210 CYREXIDJE. 



336. Velorita cochinensis (Hanley). 



Cyrena cochinensis, Hanley, P. Z. S. xxvi, 1858, p. 54-3. 



Cyrena corbiculiformis, Prime, Proc. Acad. Nat. Sci. Philadelphia, 



I860, p. 80 ; Cat. Corbiculidse, 1863, p. 6. 

 Velorita cochinensis, Hanley, Ann. Lye. Nat. Hist. N.Y. viii, 1866, 



p. 236, tig. 66 ; Prime, Cat. Corbiculidee, 1869-70, p. 141, no. 1 ; 



Clessin, in Martini & Chemnitz, 1879, p. 225, pi. 30, figs. 5 & 6. 



Original description: Testa cordata, crassa, valde inaequilate 

 obliqua, ventricosa seii tumida, epidermide nitente, nigro- 

 fuscescente vestita, sulcis remotiusculis antice exarata, postice magis 

 minusve laevigata ; extremitate lateris antici perbrevis rotundata ; 

 lateris postici attenuati productique, in adultis obtusa, in junioribus 

 rotundato-acuminata : niargine ventrali arcuato antice valde, 

 postice parum acclivi : natibus obliquis, erosis, prominentibus : 

 lunula nulla, loco ejus autem sulcorum experfce: area dorsali postica 

 lata, retusa : superficie interna alba, niargine cardinali violaceo 

 sparso, concavitate noununquairi rubescente, sinu palliari vix ullo : 

 dentibus primariis vix emarginatis ; lateralibus haud mariifeste 

 striatis, sub lente autem minutissime corrugate -granosis, antico 

 brevi et valde approximate, postico elongato et remotiore. 



Long. 47, lat. 38 mm. 



Hab. Cochin. 



In a note following the original description, the author makes 

 the following remarks : " .... The primary teeth are somewhat 

 peculiar, and have a tendency to shelve outwards ; the hinder 

 and central ones are not strictly bifid, but exhibit a kind of 

 shallow sublateral grooving; the front one in the right valve 

 is very short, and simply pyramidal. The beaks are probably 

 acute when young; the surface below the epidermis is reddish 

 purple." 



The following measurements are taken from three specimens 

 in the British Museum, labelled as coming from the Malabar 

 Coast : 



1. 2. 3. 



Long 34 35 32 mm. 



Lat..... 3625 35'75 33mm. 



Diam. . 23-5 25-5 22 mm. 



Genus CORBICULA. 



Corbicula, Megerle, Mag. Gesell. Naturf. Berlin, v, 1811, p. 56. 



Tellina \pars), Muller, Verm, ii, 1774, p. 205. 



Venus (pars), Chemnitz, in ^Martini & Chemnitz, Conch.-Cab. vi, 



1782, p. 320. 



Cyclas (pars), Bruguiere, Encycl. M<th. 1792. 

 Cyrena, Lamarck, A mm. sans Vert, v, 1818, p. 552. 

 Venulites, Schloth., Petref. 1820, p. 200. 



TYPE, Corbicula flumindlis, Megerle. 



Ranye. Tropical and subtropical regions of the world. 



