NO. 1205. SYNOPSIS OF TBE N^AIADES—STMPSOK 817 



tNODULARIA OLIVARIALea. 



* Unto olivarius Lea, Tr. Am. PMl. Soc, IV, 1831, p. 108, pi. xvi, fig. 38; *Obs., 



I, 1834, p. 118, pi. XVI, fig. 38.— ^Hanley, Test. Moll., 1842, p. 195; * Biv. 

 Shells, 1843, p. 195, pi. xxii, fig. 32.—^ H. and A. Adams, Gen. Kec. Moll., II, 

 1857, p. 494.— *Chenu, 111. Conch., 1858, pi. viii, figs. 11, 11a, 11?).— *Kuster, 

 Conch. Cab. Unio, 1861, p. 244, pi. lxxxii, fig. 2. — *Sowerby, Conch. Icon.; 

 XVI, 1866, pi. XXXVI, fig. 195.—* Hanley and Theobald, Conch. Ind., 1876, 

 p. 5, pi. X, fig. 1.— P.ETEL, Conch. Sam., Ill, 1890, p. 161. 



* Margarita ( Uino) olivarius Lea, Syn., 1836, p. 26 ; 1838, p. 20 ; 1852, p. 30; 1870, p. 47. 



* Unio pumilio Kustek. Conch. Cah. Unio, 1862, p. 268, pi. xo, tig. 7. 



India. 



tNODULARIA NUTTALLIANA Lea. 



"" Unio nuUaUianus Lka, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 103; * Obs., VI, 1857 

 p. 30, pi. XXX, fig. 25; Jl. Ac. N. Sci. Phila., Ill, 18-58, p. 310, pL xxx, fig. 

 25. — *Hanley and Theobald, Conch. Ind., 1876, p. 19, pi. XLI, figs. 5, 6. — 



* P.ETEL, Couch. Sam., Ill, 1890, p, 161. 



* Margaron {Unio) nuttallianxs Lea, Syn., 1870, p. 74. 



India. 



NODULARIA INVOLUTA Benson. 



*Unio involuius Benson, Hanley Biv. Shells, 1856, p. 385, pi. xxiii, fig. 19. — 



* Hanley and Theobald, Conch. Ind., 1876, p. 19, pi. xli, fig. 2. — '"P.etel, 

 Conch. Sam., Ill, 1890, p. 156. 



* Margaron ( Unio) involutus Lea, Syn., 1870, p. 37. 



*Unio involuta Sowerby, Conch. Icon., XVI, 1866, pi. xxxiv, fig. 177. 



Assam. 



Group of JSfodiilaria contradens.) 



Shell inflated, obovate, rhomboid, with a slight swelling at the post 

 base, and a well- developed posterior ridge; beaks full and high, the 

 sculpture consisting of wavy, zigzag ridges which often extend over 

 the shell as somewhat nodulous corrugations ; pseudocardinals obliquely 

 or vertically striate ; laterals curved, cavity of the beaks rather shallow. 



tNODULARIA CONTRADENS Lea. 



* Unio contradens Lea, Tr. Am. Phil. Soc, VI, 1838, j). 75, pi. xviii, fig. 58 ; * Obs., II, 



1838, p. 75, pi. xviii, fig. 58.— *Troschel, Arch. fiirNat.,V, 1839, Pt.2, p. 237.— 

 ^Hanley, Test. Moll., 1842, p. 209; Biv. Shells, 1843, p. 209, pi. xxii, fig. 8.— 



* Catlow and Reeve, Couch. Nom., 1845, p. 57. — * H. and A. Adams, Gen. Eec. 

 Moll , II, 1857, p. 492.— "Chenu, 111. Conch., 1858, pi. xxix, figs. 4, 4a, 45.— 



* Reeve, Conch. Icon., XVI, 1865, pi. xxix, fig. 149. — * PiETEL, Conch. Sam., 

 Ill, 1890, p. 148. 



* Margarita ( Unio) contradens Lea, Syn., 1838, p. 25. 



* Margaron ( Unio) contradens Lea, Syn., 1852, p. 39; 1870, p. 46. 



* + Uniojavanns Lea, Pr. Am. Phil. Soc, I, 1840, p. 285; * Tr. Am. Phil. Soc , VIII, 



1842,p.220, pl.xviii, fig. 37; *Obs., Ill, 1842, p. 58, pi. xviii, fig. 36.— *H. and 

 A. Adams, Geo. Rec Moll., II, 1857, p. 494.— '^ Chenu, 111. Conch., 1858, pL 

 xxviii, figs. 4, 4a, ih. — ^ Kuster, Conch. Cab. Unio, 1856, p. 138, pi. xli, fig. 3; 

 1861, p. 236, pL Lxxix, figs. 4, 6.—* Sowerby, Conch. Icon., XVI, 1868, pi. xc, 

 fig. 489.—* PiETEL, Conch. Sam., Ill, 1890, p. 155. 



Proc. ]Sr. M. vol. xxii 52 



