NO. 1205. SYNOPSIS OF THE NAIADES SIMPSON. 855 



* ? Vnio truncafua SPENGLER, Skriv. Selsk. Nat., Ill, 1793, p. 65. ? SCHROTER, 



Arch. Zoo}. Zoot. 1802, II, 2 Stiick, p. 107. 



*Unio marginalia LAMARCK, An. sans Vert., VI, 1819, p. 79.' *DESHAYES, Enc. 

 Me"th. II, 1827, p. 151, pi. CCXLVII, fig. 1.* HANLEY, Test. Moll., 1842, p. 206; 



* Biv. Shells, 1843, p. 206, pi. xx. fig. 53.* CATLOW and REEVE, Conch. from., 

 1845, p. 61. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491. * KUSTER, 

 Couch, Cab. Unio, 1861. p. 239, pi. LXXX, fig. 4. * SOWKRBY, Conch. Icon., 

 XVI, 1867, pi. LIX, fig. 297. * HANLEY and THEOBALD, Conch. Ind., 1876, p. 

 20, pi. XLIII, fig. 2.* P.ETEL, Conch. Sam., Ill, 1890, p. 158. 



* Margarita ( Unio) mart/walls LKA, Syn., 1836, p. 37; 1838, p. 24. 



* Margaron (Unio) marginalia LEA, Syn., 1852, p. 38; 1870, p. 60. 



*Unio anodontina LAMARCK, An. sans Vert., VI, 1819, p. 80. * DESHAYES, An. 



sans Vert., VI, 1835, p. 546; II, 1839, p. 671. 

 *Unio anodontinus KUSTER, Conch. Cab. Unio, 1861, p. 240, pi. LXXX, fig. 15. 



* P/ETEL, Conch. Sam., Ill, 1890, p. 144. 

 "^Symphynotabilineata'LEA, Tr. Am. Phil. Soc., IV, 1831, p. 98, pi. xi, fig. 19; 



* Obs., 1, 1834, p. 108, pi. xi, fig. 19. 



'Margarita (Unio) bilineatus LEA, Syn., 1836, p. 38; 1838, p. 25. 



* Unio bilineatus HANLEY, Test. Moll., 1842, p. 207; * Biv. Shells, 1843, p. 207, pi. 



xxi, fig. 30. * CATLOW and REEVE, Conch. Nom., 1845, p. 56. * H. and A. 

 ADAMS, Gen. Rec. Moll., II, 1857. p. 491. * SOWERBY, Conch. Icon., XVI, 

 1868, pi. LXXI, fig. 365. 



* Margaron ( Unio) bilineatits LEA, Syu., 1862, p. 38; 1870, p. 61. 

 *?7wio evanescens MOUSSON, Moll. Java, 1849, p. 91, pi. xvn, fig. 2. 



tLAMELLIDENS MARGINALIS var. OBESUS Hanley and Theobald. 



* Unio marginalia var. obeaa HANLEY and THEOBALD, Couch. Ind., 1876. p. 20, pi. 



XLIII, fig. 3. 



* ? Unio corrianus SOWERBY, Conch. Icon., XVI, 1868, pi. LXXVII, fig. 401. 



tLAMELLIDENS MARGINALIS var. TRICOLOR Kuster. 



* Unio tricolor KUSTER, Conch. Cab. Unio, 1856, p. 156, pi. XLV, fig. 1. * JICKELI, 



Faun. Moll. N. O. Af., 1874, p. 275.* PJETEL, Conch. Sam., Ill, 1890, p. 170. 



* Unio marginalia var. tricolor HANLEY and THEOBALD, Conch. Ind., 1876, p. 20, 



pi. xin, fig. 5. 



LAMELLIDENS MARGINALIS var. CANDAHARICUS Hanley and Theobald. 



* Unio marginalia var. candaharica HANLEY and THEOBALD, Conch. Ind., 1870, p. 



20, pi. XLIII, fig. 4. 



I LAMELLIDENS MARGINALIS var. CYLINDRICUS Hanley and Theobald. 



* Unio marginalia var. cylindrica HANLEY and THKOBALD, Conch. Ind., 1876, p. 



20, pi. XLIV, fig. 1. 



LAMELLIDENS MARGINALIS var. HANLEYI Simpson. 



* Unio marginalia var. corriana HANLEY and THEOBOLD, Conch. Ind., 1876, p. 



20, pi. XLIV, fig. 4. 2 



India; Burma; Pegu; Ceylon ; Canton River, China?. I believe that 

 Mousson's U. evanescens is L. marginalia, but cau it be from Java? 



1 1 use Lamarck's name for this species because the U. teatiidinariua and truncatua 

 were ouly briefly and imperfectly described, and never figured, their habitats being 

 given as Greenland. Lamarck refers to the figures in Enc. M<5th., pi. 247, figs. 1, 

 la, Ib, Ic, which very accurately represent the shell we know as Unio marginalia. 



2 Not Lea's corrianua at all, but very different. I change the name to hanleyi. 



