416 Notes on Species of the Family Corbiculadm. 



The shell is small, transversely-oval, inequilateral, and some- 

 what convex. The margins are rounded. The epidermis is 

 yellowish-green and polished, and has markings of dark violet 

 on the beaks. The stria?, are regular and distant. The beaks 

 are small and somewhat raised, and they curve inwardly at the 

 apex. The hinge is slight. The lunula is distinct, and of a 

 lighter color than the rest of the shell. 



Somewhat like Corb. tumida from Borneo, but smaller, less 

 heavy, more inequilateral, and less convex; the stride are 

 closer, and the epidermis is lighter, and more highly polished. 



This species, named in honor of the Abbe Larnaudier, who 

 formed part of the mission sent to Si-am some years since by 

 the French, was discovered by that gentleman. The only 

 specimens collected are in my cabinet ; they were received 

 through the late Chevalier Bernardi of Paris. 



The following species will be figured at some future time. 



49. Corbictila Morcletiana, nov. sp. 



C. testa trigona, triangulari, tumidula ; epidermide viridi fusces- 

 cente vestita ; umbonibus elevatis ; valvis intus violaceis ; lunula 

 lata, distincta. 



Long. 29 ; lat. 31 ; diarn. 21 mill. 



Hah. — Cambodia. 



Named in honor of Monsieur Morelet of Dijon, France, to 

 whom I am indebted for this interesting species. 



50. Corbicula coloiiialis, nov. spec. 



C. testa subtrigona, inaequilaterali ; latere postico longiore ; epi- 

 dermide viridi flavescente vestita ; regulariter striata, imibonibus 

 tumidis ; valvis intus candidis, ad dentes laterales violaceis. 



Long. 23 ; lat. 21 ; diam. 16 mill. 



Hob. — Java. 



