BIVALVE SHELLS. 1*^7 



latis ; (lentibus obliquis, inflexis, inaequalibus ; sinu pallii pro- 

 fundo, triangulari, linea inferiore longiore. 



Hab. Terra Diemenensis. 



19. Venerupis monstrosa. 



V. testa ovato-transversa, subsequilaterali, tiimida, injequivalvi, 

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

 sime striato-lamellosa, striis longitudinalibus crispata ; valva 

 dextra, sinistram superaute tam ad cardinem quam postice. 



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



Gmel. p. 3280. no. 53. 



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



Wood, Ind. Test. pi. 8. f. 112. 

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



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

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



Hanley, Descr. Cat. p. 55. 



Hab. Insulse Nicobaricse ; insulae Philippinenses. 



Genus 16. clementia. 



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

 tracheae longae, cylindraceae, conjunctse ; pes quackatus. Dosiniae 

 affinis ? 



Testa ovato-transversa, subtrigona, sequivalvis, insequilateralis, 

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

 tieo, duobus obliquis laminatis 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. pi. 2. f. 8. 

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

 p. 184. 



1. Clementia papyracea. B.M. 



C. testa oblongo-ovata, tenuissima, transversim undulata, pra;- 

 seitim versus apices, lactea ; margine dorsali postico rectilineo ; 

 extremitate utraque rotundata, postica anticam bis ajquante ; 

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

 hand circumscriptis ; cardine utrinque tridentato ; fovea tri- 

 angulari, margini parallela in utraque valva, sub lunula. 



