40 



34. G. Christyi, Lea. 



Goniobasis Christyi, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. 



Nat. Sci., V. pt. 3, p. 328, t. 3S, f. 185, March, 1863. Obs. ix. p. 150. 

 Goniobasis instabilis, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. .Jour. Acad. 



Nat. Sci., V. pt. 3, p. 329, t. 38, f. 186, March, 1863. Obs. ix, p. 151. 



35. G. int erven ien s, Lea.* 



Goniobasis interveniens, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Journ. 

 Acad. Nat. Sci., v. pt. 3, p. 320, t. 38, f. 169, March, 1863. Obs. ix. 

 p. 142. 



36. G. 1 i V e 11 a. Lea. 



Goniobasis olivella, Lea, Proceed. Acad. Nat. Sci., p. 269, 1862. Journ. 

 Acad. Nat. Sci., v. pt. 3, p. 327, t. 38, f. 182, March, 1863. Obs. ix. 

 p. 149. 



37. G. interrupt a, Haldeman. 



Melania interrupta, Haldeman, Supplement to No. 1, Monog. Limniades, 



Oct. 1840. Wheatley, Cat. Shells U. S., p. 25. Jay, Cat., 4t edit., p. 



274. Brot, List, p. 34. Reeve, Monog. Melania, sp. 398. 

 Goniobasis ornatella, Lea, Proceed. Acad. Nat. Sci., p. 269, 1862. Journ. 



Acad. Nat. Soi., v. pt. 3, p. 326, t. 38, f. 181, March, 1863. Obs. ix. 



p. 148. 



38. G. oris pa, Lea.f 



Goniobasis crispa, Lea, Proc. Acad. Nat. Sci., p. 269, 1862. Jour. Acad. 

 Nat. Sci., V. pt. 3, p. 326, t. 38, f. 180, March, 1863. Obs ix. p. 148. 



39. G. form OS a, Conrad, t 



Melania formosa, Conrad, New Fresh-Water Shells, Appendix, p. 5, t. 9, f. 



3, 1834. Wheatley, Cat. Shells U. S., p. 25. Binney, Check List. 



No. 112. 

 Melania formosa, Anthony, Reeve, Monog. Melania, sp. 337. Brot, List, 



p. 35. 



40. G. m e d i c r i s. Lea. 



Goniobasis mediocris, Lea, Proceed. Acad. Nat. Sci., p. 269, 1862. Journ. 

 Acad. Nat. Sci., v. pt. 3, p. 326, t. 38, f. 179, March, 1863. Obs. ix. 

 p. 148. 



41. G V e s i c u 1 a. Lea. 



Melania vesicala, Lea, Proc. Acad. Nat. Sci., p. 118, 1861. 

 Goniobasis vesicula, Lea, Jour. Acad. Nat. Sci., v. pt. 3, p. 242, t. 35, f. 45, 

 March, 1863. Obs. ix. p. 64. 



42. G. Duttonii, Lea.§ 



Goniobasis Duttonii, Lea, Proceed. Acad. Nat. Sci., p. 266, 1862. Journ. 

 Acad. Nat. Sci., v. pt. 3, p. 314, t. 37, f. 158, March, 1863. Obs. ix. 

 p. 136. 



43. G. laqu eat a. Say. 



Melania laqueata, Say, New Harmony Disseminator, p. 275, September, 

 1829. Say's Reprint, p. 17. American Conchology, No. 5, t. 47, f. 1. 

 Binney's edition, pp. 143 and 200. Binney, Check List, No. 158. De- 

 Kay, Moll. New York, p. 97. Wheatley, Cat. Shells D. S., p. 25. Jay, 

 Cat., 4th ed., p. 274. Reeve, Monog. Melania, sp. 281, 288? Brot, 

 List, p. 35. Catlow, Conch. Nomenc, p. 187. 



* Very like Curreyana, Lea, in the plica, but differs in form, 

 t More convex and with more regular strife than G. nasxida, Conrad. 

 t Close to G. Jiassala, Conrad, but is striato, and tlie aperture is more rounded. 

 I Differs from G. Tiwmeyi, Lea, in the form ot' the aperture. The specimens before me are not 

 all two-bandeJ, some of them being without bands, and of a light yellowish color. 



