602 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



fOBOVARIA ELLIPSIS Lea. 



*" "iUnio hrevialis Sowerby, Rec. and Foss. Shells, XVI, fig. (no date). 



^ Unio ellipsis Lea, Tr. Am. Phil. Soc, III, 1828, p. 268, pi. iv, fig. 4; * Oba., 1, 1834^ 

 p. 10, pi. IV, fig. 4. — Short and Eaton, Transylvania Jl., 1831, p. 75. — * Say, 

 Am. Conch. I, No. II, 1831. — * Deshayes, An. sans Vert., 2d ed., VI, 1835, p. 

 547 ; 3d ed., II, 1839, p. 672.—* Hanley, Test. Moll., 1842, p. 188 ; * Biv. Shells, 

 1843, p. 188, pi. XXI, fig. 7.— *PoTiEZ and Michaud, Gall. Moll., 1844, p. 150, 

 pi. LViii, figs. 1, 2. — *Catlow and Reeve, Conch. Nom., 1845, p. 58. — 



* Chenu, Bib. Conch., 1st ser., Ill, 1845, p. 22, pi. iv, figs. 1, la, 1&. — * Kuster, 

 Conch. Cab. Unio, 1852, p. 43, pi. viii, fig. 4.—* Chenu, 111. Conch., 1858, pi. 

 xviii, figs. 1, la, 1&.— * H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 495. — 



* Sowerby, Conch. Icon., XVI, 1868, pi. lxxx, figs. 4, 24.— "Calkins, Pr, 

 Ottawa Acad. Sci., 1874, p. 42.^*Latchford, Tr. Ottawa Field Nat. Club, 

 1882, p. 50.— *B. H. Wright, Check List, 1888.— 'P^etel, Conch. Sam., Ill, 

 1890, p. 151. 



* Margarita ( Unio) ellipsis Lea, Syn., 1836, p. 22; 1838, p. 18. 



* Margaron ( Unio) ellipsis Lea, Syn., 1852, p. 26; 1870, p. 41. 



* Unio triangularis Say, Am. Conch., VI, 1834. 



* Unio olivariiis Conrad, New F. W. Shells, 1834, p. 70. — * Ferussac, Guer. Mag., 



1835, p. 28. 



* Unio taitianus Sowerby, Conch. Icon., XVI, 1868, pi. lxvii, fig. 338. 



* Uniopealei Lea, Pr. Ac. N. Sci. Phila., 1, 1871, p. 191; *J1. Ac. N. Sci. Phila., VIII, 



1874, p. 26, pi. VIII, fig. 23; *Obs., XIII, 1874, p. 30, pi. viii, fig.23.— *B. H. 

 Wright, Check List, 1888. 



Upper Mississippi system as far south as the Tennessee and Arkansas 

 rivers; St. Lawrence drainage area. 



fOBOVARIA CASTANEA Lea. 



*Unio castaneus Lea, Tr. Am. Phil. Soc, IV, 1831, p. 91, pi. xi, fig. 21 ;i *Obs., I, 

 1834, p. 101, pi. XI, fig. 21.— * Conrad, New F. W. Shells, 1834, p. 68.— 



* Ferussac, Guer. Mag., 1835, p. 28.—* Hanley, Test. Moll., 1842, p. 188 ; Biv. 

 Shells, 1843, p. 188, pi. xxii, fig. 30.— *Catlow and Reeve, Conch. Nom., 

 1845, p. 57.— * Conrad, Pr. Ac. N. Sci. Phila., VI, 1853, p. 246.— *H. and A. 

 Adams, Gen. Rec. Moll., II, 1857, p. 495.— * Chenu, 111. Conch., 1858, pi. xi, 

 figs. 5, 5a, 5&.— *B. H. Wright, Check List, 1888.— * P^etel, Conch. Sam., Ill, 

 1890, p. 147. 



^Margarita {Unio) castaneus Lea, Syn., 1836, p. 22; 1838, p. 18. 



* Margaron {Unio) castaneus Lf.a, Syn,, 1852, p. 26; 1870, p. 41. 



Streams flowing into the Gulf of Mexico, from the Alabama Eiver 

 west to the Nechez. 

 The following species are unflgured and indeterminable. 



* Ofcorana coj-^ate Rafinesque, Ann. Gen. Sci. Brux., V, 1820, p. 312, j)l. lxxxii, 



figs. 6, 7. ^ 



*Ol}ovaria stegaria Rafinesque, Ann. Gen. Sci. Brux., V, 1820, p. 312, pi. lxxxii, 



figs. 4, 5. 



' The name castaneus was applied to some Unio which I am unable to determine, 

 by Rafinesque in a continuation of a monograph on the Bivalve Shells of the River 

 Ohio, etc., in October, 1831. According to Scudder, Lea's name was published the 

 latter part of the same year, but I have no means of knowing which appeared first. 

 Under the circumstances I use Lea's name. 



