548 PROCEEDINGS OF THE NATIONAL MUSEUM. 



tLAMPSILIS CONCESTATOR Lea. 



""Unio concestator Lka, Pr. Ac. N. Sci. Phila., IX, 18.57, p. 31; '' Jl. Ac. N. Sci. 

 Phila., IV, 1858, p. 66, pi. xii,fig. 48; ^Obs.,VI, 1858, p. 66, pi. xii, fig. 48.— 

 " KusTEK, Conch. Cab. Unio, 1861, p. 178, pi. lvi, fig. 3.— "Eeeve, Conch. 

 Icon., XVI, 1865, pi. xxvi, fig. 128.— *B. H.Wright, Check List, 1888.— 

 *PiETEL, Conch. Sam., Ill, 1890, p. 148.— "^ Simpson, Pr. U. S.Nat. Mus., 

 XVI, 1892, p. 416, pi. Lvm, figs. 2-4. 



*Margaron. ( Unio) concestator Lea, Syn., 1870, p. 45. 



t*C7wiom/e?-cerfe«sLEA, Pr.Ac. N. Sci. Phila., IX, 1857, p. 32; *J1. Ac. N. Sci. Phila., 

 IV, 1858, p. 77, pi. XV, fig. 57; "Obs., VI, 1858, p. 77, pi. xv, fig. 57.— *B, H. 

 Wright, Check List, 1888.— P/ETEl, Conch. Sam., Ill, 1890, p. 155. 



' Margaron ( Unio) intercedens Lea, Syn., 1870, p. 45. 



t*f7mio/anaa;LEA,Pr.Ac.N.Sci.Phila.,lX, 1857,p. 32; * Jl. Ac. N. Sci. Phila., IV, 

 1858, p. 79, pi. XV, fig. 59; *Obs.,VI, 1858, p. 79, pi. xv, fig. 59.— ^ Kuster, 

 Conch. Cab. Unio, 1861, p. 206, pi. lxviii, fig. 7.— ^Sowerby, Conch, Icon., 

 XVI, 1868, pi. Lxxx, fig. 418.— * B.H.Wright, Check List, 1888.— *P^tel, 

 Conch. Sam., Ill, 1890, p. 152. 



* Margaron ( Unio) fallax Lea Syn., 1870, p. 45. 



t" Umo contiguus Lea,' Proc. Ac. N. Sci. Phila., VI, 1861, p. 392; *J1. Ac. N. Sci. 

 Phila,, V, 1862, p. 199, pi. xxviii, fig. 268; Obs., IX, 1863, p. 21, pi. xxviii, fig. 

 268.— B. H. Wright, Check List, 1888.— P^etel, Conch. Sam., Ill, 1890, p. 148. 



* Margaron ( Unio) contiguus Lea, Syn., 1870, p. 45. 



*?7«io U-caelatus Reeve, Couch. Icon., XVI, 1865, pi. xxvi, fig. 130.— *P.etel, 



Conch. Sam., Ill, 1890, p. 146. 

 t * Unio genuinus Lea, Pr. Ac. N. Sci. Phila., XX, 1868, p. 161; * Jl. Ac. N. Sci. Phil., 



VI, 1868, p. 305, pi. XLVi, fig. 117; * Obs., XII, 1869, p. 64, pi. XLVi, fig. 117.— 



* B. H. Wright, Check List, 1888. 



* Margaron ( Unio) genuinus Lea, Syn., 1870, p. 45. 



North Carolina, in streams flowing into the sea, to Louisiana, and 

 possibly to Texas. Some specimens are very close to lienosus. 



LAMPSILIS PROPRIUS Lea.^ 



* Unio proprius Lea, Pr. Ac. N. Sci. Phila., IX, 1865, p. 89 ; " Jl. Ac. N. Sci. Phila., 



VI, 1869, p. 256, pi. XXXI, fig. 70; "^Obs., XII, 1869, p. 16, pi. xxxi, fig. 70.— 



* B. H. Wright, Check List, 1888. 



* Margaron ( Unio) proprius Lea, Syn., 1870, p. 45. 



* Unio striatus Sowerby, Conch. Icon., XVI, 1868, pi. Lxxviii, fig. 407. 



Walker County, Georgia; Clinch River, Virginia. 



LAMPSILIS PUNICEUS Haldeman. 



*Unio puniceus Haldeman,'* Jl. Ac. N. Sci. Phila., VIII, 1842, p. 201.— Conrad, 



Pr. Ac. N. Sci. Phila., VI, 1853, p. 255.— B. H. Wright, Check List, 1888. 

 "^Margaron ( Unio) puniceus Lea, Syn., 1870, p. 46. 



Holston Eiver, Tennessee. 



'A large rather thin L. concestator, I think. 



^Possibly distinct, but more likely a mei e light-colored variety of i, Vanuxemensis. 



" I believe that this species has never been figured. From the description I should 

 judge that; it belonged in this group, and it may be synonymous with some one of 

 its species. 



