TELLINA. 
Prats XXVIII. 
Species 149. (Fig. a, 4, Mus. Taylor.) 
TeLLINA INORNATA. Tel. testa solidd, albd, concentricé 
striatd, ovato-subtrigond, alta ; latere postico com- 
' presso, arcuatim flexuoso, trigono, angulo radianti ob- 
tuso, margine ventrali sursum acclivi, prope angulum 
angustato, tum inflato, margine dorsali recto, valde 
declivi, termino truncato; latere antico oblique in- 
flato, expanso, prope marginem superiorem subcom- 
presso, margine dorsali rotundatim declivi, umbonibus 
acutis, retrorsis, ligamento elongato, subinfosso. 
THe PLAIN TeLLINA. Shell solid, white, concentrically 
striated, ovate-subtrigonal, elevated ; posterior side 
compressed, bent in an arch, triangular, with obtuse 
radiating angle, ventral margin sloping upwards, 
narrow close to the angle, then inflated, dorsal mar- 
gin straight, much sloping, end truncated; anterior 
side obliquely inflated, expanded, somewhat com- 
pressed near the upper margin, dorsal margin roundly 
sloping, umboes acute, sloping backwards, ligament 
elongated, partly imbedded. 
Haney, Pro. Zool. Soe. 1844. 
Hab. Conception, Chili. 
This species appears to resemble Zed/ina nasuta, but it 
is more solid, has a more striated surface, and in the 
smaller specimens the ventral margin exhibits a tendency 
to swelling near the posterior angle. 

Species 150. (Mus. Sowerby.) 
Tevuina cunnata. el. testd solidd, trigond, alta, sor- 
didé albd, striatd ; latere postico subcompresso, cune- 
ato, ante angulum radiatim inflato, angulo radianti 
valido, obtuso, ared postangulari angustd, margine 
dorsali recto, declivi, margine terminali oblique trun- 
cato, infra acuminato, margine ventrali ante angulum 
undato, valde sursum acclivi; latere antico expanso, 
valde inflato, rotundo, margine dorsali prope umbones 
elevato et subexcavato, umbonibus retrorsis, acutis, 
elevatis, ligamento subinfosso. 
CUNEATE TELLINA. 
vated, dull white, striated; posterior side subcom- 
pressed, cuneate. with a radiating swelling in front 
of the angle, radiating angle strong, obtuse, post- 
THE Shell solid, triangular, ele- 
angular area narrow, with dorsal margin straight, 
sloping, terminal margin obliquely truncated, acumi- 
June, 



nated beneath, ventral margin undated in front of 
the angle, much sloping upwards; anterior side ex- 
panded, much inflated, rounded, dorsal margin ele- 
vated and slightly excavated near the umboes, um- 
boes leaning backwards, acute, elevated, ligament 
partly imbedded. 
SOWERBY. 
Hab. iD 

The posteriorly acuminated form of this shell distin- 
guishes it from others of the same group. 

Species 151. (Mus. Taylor.) 
TELLINA CALCAREA. 
epidermide crassd indutd ; latere postico breviusculo, 
Tel. testa ovata, alba, levigata, 
subcompresso, viv radiatim angulato, flecurd incon- 
spicud, margine dorsali recto, declivi, termino sub- 
truncato, margine ventrali sursum acclivi ; latere an- 
tico oblongo, rotundo, subinflato, margine superiore 
convexo-declivi, umbonibus parvis, retrorsis, ligamento 
elongato prominenti, dentibus cardinalibus parvis, la- 
teralibus nullis. 
THE CALCAREOUS TELLINA. Shell ovate, white, smooth, 
covered with a thick epidermis; posterior side ra- 
ther short, slightly compressed, scarcely radiately. 
angular, with inconspicuous flexure, dorsal margin 
straight, sloping, end subtruncated, ventral mar- 
gin sloping upwards; anterior side oblong, round, 
subinflated, with the upper edge convexly sloping, 
umboes small, sloping backwards, ligament elonga- 
ted, prominent, cardinal teeth small, no lateral teeth. 
Cupemnitz, Conch. vol. vi. p. 140. f. 136. 
Tellina sordida, Philippi. 
Hab. Iceland and Greenland. 
More oval in form and evenly inflated than other spe- 
cies of the group. 

Species 152. (Mus. Taylor.) 
TELLINA CAYENNENSIS. Tel. testa tenui, inflatd, subtri- 
gond, alta, albi, striaté ; latere postico subcompresso, 
cuneato, angulo radianti obtuso, flewurd valida, mar- 
gine dorsali declivi, margine ventrali sursum acelivi, 
margine terminali oblique truncato, area postangulari 
1867. 
