304 Records of the Indian Museum. [VOER: Welle 
76e. Vat: consobrinus, Lea,—Lamellidens consobrinus, Lea, 
in Simpson’s Syn. Naiades, Proc. U.S. Nat. Mus , XXII, p. 856,= 
Unio consobrinus, Lea, Proc. Ac. Nat. Sci., Philad., III, 1859, 
p. 3313; Jl. Ac. Nat. Sci., Philad., 1860, p. 272, pl. xlv, fig. 152; 
Obs., VII, :860, p. 90, pl. xlv, fig. 152,—Margaron (Unio) con- 
sobrinus, Lea, Syu., 1870, p. 46,=Unio corbett, Deschamps, Bull. 
Soc. Zool. Fr., XVII, 1§92, p. 68, fig. 
Assam, Reg. No. #822; Poona, Reg. No. +955; Dacca, Reg. 
No: 2822) 
76/. Var. lamellatus, Lea,—Lamellidens lamellatus, Lea, in 
Simpson’s Syn. Naiades, Proc. U.S. Nat. Mus., XXII, p.856,—Umo 
lamellatus, Lea, Tr. Am. Phi'. Soc., VI, 1838, p. 19, pl vi, 
fie’ ro Obs. 1, 1838,p-1Os ply wi chee 16,=Margarita (Unio) 
lamellatus, Lea, Syn., 1836, p. 26; 1838, p. 20,=Margaron (Unio) 
lameliatus, ea, Syn., 1852, p. 29; 1870, p. 46,—=Umnto layardiz, 
Lea, Proc. Ac. Sci!, Philad., TIT, 1850, p. 153; Jl. Ac. Naty sem 
Philad., IV, 1860, p. 243, pl. xxxvi, fig. 22,—Margaron (Unio) 
layardit, ea, Syn., 1870, p. 46. | 
Upper Burma, Reg. No. 241+; Calcutta, Reg. No. #55, 
Mandalay, Reg. Nos. +721 and 2542; Pegu, Reg. No. 2539; Bhimo 
(J. Anderson), Reg. No. 2525 ; Matale, Ceylon, Reg. No. +989. 
After a careful examination of a long series of this shell the 
author is unable to consider it other than a mere variety of L. 
marginalts. 
76g. Var. scutum, Sowerby —=Lemellidens scutum, Sowerby, 
in Simpson’s Syn. Natades, Proc. US; Nato Mus. Oxy es 
Unio scutum, Sowerby, Conch. Icon., 1868, XVI, pl. xciv, fig. 
5:0; Hanley and Theobald, Conch. Ind. p. 22, pl. xlvi, fig. I. 
Tenasserim, Burma, Reg. No. +98; Rangoon (N. Annandale), 
Res. No, 2234. 
76h. Var. corrianus. Lea,—Lamellidens corrianus, Lea, in 
Simpson’s Syn. Naiades, Proc. U. 5. Nat. Mus., XXII, p. 857,—= 
Unio corrianus, Lea, Tr. Am. Phil. Soc., VI, 1834, p. 65, pl. ix, 
fig. 25; Obs., I, 1834, p. 177, pl. ix, fig. 25,—-Margarita (Umo) 
corrianus, Lea, Syn., 1836, p. 38; 1838, p. 25,—Margaron (Umo) 
corrianus, Lea, Syn., 1852, p. 38; 1870, p. 61. 
Sibsagar, Assam (S. E. Peel), Reg. No. #988; Calcutta, Reg. 
Nos. #884, #944, #897 and 4729; Pegu (W. T. Blanford), Reg. Nos. 
isss and 2580 ; Balagunge, Central Sylhet, Reg. No. +885; Burma, 
Reg. No. 2527; Zayleyman, Upper Burma (J. Anderson), Reg. 
No, 4522; Madras, Reg. No. 2999; Berhampur, Murshidabad 
District, Bengal (‘S. W. Kemp), Reg. No. 5955 ; Sambalpur, Reg. 
No. +222. 
761. Var. generosus, Gould,—Lamellidens generosus (Gould) 
in Simpson's Syn. Naiades, Proc. U.5. Nat. Mus., XXII, p. 857 = 
Unio generosus, Gould, Proc. Bost. Soc Nat. Hist., 1847, p. 220; 
Hanley and Theobald, Conch. Ind., p. 22, pl. xlvi, figs 4 —Uaue 
generosus var. angustior, Hanley and Theobald, Conch. Ind., 
