40 



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



Goniobasis Ckristyi, 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 instabil-is, 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. interveniens, 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. olivella, 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. 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.J 



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. xnediooris. 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 vesicula, Lea. 



Melania vesicula, 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 U. S., p. 25. Jay, 

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

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



* Very like Curreyana, Lea, in the -plicae, but differs in form. 

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

 ..,: Close to G. nassula, Conrad, but is striate, and the aperture is more rounded. 

 g Differs from G. Tuomeyi, Lea, in the form of the aperture. The specimeng before me are nvt 

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



