208 CXKENID.E. 



Shell rouiidedly ovate or subtrigon:il. solid, thick, dorsal margin, 

 bearing on each valve three divei'gent 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. 



3^52. Batissa inflata. Prime. 



Jjuiissa injiida, Prime, P. Z. S. xxviii, 1860, p. .■>:20 ; Cat. Corbi- 

 culidfe, 1869-70, p. 139; Sowerb}^, Conch. Icon, xx, 1878, 

 pi. 4, sp. 10 ; Clessin, in Martini & Chemnitz, 1879, pp. ^18- 

 219. 



Original deserijdioi) : — Testa magna, orbiculari, insequilaterali, 

 crassa, solida, obtusa, epidermide rugosa, fusco-nigrescente veslita ; 

 umbonibus productis, erosis obliquis ; valvis intus albis et viohiceis ; 

 dentibus cardinalibus crassis, subajqualibus ; lateralibus angustis. 



Long. 83, hit. 96, diam. 57 mm. 



Ilab. Nicobar Islands. 



333. Batissa similis. Prime. 



Batissa similis, Prime, Ann. Lye. Nat. Hist., N.Y. vii, 1859, 

 p. 112; viii, 1866, p. 229, fig. CO ; Cat. Corbiculidje, 1863, p. 5 ; 

 1869-70, p. 140, no. 25; Clessin, in Martini & Chemnitz, 1879, 

 p. 213, pi. 36, fig. 3. 



Original description: — Testa ovato-orbiculari, oblique ina^qui- 

 lateraii, tumida, solida, depressa, intus superne alba, postice 

 inferneque violacea, epidermide nigra vestita, sulcis remotis, 

 umbonibus profunde erosis ; dentibus cardinalibus tribus, sub- 

 a^qualibus, caniculatis ; lateralibus elongatis, angustis, subaequal- 

 ibus, serrulatis. 



Long. 53, lat. 79, diam. 34-5 mm. 



Hah. Nicobar Islands. 



334. Batissa capillata, Preston. 



Batissa capillata, Preston, Piec. Ind. Mas., Calcutta, ii, 1908, p. 207, 

 pi. 10, fig. 39. 



Original description: — Shell snbtrigonal, inequilateral, thick, 

 rather inflated, covered with a dark, brownish-black periostracum 

 except in the umbonal region whei-e 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 slightly 

 produced, obscurely angled ; ventral margin rounded ; ligament 

 large, prominent ; cardinal teeth broad and very coarse ; anterior 

 lateral teeth elongated, finely striate ; interior of shell purplish- 

 white, the purple staining deepening posteriorly. 



Long. 74, lat. 72 mm. 



Hab. Andaman Islands (Warneford). 



