TELLINA. 
Prate II. 
Species 5. (Fig. a, 6, Mus. Sowerby.) 
TELLINA SECTA. 
tidd, levigatd, valvulé dertrad convexd, altera subcom- 
Tel. testa tenuiusculd, inequivalvi, ni- 
planatd, margine ventrali subarcuato, margine dor- 
sali utrinque haud mulinm declivi, prope ligamentum 
magnum inciso, extremitate anticd rotundatd, posticad 
laté truncata, obtuse angulatad, dentibus primariis dis- 
tinctis, margine cardinali sub ligamento intus incras- 
sato, superficie interna impolitda. 
Tue cur Tevtina. Shell rather thin, inequivalve, 
shining, smooth, right valve convex, the other rather 
flat; ventral margin rather arched, dorsal margin on 
both sides not very sloping, with an incision near 
the large ligament; anterior extremity rounded, pos- 
terior widely truncated, obtusely angular, primary 
teeth distinct, cardinal margin beneath the ligament 
thickened within, internal surface dull. 
Conrab, Journ, Acad. U.S. Philad. vol. vii. p. 257 ; Sowb. 
Thes. Conch. f. 245, 248. 
Hab. California. 
Remarkable for its flattened and inequivalve form, and 
for a deep incision of the postero-dorsal margin made by 
the very large hgament. 
Species 6. (Fig. a, 6, Mus. Sowerby.) 
TELLINA MAGNA. Tel. testa ovali, oblongd, tenuiusculd, 
subcompressd, nitidissimd, levigatd, aurantio et roseo 
superne radiata, medio nebulatd et concentricé fasciatd, 
latere postico breviusculo, oblique leviter bicostato, 
acuminato, latere antico oblougo, margine dorsali con- 
vero, margine ventrali convexo, postice sursum acclivi, 
Jlecurd ventrali haud conspicud, dente cardinali uno, 
approxinato, 
THE LarGe Teniina. Shell oval, oblong, rather thin, 
subcompressed, very shining, smooth, rayed above, 

clouded in the middle and concentrically banded 
with orange and rose; posterior side rather shorter, 
obliquely lightly two-ribbed, acuminate, anterior side 
rather oblong, 
convex, posteriorly sloping upwards, ventral flexure 
not conspicuous, cardinal tooth one, near. 
SPENGLER. 
Hab. West Indies. 
A broad, flat, oval, beautifully-coloured species. 
dorsal margin convex, ventral margin 

Species 7. (Mus. Sowerby.) 
TeLtina Toneana. el. testd oblonga, tenuiusculd, sub- 
@quivalvi, converd, subequilaterali, nitidié, sublevi- 
gatd, alba, roseo ad umbones radiata, eodemque colore 
ad latera tinctd, margine ventrali subarcuato, posticé 
sursum acclivi, dorsali antice vix declivi, posticé 
leviter declivi convexo, latere postico paululum bre- 
viore, atlenuato, subrostrato, ad terminum subdentato, 
Jflewura ventrali valde conspicud, costd umbonali pro- 
minente, unbonibus tumidis, ligamento infosso, den- 
tibus lateralibus haud magnis, subequidistantibus. 
Tue TonGa TrLuina. Shell oblong, rather thin, sub- 
equivalve, convex, subequilateral, shining, rather 
smooth, white, radiated at the umboes with rose- 
colour, and tinged with the same at the sides; ven- 
tral margin subarcuate, posteriorly sloping upwards, 
dorsal scarcely sloping in front, convex, and slightly 
sloping behind, posterior side a little shorter, at- 
tenuated, beaked, slightly dentated at the end, ven- 
tral flexure very conspicuous, umbonal rib prominent, 
umboes tumid, ligament imbedded, lateral teeth not 
large, nearly equidistant. 
Quoy et Gatmarp, Zool. Voy. Astrolabe, vol. iii. p. 498. 
Hab. Island of Tonga, South Seas, 
A slightly beaked shell, beautifully raved with rose at 
the umboes, and tinged with the same colour at the sides. 

July, 1866, 
