348 ON THE SHELLS OF PERA.K. [June 2, 



Var. PERAKENSis, de Morgan. 



Sermyla perake.nsis, de Morgan, Bull. p. 7Z, t. iv. fig. \A-=Melania 

 ivfracostata, Reeve, Conch. Ic. fig. 14 {non Mouss.), teste de 

 Morgan. 



Kinta valley {de Morgan). 



'' Sermyla " chaperi, de Morgan, 1. c. p. 72 (unfigured), is hardly 

 more than a slight variation of M. episcopalis. The brown bands 

 occur also in the type, and the second series of nodules in several 

 varieties, e.g. var. menkeana, Lea, to which de Morgan's alleged new 

 species belongs. 



Fam. Unionid^. 



94. A.NODONTA cuMiNGii, Lea. 



Kinta valley {de Morgan). Malacca, Java, Borneo, Siam, Cam- 

 bodia. 



95. Anodonta chaferi, de Morgan. 



Anodonta chapr-r, de Morgan, Bull. p. 75, t. v. figs. 1, 2. 

 Kinta valley {de Morgan). 



96. Unio PERAKENSIS, de Morgan. 



JJnio perakensis, de Morgan, Bull, p, 7^, t. v. figs. 3, 4. 

 Kinta valley {de Morgan). 



Fam. Cyrenid^. 



97. CORBICULA MALACCENSIS, Dcsll. 



Kinta valley {de Morgan). Malacca {Beshays). 



EXPLANATION OF PLATE XXX. 



Figs. 1,1a. Ennca {3Iicrostroph/a) perakensis, p. 331. 



2, 2 a. ( ) himgerfordiana, p. 331. 



3. • ( ) snhci/Iindrica, p. 331. 



4-4 h. Lamprocysiis malayana, p. 333. 

 5-5 b. coimlina, p. 333. 



6, 6 a. Chhritis malayana, p. 335. 



7, 7 a. Hypselosfoma himgcrfordiamnn, p. 337. 

 8-8 b. AlyccBUS diplochilus, p. 342. 



9 9 6. oligopleitris, p. 342. 



10-10 b. microdiscus, p. 343. 



11-11 b. parvuhis, p. 343. 



12-12 b. microcomis. p. 343. 



13. Biplommatina {Slnica) canaliculafa, p. 343. 



14. ■ ( ) ventrictdus, p. 343. 



15. ( ) dimimita, p. 344. 



