TELLINA.—Puate XXII. 
gin very sloping, excavated, with the ligament partly | 
imbedded, ventral margin sloping upwards; ante- 
rior side rather-produced, dorsal margin excavated 
near the umboes, ventral margin convex. 
Lamarck, Anim. sans vert. Tellina, n. 18. 
Hab. New Holland. 

Species 117. (Fig. a, 6, Mus. M‘Andrew.) 
TELLINA ARCUATA. 
albd, tenui, subconcentrice fleauosim liratd ; latere 
postico lateraliter arcuato, rostrato, termine truncato, 
Tel. testa parva, subovali, sordide 
margine dorsali declivi, margine ventrali, sursum ac- 
clivi, prope angulum sinuato ; latere antico inflato, 
umbonibus parvis, acutis, dentibus lateralibus nullis. 
Tur arcHED TeLtina. Shell small, suboval, dirty- 
white, thin, subconcentrically flexuously ridged ; 
posterior side laterally arched, beaked, truncated at 
the end, dorsal margin sloping, ventral margin slop- 
ing upwards, sinuated near the angle; anterior side 
inflated, umboes small, acute, lateral teeth none. 
SOWERBY. 
Hab. Jamaica. 

Species 118. 
TELLINA OCCIDENTALIS. el. testd complanatd, tenui, 
ovali-subtrigond, laevigata, albd, medio vivide rubra, 
latere postico angulato, oblique truncato, termino 
acuminato, margine dorsali declivi, margine ventrali 
sursum acclivi; latere antico longiusculo, margine 
ventrali convend, margine dorsali declivi, cardine 
dentibus subobsoletis, ligamento conspicuo, umbonibus 
parvis. 
Tur Western TELLINA. Shell flattened, thin, oval, 
subtrigonal, smooth, white, vividly red im the cen- 
tre; posterior side angular, obliquely truncated, 
with the end acuminated, dorsal margin sloping, 
ventral margin sloping upwards; anterior side ra- 
ther longer, with ventral margin convex, dorsal mar- 
gin sloping, hinge with teeth nearly obsolete, liga- 
ment conspicuous, umboes small. 
Morcu. 
Hab. West Indies. 
This shell seems to differ from Tédlina tenuis not only 
in the broad triangular patch of red colour with which 
it is painted, but also in the more acuminate form of the 

posterior side. 

