196 BIVALVE SHELLS. 



15. Venerupis corrugata, Desh. B.M. 



V. testa ovato-transversa, irregulari, compressa, insequilaterali, 

 albo-flavescente vel grisea, antice obtusa, postice latiore, obli- 

 que truncata, transversim profunde et irregulariter corrugata, 

 incisa ; postice rugis transversalibus, in medio anticeque 

 flexuosis angulosis, lituratis ; valvis intus albis, in latere pos- 

 tico intense violaceis ; sinu pallii magno, lato, profundo, apice 

 obtusissimo ; cardine angusto, dentibus tribus subaequalibus, 

 minimis, parallelis. 



Var. /3. Monstrosa ; testa elongato-angusta, postice angustata, 

 subrostrata. 



Hab. Africa orientalis. 



16. Venerupis interjecta, Desh. B.M. 



V. testa transversa, quadrangulari-ovata, valde insequilaterali, 

 antice obtusissima, brevissima,posticelatiore, perpendiculariter 

 truncata, alba, transverse insequaliter striata ; striis majoribus 

 distantibus sublamellosis, alteris exilioribus interjectis; latere 

 superiore recto, inferiore leviter arcuato, inter se parallelis ; 

 valvis mtus candidis ; cardine tridentato, dente mediano bifido ; 

 sinu pallii trigono, brevi, angulato, aequilaterali. 



Hab. Nova Hollandia, ad Flumen Cygnorum. 



1/. Venerupis tenuistriata. 



V. testa ovata, transversa, sequivalvi, insequilaterali, alba, striis 

 radiantibus tenuibus undulatis, sulcis incrementi distantibus 

 decussatis, concinne sculpta ; lateribus rotundatis, marginibus 

 dorsali et ventrali parallelis leviterque arcuatis ; lunula nuUa, 

 ligameuto longo, prominente, umbonibus parvis, acutis; cardine 

 utriusque valvse dentibus tribus compressis ; impressionibus 

 musculorum magnis, rotundis ; sinu palliari lato, profundo, 

 semilunari. 



Venerupis tenuistriata, Jonas, Proc. Zool. Soc. 1846, p. 35. 



Hab. Singapore (Jonas). 



18. Venerufis subdecussata, Desh. B.M. 



V. testa regulariter ovata, oblonga, depressa, insequilateraii, antice 

 obtusa, albo-grisea, postice squalideviolascente, longitudinaliter 

 costellata, striis costellisve incrementi subdecussata ; lunula 

 inconspicua ; area ligamenti angusta, brevi, profunde exfossa ; 

 valvis tenuibus, intus albis vel luteolis, postice violaceo macu- 



