, Sowerby, Tank. Cat. 
Tellina trilatera, Gmel. 
Tellina obliqua, Lamk. 
Hab. Moluccas. = 
This Tellina resembles in form 7. aewninata, although 
it is shorter, and not quite so compressed. But the 
curious diverging lines on the corner of the posterior side 
are sufficient to distinguish it. 

Species 137. (Mus. Taylor.) 
TELLINA ELONGATA. el. testa alba, oblonga, inequila- 
terali, antice hiante, tenui, subventricosd, medio 
radiatim depressé; latere postico brevi, attenuato, 
termino late truncato, margine dorsali ared im- 
pressé subalatd, rectiusculd, margine ventrali valde 
sursuin acelivi, medio emarginato; latere antico 
elongato, margine dorsali elevato, area impressd in- 
curco, margine ventrali ad medium expanso, anticé 

ad marginem dorsalem convexo, sursum acelivi, denti- 
bus lateralibus nullis. 
ELONGATED TpLLIna. Shell white, oblong, inequi- 
lateral, gaping in front, thin, subventricose, radi- 
ately depressed in the centre; posterior side short, 
attenuated, widely truncated at the end, dorsal 
THE 
margin slichtly alated, with an impressed area, 
rather straight, ventral margin strongly curved up- 
wards, emarginated in the middle; anterior side 
elongated, dorsal margin elevated, bent inwards, 
with an impressed area, ventral margin expanded in 
the middle, convex in front, and slopmg upwards to 
the dorsal edge, no lateral teeth. 
Hanury, Pro. Zool. Soc. 1844; Thes. Conch. Tedlina, 
ify IE 
Hab. Chiriqui, West Columbia. 
The truncated form of the short posterior side, the cen- 
tral depression, and the gaping of the expanded anterior, 
give a character to this species which cannot be mistaken. 

