100 BIVALVE SHELLS. 



3. Venus Jukesi, Desh. B.M. 

 V. testa orbiculato-inflata, subsphsericajinsequilaterali, cordiformi, 



alba, maculis angulatis subarticulatis triradiata, transversim 

 sulcata et tenue striata, antice posticeque divaricatim subno- 

 dosa, sulcis cicatriculis impressis notatis; lunula fusca, late 

 cordata, ligamento immerso; valvis intus albis; marginibus 

 tenue crenulatis ; sinu pallii brevi, angusto, trigono. 



Venus crebrisulca, Sow.jun. Tkes. Conch. p. 728. pl. 161. f. 187- 



189 (non Lamk.). 



Hab. Portus Essingtonensis (Jukes) ; Insula Luzon Philippi- 

 narum (Cuming). 



Ven. verrucosse affinis sed magis globulosa, lamellis destituta, 

 tuberculis brevioribus obsoletis. 



4. Venus sculpta. 



V. testa orbiculari, globosa, subsequilaterali, turgida, solida, 

 crassa, alba, transversim regulariter plicato-sulcata ; sulcis 

 antice posticeque attenuatis, granuloso-crenulatis, granulis an- 

 tice irregularibus, postice majoribus, in medio costis crenu- 

 latis ; umbonibus tumidis ; lunula cordiformi, paululum exca- 

 vata ; area angusta, elongato-lanceolata, uno latere fusca, car- 

 dine lato ; sinu pallii brevi, angusto, acuminato. 



Venus sculpta, Desh. Proc. Zool. Soc. 1853. 



Hab. ? Coll. Curaing. 



5. Venus effossa. 



V. testa orbiculari, globosa, subsphaerica, transversim undato- 

 sulcata et tenuissime striata, alba, sparsim rufo tenue macu- 

 lata, maculis plerisque trigonulis praecipue in latere postico ; 

 lunula subcirculari, profundissime impressa, fulva ; marginibus 

 tenuissime crenulatis. 



Venus efFossa, Phil Enum. Moll. Sicil. i. 43. no. 4. pl. 3. f. 20; 

 ii. 34. no. 4. 



Hab. Sicilia; Algeria. 



II. Testa lamellosa, lamellis simpUcibus. 



6. Venus casina. B.M. 



V, testa orbiculato-subcordata, insequilaterali ; sulcis transversis, 

 siu-sum recursis, acutis, marginibus parallelis, postice attenu- 



