NO. IMS. svynrsis OF TIII: NAIADES siMrsox. 541 



t LAMPSILIS T^ENIATUS Conrad. 



* Unto tvniatus CONRAD, New F. W. Shells, 1834, pp. 26, 72, pi. iv, fig. 2.' *FERTTS- 



SAC, Guer. Mag., 1835, p. 29. MOLLKR, Syn. Nov. Gen., 1836, p. 201.* HANI.E Y, 

 Test. Moll., 1842, p. 191 ; *Biv. Shells, 1843, p. 191. *CHENU, Bib. Conch., 1st 

 ser., Ill, 1845, p. 15. *CATLOW and REEVE, Conch. Nom., 1845, p. 64. *CoN- 

 RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.* KUSTER, Conch. Cab. Unio, 1862, 

 p. 271, pl.xci, fig. 4. *B. H. WRIGHT, Check List, 1888. 



* Margarita ( Unio) tcvniatus LEA, Syn., 1836, p. 24; 1838, p. 19. 



* Unio taniatm P^TEL, Conch. Sam., Ill, 1890, p. 169. 



* Unio menkianus LEA, Tr. Am. Phil. Soc., V, 1836, p. 76, pi. xix, fig. 59; *Obs., II, 



1838, p. 76, pi. xix, fig. 59. * TROSCHEL, Arch. fiirNaturg., V, 1839, Pt. 2, p. 

 237. * HANLEY, Test. Moll., 1842, p. 191; * Biv. Shells, 1843, p. 191, pi. xxiu, 

 fig. 4. *CATLOW and REEVE, Couch. Nom., 1845, p. 61. *CONRAD, Pr. Ac. N. 

 Sci. Phila., VI, 1853, p. 252. *CHENU, 111. Conch., 1858, pi. xix, figs. 4, 4a, 

 46. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492. * KUSTER, Conch. 

 Cab. Unio, 1861, p. 245, pi. LXXXII, fig. 3.* REEVE, Conch. Icon., XVI, pi. 

 xxvin, fig. 140.* B. H. WRIGHT, Check List, 1888. * P.ETEL, Conch. Sam., 

 Ill, 1890, p. 159. 



* Margarita ( Unio) menkianus LEA, Syn., 1838, p. 19. 

 *Margaron ( Unio) menkitmns LEA, Syn., 1852, p. 27; 1870, p. 43. 



* t'niopulcher'LKA., Tr. Am. Phil. Soc., VI, 1838, p. 6, pi. m, fig. 6; *Obs., II, 1838, 



p. 6, pi. in, fig. 6. 'TROSCHEL, Arch. fiirNaturg., V, 1839, Pt. 2, p. 234.* HAN- 

 LEY, Test. Moll., 1842, p. 193; * Biv. Shells, 1843, .p. 193, pi. xxm, fig. 7. ''CAT- 

 LOW and REEVE, Conch. Nom., 1845, j>. 63. *H. and A. ADAMS, Gen. Rec. 

 Moll., II, 1857, p. 494. *CHENU,I11. Conch., 1858, pi. xvn,figs. 2, 2a, 26. 

 * KUSTER, Conch. Cab. Unio, 1861, p. 193, pi. LXI, fig. 5. *E. H. WRIGHT, 

 Check List, 1888.* P.ETEL, Conch. Sam., Ill, 1890, p. 164. 



'Margarita ( Unio) pulcher LEA, Syn., 1836, p. 25; 1838, p. 19. 



*Margaron ( Unio) pulcher LEA, Syn., 1852, p. 28; 1870, p. 44. 



* Unio interrupt LEA, Tr. Am. Phil. Soc., VI, 1838, p. 15, pi. vi, fig. 15 ; *Obs., II, 



1838, p. 15, pi. vi, fig. 15. * HANLEY, Test. Moll., 1842, p. 191; * Biv. Shells, 1843, 

 p. 191, pi. xxi, fig. 28.* CATLOW and REEVE, Conch. Nom., 1845, p. 60.* H. 

 and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 494.* CHENU, 111. Conch, 1858, pi. 

 xvn, figs. 4, 4a, 46.* B. H. WRIGHT, Check List, 1888. 

 * Margarita ( Unio) interrupts LEA, Syn., 1836, p. 24; 1838, p. 19. 



* Margin-on ( Unio) interntptus LEA, Syn., 1852, p. 27 ; 1870, p. 43. 



*Unio latiradiatus CONRAD, Monog., XI, 1838, p. 96, pi. LIII; Pr. Ac. N. Sci. 

 Phila., VI, 1853, p. 251. * KUSTER, Couch. Cab. Unio, 1861, p. 208, pi. LXIX, 

 fig. 3. P.ETEL, Conch. Sam., Ill, 1890, p. 151. 



*Unio tennesseensis LEA, 2 Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., 

 VIII, 1843, p. 199, pi. x, tig. 11 ; 3 *Obs., Ill, 1842, p. 37, pi. x, fig. 11. *CONRAD, 

 Pr. Ac. N. Sci. Phila., VI, 1853, p. 258.* H. and A. ADAMS, Gen. Rec. Moll., II, 

 1857, p. 495. *CHENC, 111. Couch., 1858, pi. xxvn, figs. 1, la, 16. *B. H. 

 WRIGHT, Check List, 1888. * P.ETKL, Conch. Sam., Ill, 1890, p. 169. 



*Margaron (Unio) iennesseensia LEA, Syn., 1852, p. 27; 1870, p. 43. 



* Unioperdix REEVE, Conch. Icon., XVI, 1864, pi. xvm, fig. 82. 



Tennessee and Cumberland river systems. 



1 Lea places this species in the synonymy of his Unio interruptus, in the Synopsis. 

 The latter was not published until 1838. 



8 The type is an old female tceniatus, very solid, and but slightly rayed. 



3 Lea states in the above citation that this species has radial beak sculpture. The 

 beaks of his type are slightly eroded, having the appearance of somewhat rayed ridges, 

 and I have seen the same thing in the eroded beaks of Unio rotundatus Lamarck, 

 but it is not true beak sculpture. Many Unios when decomposing exhibit throughout 

 their shells a somewhat radial structure, and that is what is shown in this case. 



