707 



reflexis crassis antico et medio acute noduliferis postice sublami- 

 natis laqueatis decussata; latere postico suboblique truncato; 

 margine dorsali subelevato, rectiusculo ; latere antico brevi ; lu- 

 nula impressa ; cardine dentibus aurantiis. 



One peculiarity of this species is the deep orange-colour of the 

 teeth ; another, the thick angular nodules formed on the concen- 

 tric ridges at the points of decussation. 



Philippines, Cuming. Madagascar. 



11. Venus monilifera (pi. cliii. f. 19), Sowerhy, jun. 



V. testa subcompressa, subquadrata, fulva, fusco-rubescente 

 radiatim maculate et postice angulatim sublineata, costellis moni- 

 liferis radiantibus et costellis concentricis crassiusculis crenulatis 

 decussata; margine dorsali elevato, rectiusculo; latere antico 

 breviusculo, subquadrato, medio depresso ; latere postico truncato, 

 subangulato ; cardine dentibus aurantiis. 



Notwithstanding the orange teeth, this shell differs so<much in 

 its compressed, square shape, and in the beaded elevation of the 

 radiating ridges resulting from the comparative depression of the 

 concentric ones from V. reticulata, that I think the distinctness 

 of this species will be readily admitted. The largest of the three 

 specimens is from the collection of Mr. Gubba. 



Puerto Galero, island of Mindoro, Philippines. Cuming. 



12. Venus PYGMiEA (pi. clvi. f. 69-72), Lamarck, Anim. 

 sans vert. Venus, no. 3. 



V. testa, parva, compressa, ovali, costellis radiatis et laminis 

 crenulatis concentricis cancellata, alba, fusco sparsim variegata 

 vel rubro radiata ; margine dorsali, excavato, nigro-lineato, valvae 

 d extra laminato, valvse sinistra? planulato ; lunula impressa. 



A small species, presenting a miniature resemblance to V. re- 

 ticulata, but longer and flatter in proportion. The area of the 

 hinge is wide, hollow, and in one valve smooth. Two specimens 

 from the Philippines have a few brown spots on a white surface, 

 and another, worn, has broad rays of red ; in all, the hinge-area 

 is marked with strong transverse black lines. 



Honduras Bay. 



13. Venus Lamarckii (pi. cliii. f. 20, 21), Gray, in Brit. 

 Mus. V. subrostrata, Reeve, t. 68. f. 4. V. cancellata, CJiemn. 

 f. 306. 



V. testa ovali-subtrigona, ventricosa, alba, fusco obscure trira- 



