546 PitorEKnixnf! or TTTE NATIONAL 



part. 1 * GOULD, Inv. of Mass., 1841, p. 109, iig. 71. *INNEY, Gould's Inv., 

 1870, p. 169, fig. 473.- *HANLEY, Test. Moll., 1842, p. 206.* DK KAY, Zool. of 

 N. Y., Pt. 5, 1843, p. 191, pi. xx, fig. 239.* HANLEY, Biv. Shells, 1843, p. 206. 

 CATLOW and REEVE, Conch. Nom., 1845. p. 61. * CONRAD, Pr. Ac. N. Sci. 

 Phila.,VI, 1853, p. 252.* H. and A. ADAMS, Gen. Kcc. Moll., II, 1857, p. 491. 



* KUSTER, Conch. Cab. Unio, 1861, p. 223, pi. LXXV, fig. 4. * REEVE, Conch. 

 Icon.. XVI, 1865, pi. xxi, fig.94. *HARTMAN and MICHENER, Conch. Cest., 

 1874, p. 70, fig. 186. *B. H. WRIGHT, Check List, 1888. *H. CAKPEXTKR. 

 Nant., Ill, 1889, p. 94.* P.ETEL, Couch. Sam., Ill, 1890, p. 160. 



* Margarita ( Unio) nasiitus LEA, Syu., 1836, p. 37 ; 1838, p. 24. 

 *Margaron ( Unio) nasutns LEA, Syn., 1852, p. 37; 1870, p. 60. 



*Unio nasuta LAMARCK, An. aans Vert., VI, 1819, p. 75. *DESHAYES, An. sans 

 Vert., 2d ed., VI. 1835, p. 538; 3d ed., II, 1839, p. 669. HANLKY. Test. Moll., 

 1842, p. 208 ; * Bi v. Shells, 1843, p. 208. 



*Myanasnta EATON, Zool. Text-Book, 1826, p. 218. * WOOD. Indox Test.(Hanley), 

 1856, p. 199, pi. i, Supp., fig. 4. 



* Kurynea nasula AGASSIZ, Shells of New ttng., 1851, p. 13; Arch, fiir Natnrg., I, 



1852, p. 45. 

 11 Unio rostrata VALENCIENNES, Rec. Obs. Zool., II, 1833, p. 233, pi. LIII, fig. 3. 



* Fnio vanglianianus SOWERHY, Conch. Icon., XVI, 1868, pi. LXI, fig. 308. 



St. Lawrence drainage; streams flowing into the Atlantic south to 

 North Carolina. 



(Group of LampsiUa aubrostratus.) 



Shell elliptical to elongate, distinctly pointed behind, the point well 

 above the middle of the height, that of the female conspicuously 

 swollen at the posterior base and obliquely truncated behind; epider- 

 mis varying from olive to brown, generally more or less rayed and 

 slightly roughened; beaks not prominent, sculptured with fine, deli- 

 cate, parallel bars, which are somewhat looped in front and generally 

 descend obliquely behind ; pseudocardinals usually compressed ; nacre 

 bluish to purple. Animal with inner gills often more or less free from the 

 abdominal sac ; posterior base of mantle of female generally toothed. 



fLAMPSILIS SUBROSTRATUS Say. 



Fnio subrostratus SAY, N. Harmony Diss., Jan. 15, 1831; *Aiu. Conch., VI, 1834. 



* CONRAD, New F. W. Shells, 1834, p. 72. *FERUSSAC, Guer. Mag., 1835, p. 

 26. *L. W. SAY, Terr, and Fluv, Shells, 1840, p. 7.* CONRAD, Pr. Ac. N. 

 Sci. Phila., VI, 1853, p. 258. KUSTER, Conch. Cab., 1861, p. 203, pi. LXVIII. 



* LEWIS, Pr. Ac. N. Sci. Phila., VIII, 1878, p. 273. * CALL, Am. Nat., XIII, p. 

 392. *B. H. WRIGHT, Check List, 1888. *P.KTEL, Conch., Sam., Ill, 1890, 

 p. 168. 



* Unio nashrillianus LEA, Tr. Am. Phil. Soc., V, 1834, p. 100, pi. xiv, fig. 43; 



Obs., I, 1834, p. 212, pi. xiv, fig. 43. *FERUSSAC, Guer. Mag., 1835, p. 29. 

 *HANLEY, Test. Moll., 1842, p. 193; Biv. Shells, 1843, p. 193, pi. xxm, fig. 31. 



* CATLOW and REEVE, Conch. Nom., 1845, p. 6L * CONRAD, Pr. Ac. N. Sci. 

 Phila., VI, 1853, p. 252. * KUSTER, Conch. Cab. Unio, 1861, p. 224, pi. LXXVI, 

 figs. 1, 2. SOWERBY, Conch. Icon., XVI, 1866, pi. xxx, tig. 158. *H. and A. 

 ADAMS, Gen. Rec. Moll.. II, 1857, p. 494. * B. H. WRIGHT, Check List, 

 1888. * PJETEL, Conch. Sam., Ill, 1890, p. 160. ' 



1 Conrad gives three figures under fig. 1. The first and second are r.Jixhcrianu*; the 

 third is a female nasutus. 



