t^^l

220 CYEENIDJE.
prominent, eroded ; anterior margin rounded, gradually passing
into ths lower margin ; ventral margin much arched ; posterior
margin curved, somewhat truncated ; ligament short, thiii ;
ligamental sinus shallow, slightly rounded ; escutcheon and lunule
absent; interior of shell polished only at the margins ; nacre dark
violet; hinge margin narrow; lateral teeth long, the nnterior
longer than the posterior, the inner almost uniting with the
outer, those portions bordering on the cardinal teeth somewhat
swollen, the swelling increasing very gradually ; muscle and
mantle scars shallow.
Long. 17, lat. 19, diam. 12 mm.
Bah. ? India.
Type in Sandberger Coll., "Wiirzburg.
The name " violacea " having been already used by Prime in
the genus, it becomes necessary to substitute another, hence that
now given to the present species. . '
359. Corbicula inflata, Clessin.
Corbicula inflata, Clessin, in Martini & Chemnitz, 1879, p. 179,
pi. 81, figs. 14, 15.
Shell of medium size, solid, much inflated, almost equilateral,
sculptured with polished, strong, somewhat distant, concentric
rihlets, covered with a yellowish-brown periostracum ; anterior
side short, scarcely attenuated ; posterior side broadly truncated ;
umbones broad, much inflated, very prominent, strongly recurved ;
vertical transverse section broadly cordate; horizoutal contour
roundly ovate ; anterior margin somewhat curved towards the
lower margin, sharply rounded, gradually passing into the strongly
arched Literal margin ; posterior margin somewhat curved,
gradually passing into the lower margin ; escutcheon and lunule
scarcely noticeable; ligament short, very strong ; ligamental
sinus shallow, angularly notched; interior of shell polished only
at the margins, nacre pale violet; hinge margin fairly strong ;
cardinal teeth solid, much elevated, furrowed above ; lateral teeth
very long, the anterior much longer than the posterior ; margin of
the hinge much dilated in the vicinity of the two cardinal teeth;
muscle-scars shallow.
Long. 32, lat. 36, diam. 24 mm.
Hah. India.
Type in Sandberger Coll., "Wiirzburg.
360. Corbicula picta, Clessin.
Corbicula pida, Clessin, in Martini & Chemuitz, 1879, p. 179, pi. 31,
figs. 12, IS.
Shell small, somewhat iuequivalve, slightly inflated, moderately
solid, strongly concentrically ribbed, the ribs being rather closelyset,
slightly shining, covered with a dark-green periostracum and
ornamented with black, radiate bands running from the umbones