248 



Unio perplexus, Say, 1830, Am. Con. i 13.") 



personatus, Oct. 7, 1829, N. H. D. ii. 308 131 



j)eruvianus^ Lam. ? Syn. 41 225 



phaseolus, Hildreth, Sept. 1831, Am. Con. iii. pi. 22 171 



phaseolus, Hildreth, Syn. 20 224 



pileus, Lea, Syn. 27 224 



planulatus, Lea, Syn. 20, v. phaseolus, Hild 224 



planus, Barnes, Syn. 4 223 



plicata, 1816, 1818, 1819, N. E. 1, 2, 3 eds. pi. f. 4 50 



plicatus. Syn. 55 225 



politus, Syn. 53 225 



po)iderosns, Gray? Syn. 20 224 



prcelongiis, Barnes, Syn. 8 223 



purpicrescens. Sow. Syn. 4 223 



purpureus, 1816, 1818, 1819, -N. E. 1, 2, 3 eds. pi. 2, f. 1 ; Oct. 



21, 1829, N. H. D. ii. 324; 1840, Desc. 7 50, 135 



purpuriatus, Jan. 15, 1830, N. H. D. 1840, Desc. 6 133 



pustulatus, Lea, Syn. 28 224 



pusiulosus, Lea, Syn.. 30 224 



pyramidaius, Lea, Syn. 38 224 



quadrulus, Raf. Syn. 29, April, 1834, Am. Con. vi. pi. 53. ..207, 224 



radiaius, Gm. ? Syn. 2 223 



rariplicatus, Lam. Syn. 55 225 



rectus, Lam. Syn. 8 223 



reflexus, Raf. Syn. 25 224 



retusus, Raf. Syn. 26 224 



ridibundus,, Oct. 1829, N. H. D. ii. 308 ; Am. Con. 1830, 



i. pi. 5 154, 131 



rotundatus, Lam.? Syn. 32 224 



rubiffinosus, Lea. Syn. 22 224 



rugosus, Barnes, Syn. 29, v. U. quadrulus, Raf. 224 



scalenus, Raf. Syn. 35 224 



securis, Lea, Syn. 18, v. U. lineolatus, Raf. 224 



siliquoides, Barnes, Syn. 2 223 



soleniformis, Lea, Syn. 50 225 



solenoides, Raf. Syn. 10 224 



stapes, Lea, var. Syn. 26 224 



stegarius, Raf. Syn. 37 224 



subovatus, Lea, Syn. 11 224 



subrostratus, Jan. 15, 1830, N. H. D. ; 1840, Desc. 7, 



Syn. 58 134, 225 



subrotundus, Lea, Syn. 53 225 



subrotundus, Raf. Syn. 32 224 



subtentus, Nov. 1825, J. A. v. 130 ; April, 1831, Am. Con. ii. 



pi. 15 118, 165 



sulcatus, Lea, Syn. 33 224 



sulcatus, Lea, 1830, Am. Con. i. pi. t 154 



tennis siinus, Lea, Syn. 4 223 



teres, Raf. Syn. 42 225 



tetralasmus, Sept. 1831, Am. Con. iii. pi. 23..., 173 



triangularis, Raf. Syn. 34 224 



triangularis, Barnes, 1830, Am. Con. i. pi. 4 15M 



triangularis, Barnes, Syn. 15 224 



trapezoides. Lea, Syn. 47 225 



trigonus, Lea, Syn. 57 225 



triqucter, Raf. Syn. 15 224 



truncatus, Raf. Syn. 16, Am. Con. vii. pL 67 230, 224 



