t^^l

208 CIRBNID^.
Shell roundedly ovate or subtrigonal, solid, thick, dorsal margin,
bearing on each valve three divergent cardinal teeth ; lateral teeth
curved, elongated, striate, unequal, shorter in front than behind,
double on the right valve ; ligament large, projecting, thick ;
pallial impression simple or subsinuous.
Animal having two short siphons, united at their base; mantle
lobes simple or fringed.
332. Batissa inflata. Prime.
Batissa injlata, Prime, P.,Z. S. xxviii, 1860, p. 320; Cat. Corbiculidse,
1869-70, p. 139; Sowerby, Conch. Icon, xx, 1878,
pi. 4, sp. 10; Clessin, in Martini & Chemnitz, 1879, pp. 218-
219.
Original description :—Testa magna, orbiculari, iuasquilaterali,
crassa, solida, obtusa, epidermide rugosa, fusco-uigresceiite vestita ;
umbonibus productis, erosis obliquis ; valvis intus albis et violaceis ;
dentibus cardiualibus erassis, subiequalibus ; lateralibus angustis.
Long. 83, lat. 96, diam. 57 mm.
Hah. jSficobar Islands.
333. Batissa similis. Prime.
Batissa similis, Prime, Ann. Lye. Nat. Hist., N.Y. vii, 1859,
p. 112; viii, 1860, p. 229, fig. 60; Cat. CorbiculidiB, 1863, p. 5;
1869-70, p. 140, no. 25; Olessin, in Martini & Chemnitz, 1879,
p. 213, pi. 36, %. 3.
Original description:—Testa ovato-orbiculari, oblique inasquilateraii,
tumida, solida, depressa, intus superne alba, postice
inferneque violacea, epidermide nigra vestita, sulcis remotis,
umbonibus profunde erosis ; dentibus cardinalibus tribus, subsequalibus,
caniculatis ; lateralibus elongatis, angustis, subaequalibus,
serrulatis.
Long. 53, lat. 79, diam. 34-5 mm.
Hal. Nicobar Islands.
334. Batissa capillata, Preston.
Batissa cajnllata, Prestou, Eec. Ind. Mus., Calcutta, ii, 1908, p. 207,
pi. 16, fig. 39.
Original description:—Shell subtrigonal, inequilateral, thick,
rather inflated, covered with a dark, brownish-black periostracum
except in the umbonal region where erosion has taken place,
sculptured with coarse, irregular, concentric growth-lines which
are obliquely crossed posteriorly with coarse hair-like ridges;
anterior side somewhat angularly rounded ; posterior side slightlyproduced,
obscurely angled ; ventral margin rounded ; ligament
large, prominent; cardinal teeth broad and very coarse ; anterior
lateral teeth elongated, finely striate; interior of shell purplishwhite,
the purple staining deepening posteriorly.
Long. 74, lat. 72 mm.
Hah. Andaman Islands (Warneford).