132 BURMA, ITS PEOPLE AND PRODUCTIOXS. 



*CARDnrM ELOXOATUM, Lam. 



* ,, rArYUACKUM, Cliim. 



* ,, LATUM, Gmcl. 



* ,, ArKitTiM, Chom. 



* ,, MULTISTItlATra, SoW. 



,, maculoaum, lleevc. 

 (Ctenocaedia) iiYSTKix, Egcvc. Aiulamans. 



,, ArsTUALE, Sow. Anduiuans. 



Hemicaedia orientalis. Andamans. 



(Lunulicaedia) retusa, L. 



Family Ledidae. 



Foot compressed, deeply grooved, forming when expanded an oval disk with 

 crenate edges. Siphons long, slender and completely retractile. Shell thin, pearly. 



*Leda Nicobabjca, Chcm. 



Family Lucinidae. 



Foot cylindrical, hollow, opening into the visceral cavity. Muscular sears very 

 large, rough and elongated. 



*LTJCi]!fA, sp. (near eottixbata). 



* ,, sp. (near seeicata). 



* ,, sp. indet. 



* ,, sp. indet. 



*LoEiPES PniLirpixAEUM, Hanley. 



* ,, PHELirpiANA, llceve. 



CoEBis FIHBEIATA, L. Audauians. 



Family Cyrenidse. 



Siphons sliort. Shell orbicular, closed, covered with a brittle cpidenuis. Car- 

 dinal teeth two or three, lateral teeth compressed. Ligament external. 

 Cyeena, Lamarck. 



Shell inequilateral, beaks eroded, lateral teeth smooth. Inhabits salt or brackish 

 water. 



* ,, Eengalensis, Sow. 



The species of Cyrena are found in mangrove swamps and estuaries. In Lurma 

 they are frequently tenanted by a. small globular crustacean, about the size of a pea, 

 always found living in pairs, parasitically inside the valves, without any apparent 

 inconvenience to its host. 



CoRBicuLA, Megerle von Muhlfeldt. 



Hinge, with three cardinal teeth in each valve. Lateral teeth striated. 

 Ligament prominent. Beaks sometimes eroded. Inhabits fresh water. 



The rivers of India and Burma contain several species of Corhicula, but there 

 is no doubt that the number of species of this genus have been unduly multiplied. 

 All here enumerated arc strictly river forms. 



,, GEACiLis, Prime. Tenasserim R. 



,, arata, B. 



,, PisDM, W. Blanford. Ava. 



,, Lamarckiana, Prime. Mandalay. Monieiu. 



,, YtTNANENsis, G. Nevill. Mauwyuc in Yunnn. 



., Andeesoniana, G. Ne\'ill. Momein in Yunan. 



Batissa inflata. Prime. The Nicobars. 



SPU.BEIUM AvANu.M, Tlicob. Ava. 



