Zoological Society. 433 



Venus Chemnitzii. Ven. testd rhombeo-cordatd, crassd, ventri- 

 cosd, valde inccquilaterali, albidd, hrunneo suhradiatim maculatd et 

 strigatd, radiatim costellatd, concentrice lamelliferd; lamellis nu- 

 merosis, hrevissimis , undique crispis ; costellis angustis confertis- 

 simis ; margine ventrali corivexo intusque crenulato ; dorsali pos- 

 tico subrecto et minime declivi ; latere postico superne angulato ; 

 antico brevi, attenuato, rotundato ; lunula fused, cordatd ; liga- 

 mento angusto, infosso ; superficie interna albidd, immaculatd. 

 Index Test. Sup. t. 16. f. 20. Long. 1-75 ; lat. 2-50 poll. 

 Hab. San. Nicholas, Philippines (Cuming). Mus. Cuming, Hanley. 

 This beautiful species bears a strong resemblance to the shell de- 

 lineated in the sixth volume of the ' Conchylien Cabinet/ fig. 384, 

 which is commonly quoted for the reticulata of Linnaeus equally with 

 the two preceding figures ; although Chemnitz, without separating it 

 from that species, specifies the absence of the orange tinge upon the 

 teeth, the peculiar characteristic of that well-known shell. There is 

 a slight shade of orange beneath the umbones internally, and the 

 teeth are similar to those oi puerpera. 



Venus lacerata. Ven. testd V. puerperse affini, minus autem ven- 

 tricosd et margine ventrali posticoque magis arcuatis ; margine 

 ligamentali subrecto et minime declivi; lamellis concentricis con- 

 fertioribus, et postice asperrimis ; superficie externd albidd, lineis 

 ferrugineis aut brunneis angulatim strigatd ; extremitate posticd 

 intus extusque immaculatd. 

 Index Test. Sup. t. 16. f. 23. Long. 2-50 ; lat. 2*50 poll. 

 Hab. Moluccas ? Mus. Hanley. 



The fringed lamellae become so crowded at the hinder extremity 

 of this rare and beautiful shell as to form a kind of raised reticulation. 

 It is a much rounder species than the V. Listeri, to which it also 

 bears a considerable resemblance. 



Venus scabra. Ven. testd ovato-cordatd, inaquilaterali, subven- 

 tricosd, pallide brunned, radiatim costellatd ; costellis confertis et 

 concentrice squamiferis ; margine ventrali valde arcuato ; dorsali 

 utrinque convexiusculo et antice brevi; natibus acutis et antic^ 

 incumbentibus ; lunuld subinconspicud ; pube haud excavatd ; super- 

 ficie internd, lividd et postice saturatius tinctd ; margine interno 

 crenato. 

 Index Test. Sup. 1. 16. f. 24. Long. 0*50 ; lat. 0-70 poll. 

 Hab. Catbalonga, Philippines. Mus. Cuming, Hanley. 

 A rare species, which is somewhat allied to decorata and ovata, 

 but distinguishable from either by the greater convexity of its lower 

 margin. The radiating ribs are peculiarly strong upon the umbones, 

 from whence they separate into two or three smaller ones, which 

 become more densely armed with the concentric rows of scales as 

 they apj)roach the lower margin. 



Venus robouata. Ven. testd cordato-trigond, solidd, valide in- 

 aquilaterali, magis minusve ventricosd, albidd {intus purpureo 

 postice infectd), concentrice cingulatd ; cingulis multis, Itsvibus, 

 obtusis ; interstitiis laevibus ; margine ventrali arcuato (intus leviter 



