562 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



fLAMPSILIS VESICULARIS Lea.i 



*Unio vesicularis Lka, Pr. Ac. N. Sci. Pliila., II, 1872, p. 156; *J1. Ac. N. Sci. 

 Phila., VIII, 1874, p. 37, pi. xii, fig. 34; *0b8., XIII, 1874, p. 41, pi. xii, fig. 

 34.—* B. H. Wright, Check List, 1888.—* Simpson, Pr. U. S. Nat. Mus., XV, 

 1892, p. 42.5, pi. Lxvii, fig. 4. 



Florida; Flint liiver, Georgia? 



tLAMPSILIS VILLOSUS B. H. Wright. 



"Unio villoms B. H. Wright, Naut., XII, 1898, p. 32. 



Lampsilis villosiis Simpson, Pr. Ac. N. Sci. Phila., 1900, p. 77, pi. i, fig. 1.' 



Suwanee and Escambia rivers, Florida. 



tLAMPSILIS TROSSULUS Lea.^ 



Unio trossulus Lea, Desc. 12 sp. Uniones, 1843; *Tr. Am. Phil. Soc, IX, 1846, 



p. 278, pi. XL, fig. 6 ; *Obs., IV, 1848, p. 36, pi. XL, tig. 6.— *B. H. Wright, Pr. Ac. 



N. Sci. Phila., VI, 1853, p. 259.— 'H. aud A. Adams, Geu. Rec. Moll., II, 1857, p. 



496.— *B. H. Wright, Check List, 1888.— *P.*:tel, Couch. Sam., Ill, 1890, p. 



170._*SiMPSON, Pr. U. S. Nat. Mus., XV, 1892, p. 427, pi. lxviii, fig. 3. 

 "Ma7-garon ( Unio) trossulus Lea, Syu., 1852, p. 25; 1870, p. 39. 



Lake Monroe, Florida. 



tLAMPSILIS PELLUCIDUS Lea. 



" Unio j)ellucidus Lea, Pr. Am. Phil. Sci., IV, 1845, p. 163. — *Tr. Am. Phil. Soc, X, 

 1845, p. 70, pi. II, fig. 6; Obs., IV, 1848, p. 44, pi. ii, fig. 6.— Conrad, Pr. Ac. N. 

 Sci. Phila., VI, 1853, p. 254.— H. aud A. Adams, Geu. Eec. Moll., II, 1857, p. 

 492. —B. H. Wright, Check List, 1888.— P^tel, Conch. Sam., Ill, 1890, p. 162. 



""Margaron {Unio) pelhicldus Lea, Syu., 1852, p. 39; 1870, p. 62. 



Flint and Chattahoochee rivers, Georgia. 



tLAMPSILIS MINOR Lea. 



Unio minor Lea, Desc. 12 sp. Uiiioues, 1843; *Tr. Am. Phil. Soc, IX, 1846, p. 276, 



pi. xxxix, fig. 3; * Obs., IV, 1848, p. 34, pi. xxxix, fig. 3.— ^Conrad, Pr. Ac. N. 



Sci. Phila., VI, 1853, p. 252.— *H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 



494.— -"B. H. Wright, Check List, 1888.— ^Simpson, Pr. U. S. Nat. Mus., XV, 



1892, p. 425, pi. lxvii, fig. 2. 

 ^Marcjaron ( Unio) minor Lea, Syu., 1852, p. 31; 1870, p. 49. 

 ^Unio stearnsii B. H. Wright, Check List, 1888. 



Florida aud southwestern Georgia. 



tLAMPSILIS PAPYRACEUS Gould. 



* Unio papyraceus Gould, Pr. Bost. Soc N. Hist., II, 1845, p. 53. — *Conrad, Pr. Ac. 

 N. Sci. Phila., VI, 1853, p. 2.54.— *H. aud A. Adams, Geu. Rec. Moll., II, 1857, 



' Dr. Lea has only two specimens of this shell, both iu very bad condition — dead 

 and eroded. I have been much inclined to believe that it was a form of L. amyg- 

 dalum, but recently a specimen iu better condition submitted for my inspection by 

 Mr. B. H. Wright would seem to show that the two are distinct. 



-A doubtful species. The type is the only specimen I have ever seen which I can 

 refer with any certainty to tliis species. It is a small, rather solid shell, and may be 

 an unusually heavy /.. amygdalum. 



