34. G. C h r i s t y i, Lea. 



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



Nat. Sci., v. pt. 3, p. 328, t. 38, 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. o 1 i v e 1 1 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. i n t e r r u p t 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. Sci., v. pt. 3, p. 326, t. 38, f. 181, March, 1863. Obs. ix. 



p. 148. 



38. G. crispa, 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. f o rm osa, 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. 387. Brot, List, 



p. 35. 



40. G. m e d i o 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 vesicula, Lea, Proe. 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. 1 a q u e a t a, Say. 



Melania lagueata, 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 U. 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 Ourreyana, Lea, in the plicse, but differs in form, 

 t More convex and with more regular striae than G. nassula, Conrad. 

 1 Close to O. nassula, Conrad, but is striate, and the aperture is more rounded. 

 \ Differs from O. Tuomeyi, Lea, in the form of the aperture. The specimens before me are not 

 ail two-banded, some of them being without bands, and of a light yellowish color. 



