1gI2.] H. B. Preston: The Asiatic Natades. 301 
68a. Var. triembolus (Benson), Simpson, Syn. Naiades, 
Proc. U.S. Nat. Mus., XXIT, p. 844,=Unzto triembolus, Benson, 
Jl. As. Soc. Beng., XXXV, 1855, p. 144; Ann. Mag. Nat. Hist., 
xX, 1862, p. 190; Hanley and Theobald, Conch: Ind., p. 43, pl. 
evii, fig. 2,—=Unio houngdaranicus, Tapparone-Canefri, Ann. Mus. 
Civ. Genova, VII, 1889. p. 341. 
Cachar, Reg. No. 2455; Barrack River, Silchar, Reg. No. 
ss66° Toc? (Asiatic Society of Bengal), Reg. No. 2#38; Cal- 
cutta, Reg. No. 2481. 
69. Parreysia rajahensis (Lea), Simpson, Syn. Naiades, Proc. 
U.S. Nat. Mus., XXII, p. 844,=Unio rajahensis, Lea, Proc. Am. 
Bite ooc.; Dh ga84r, p. 30. Tr. Am. Phil. Soc. Villiage p..2389. 
Persil ne: 530 -Obs. 1 1832, p. 77; pl. xxii ees —— 
222; Hanley and Theobald, Conch. Ind., p. 43, pl. evii, fig. 1,= 
Margaron (Unto) indicus, Lea, Syn., 1870, p. 31. 
Nerbudda River, Reg. No. 2472; Poona, Reg. No. 1512 5 
Nerbudda R. (W. Theobald), Reg. No. +712; Nerbudda R., Reg. 
No. 2518, (W. T. Blanford); ‘‘from the soil of the Ran Kach,” 
Reg No. 2052 from 120 miles S. W. of Sepree, Reg: No. s13s); 
Sahibgunge, Reg. No. 2471. 
70. Parreysia corbis (Hanley), Simpson, Syn. Naiades, Proc. 
We Nate Mus: XOX ip. 845,-—U 16: corbis, Benson ins Hanley’s 
Rec. Biv. Shells, 1856, pl. xxiii, fig. 43; Hanley and Theobald, 
Couch ind: p. 22, pl xlv, fis. 10,—Margaron- (Usio) corbis, 
ea, Syl. 1870, p. 59. 
Assam, Reg. No. 5228. 
71. Parreysia burmanus (Blanford), Simpson, Syn. Natades, 
Proc. U.S. Nat. Mus., XXII, p. 845,=Unio burmanus, Blanford, 
Proc. Zool. Soc , London, 1869, p. 450,—Unto birmanus, Hanley 
and Theobald, Conch. Ind., p. 19. pl. xlii, fig. rr. 
Bhamoswes. Nos: 5252 [Type], 25*8) 2565) ssa0 (J. Ander 
son), #799, 
72. Parreysia sikkimensis (Lea), Simpson, Svn. Naiades, 
Proc. U. S. Nat. Mus., XXII, p. 845,—=Umo sikkimensis, Wea, 
Broce, Ac) Natesct Piiad. Lil 1850" p. it > Jl. Acad. Nat Sei: 
Ie 1650, bs 25. Ons. VIE, 7800, p. 60, pl. xxxix, isin 
Margaron (Umo) sikkimensis, ea, Syn., 1870, p. 64. 
Sikkim, Reg. No. 2422; Sibsagar, Assam, Reg. Nos. 2508 
and 4715 (S. E. Peal.) ; Siliguri, Reg. No. 192; Namtsik, Dihing, 
Reg. No. 2070; Cachar, Reg. No. 2422. 
73. Parreysia gowhattensis (Theobald), Simpson, Syn. 
Naiades, Proc. U.S. Nat. Mus., XXII, p. 845,—Untio gowhattensis, 
Theobald, Ji. As: Soc. Beng., XLII, 1873, Pt: 2,.p. 2084. pluexvil, 
fig. 4. 
Gowhatty (=Gauhati), Assam (Museum Collector), Reg. No. 
716 - Gowhatty, Reg. Nos. 2475 and 2558, 
1 1 
