TELLINA.—PuarE XXX. 
side short, narrow, radiately angular, and very flexu- 
ous, postangular area broad, compressed, elevated, 
winged, dorsal margin elevated, convex, sloping, 
terminal margin oblique, ventral margin conspicu- 
ously sloping upwards; anterior side expanded, ven- 
tral margin convex, dorsal margin much elevated, ex- 
cavated near the umboes, umboes acute, curved, liga- 
ment imbedded, hinge margin laminar. 
PHILIPPI. 
Lucinopsis Lajonkerii, 
Hab. Molucca. 

The posterior flexure and general appearance of this 
extremely elegant shell mark it as more suitably placed in 
the genus Tellina than in any other. 

Species 168. (Mus. Taylor.) 
Tevurna Taytortana. Tel. testa rosed, solidd, compressa, 
oblongo-ovali, liris crebris regularibus subrotundis ad 
margines subinterruptis concentrice sculptd; latere 
postico breviusculo, leviter angulato, vix flecuoso, mar- 
gine dorsali depresso, declivi, lirato, ared postangulari 

angustd, termino undatim truncato, infra acuminato, | 
margine ventrali prope angulum sursum acclivi, tum 
rectiusculo ; latere antico oblongo, margine dorsali de- 
clivi, margine terminal rotundo, umbonibus parvis, 
compressis, ligamento magno, conspicuo, dentibus car- 
dinalibus parvis, lateralibus posticis remotis. 
Taytor’s TELLINA. Shell rose-coloured, solid, com- 
pressed, oblong-oval, concentrically sculptured with 
close-set, regular, roundish ridges, slightly interrupted 
at the margins; posterior side rather short, slightly 
angular, scarcely flexuous, dorsal margin depressed, 
sloping, ridged, postangular area narrow, the end 
wavily truncated, acuminated beneath, ventral mar- 
gin sloping upwards near the angle, then rather 
straight ; anterior side oblong, with dorsal margin 
sloping, terminal margin rounded, umboes small, 
compressed, ligament large, conspicuous, cardinal 
teeth small, posterior lateral teeth remote. 
SOWERBY. 
Hab. Mexico. 
The concentric ridges on this beautiful shell are close 
and regular, excepting on the margins, where they are a 
little broken and divergent. 
Species 169. (Mus. Sowerby.) 
Tetiina Domepet. 
alba, levigatad, tenui, ad umbones aurantid ; latere 
Tel. testa elevatd, ovato-subtrigond, 
postico breviusculo, obscuré radiatim angulato, margini- 
bus declivibus et ucclivibus, termino subtruncato, flexurd 
subinconspicua ; latere antico oblique producto, mar- 
gine dorsali declivi, prope umbones excavato, umboni- 
bus subretrorsis, ligamento subinfosso, dentibus latera- 
libus nullis. 
Domsery’s Tenuina. Shell elevated, ovate-subtrigonal, 
white, smooth, thin, orange at the umboes ; posterior 
side rather short, obscurely radiately angular, mar- 
gins sloping upwards and downwards, end subtrun- 
cated, flexure rather inconspicuous; anterior side 
obliquely produced, dorsal margin sloping, excavated 
near the umboes, umboes rather leaning backwards, 
ligament partly imbedded, no lateral teeth. 
Hawnugy, Pro. Zool. Soc. 1844. 
Hab. Panama, Tumbez, Peru. 
More trigonal than Yedlina plebeja, which in other re- 
spects it much resembles. 

