146 Contributions to Indian Malacology. [No. 2, 



Unio spuria is said by Lamarck to be from Southern Asia. Mr. 

 Benson states (Ann. and Mag. Nat. Hist. 1862, X., 189,) that the 

 young of U. favidens approaches the figure given by Wood of Mya 

 spuria, which is, I suppose, the same species. It is not clear that 

 Lamarck's type was Indian. Mr. Benson also (1 c. p. 189) refers to 

 Mya radiata, Chem. as being from Malabar. Mya radiata, G-melin is 

 by Lamarck, Lea and Kiister, said to be American, and even in 

 Kuster I can find no allusion to Chemnitz's species. 



It is only right to acid too that some of what Woodward most 

 justly terms " the worthless fabrications of Rafinesque" (Man. Mol. 

 p. 136, note,) came from India. No scientific purpose can be served by 

 recalling the names from the oblivion in which they are happily buried. 



II. — Assam. 



No. 30. — Unio involutus, Benson. Assam. 



S. Hanley, Supp. to "Wood's lad. Test. 



I only know of this and the succeeding three species from reference 

 being made to them by Mr. Benson in the Ann. and Mag. Nat. Hist. 

 for 1862, 3rd Ser. X., 186. The work in which they were originally 

 described is not procurable in Calcutta. U. involutus is said to be 

 thin and tumid and to represent U. oUvarius, Lea, in Assam. 



No. 31.— Unio Corbis, Bens. Assam. 



S. Hanley, Supp. to Wood's Ind. Test. 



No. 32. —Unio Radula, Bens. Assam. 

 S. Hanley, Supp. to Wood's Ind. Test. 



No. 33. — Unio Scobina, Bens. 

 S. Hanley, Supp. to Wood's Ind. Test. 



U. fluctiger, Lea (teste Benson) Jour. Acad. Nat. Sci. Phil. 2nd Ser. IY. 250, 

 pi. 39, f. 130. 

 „ Kuster, Mart, and Chem., p. 237, pi. 80, fig. 1. 



Mr. Benson (in Ann. and Mag. Nat. Hist. 1862, X., 186) states 

 that U. fluctiger, Lea, is a synonym of U. Scobina. Krister's figure 

 of fluctiger differs from Lea's type, and the shell is stated to be from 

 S.America. As, however, Krister's specimen was from Dr. v. d.Busch's 

 cabinet, very little reliance can be placed upon the assigned locality, 

 especially as Lea, who did not know whence the shell came, sug- 

 gested that it was, possibly, South American. 



