BIVALVE SHELLS. 197 



latis ; dentibus obliquis, inflexis, insequalibus ; sinu pallii pro- 

 fundo, triangulari, linea inferiore longiore. 



Hab. Terra Diemenensis. 



19. Venerupis monstrosa. 



V. testa ovato-transversa, subsequilaterali, tumida, inaequivalvi, 

 albo-grisea, intus flava, violaceo maculata, transversim densis- 

 sime striato-lamellosa, striis longitudinalibus crispata ; valva 

 dextra, sinistram superante tara ad cardinem quam postice. 



Venus monstrosa, Chemn. Conch. vii. 50. pl. 42. f. 445, 446. 



Gmel p. 3280. no. 53. 



Dillw. Cat.i. 208. no. 113. 



Wood,Ind. Tes^. pl. 8. f. 112. 

 Venus no. 50, Schrot. Einl. iii. 173, 



Corbula, Brug. Encycl. Meth. pl. 230. f. 2 (copiee de Chemnitz). 

 Venerupis monstrosa, Gray, Ann. Phil. p. 25. 



Hanley, Descr. Cat. p. 55. 



Hab. Insulae Nicobaricse ; insulae Philippinenses. 



Genus 15. CLEMENTIA. 



Animal ovatum,crassum; pallium tenue,infra liberum, simplex; 

 trachese longae, cylindraceae, conjunctae ; pes quadratus. Dosinise 

 affinis ? 



Testa ovato-transversa, subtrigona, aequivalvis, inaequilateralis, 

 candida, tenuis. Cardo dentibus in valva sinistra uno erecto an- 

 tico, duobus obliquis lamiuatis posticis ; in valva dextra duobus 

 erectis anticis, uno bifido laminato postico ; impressiones muscu- 

 lares duse, distantes, subcirculares ; impressio pallii postice late 

 profundeque sinuosa; sinus subtriangularis, ad umbones fere 

 perpendiculariter ascendens. 



Mactra? sp., Chemn. (1795) Conch. Cab. ii. 219. 

 Venus, Gray (1828) in Wood, Ind. Test. Suppl. pl. 2. f. 8. 

 Clementia, ^Gray (1840), Syn. B. Mus. ; Proc. Zool. Soc. 1847, 

 p. 184. 



1. Clementia papyracea. B.M. 



C. testa oblongo-ovata, tenuissima, transversim undulata, prae- 

 sertim versus apices, lactea ; margine dorsali postico rectihneo ; 

 extremitate utraque rotundata, postica anticam bis aequante ; 

 lunula cordato-lanceolata, plana, areaque lanceolata, impressis, 

 haud circurascriptis ; cardine utrinque tridentato; fovea tri- 

 angulari, margini parallela in utraque valva, sub lunula. 



