36 



4. G. n u b i 1 a, Lea.* 



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

 Goniobasis nubila, Lea, Jour. Acad. Nat. Sci. v. pt. 3, p. 235, March, 1863. 

 Obs. ix. p. 57. 



5. G. varians, Lea.f 



Melania varians, Lea, Proc, Acad. Nat. Sci. p. 120, 1861. 

 Goniobasis varians, Lea, Jour. Acad. Nat. Sci. v. pt. 3, p. 219, t. 34, f. 2, 

 March, 1863. Obs. ix. p. 41. 



<J. G. H y d e i i, Conrad. 



Melania Sycleii, Conrad, New Fresh- Water Shells, p. 50, t. 8, f. 1, 1834. 

 Reeve, Monog. Melania, sp. 248. DeKay, Moll. N. York, p. 93. Wheat- 

 ley, Cat. Shells U. 8. p. 25. Binney, Check List, No. 141. 



Melania Hi/del, Conrad, Jay, Cat. Shells, 4th edit. p. 273. Brot, List, p. 32. 

 Hanley, Conch. Misc. t. 1, f. 3. 



Melania Hydii, Conrad, Catlow, Conch. Nomene. p. 187. 



7. G. d e c o r a t a, Anthony. 



Melania decorata, Anthony, Proc. Acad. Nat. Sci. p. 55, Feb. 1860. Reeve, 



Monog. Melania, sp. 251. Binney, Check List, No. 86. Brot, List, p. 32. 

 Goniobasis Tryoniana,^ Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. Acad. 



Nat. Sci. v. pt. 3, p. 342, t. 38, f. 207, March, 1863. Obs. ix. p. 164, 



*. 38, f. 207. 

 Goniobasis granata, Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. Acad. 



Nat. Sci. v. pt. 3, p. 343, t. 38, f. 209, March, 1863. Obs. ix. p. 165. 



8. G. cselatura, Conrad. 



Melania ccclatura, Conrad, Proc. Acad. Nat. Sci. iv. p. 154, Feb. 1849. .lourn. 



Acad. Nat. Sci. i. pt. 4, p. 278, t. 38, f. 3, Jan. 1850. Binney, Check 



List, No. 58. Brot, List, p. 32. Reeve, Monog. Melania, sp. 245. 

 Goniobasis Stewardsoniana, Lea, Proc. Acad. Nat. Sci. p. 272, 1862. Jour. 



Acad. Nat. Sci. v. pt. 3, p. 344, t. 38, f. 210, March, 1863. Obs. ix. 



p. 166. 

 Goniobasis Tryoniana, Lea, Description in part. 



9. G. o c c a t a, Hinds. 



Melania occata, Hinds, Ann. and Mag. Nat. Hist. xiv. p. 9. Zool. Voy. 



Sulphur. Mollusca, ii. p. 56, t. 15, f. 5. Catlow, Conch. Nomene: p. 188. 



Brot, List, p. 34. Lea, Proc. Acad. Nat. Sci. p. 81, April, 1856. Reeve, 



Monog. Melania, sp. 267. 



Juga occata, Hinds, Chenu, Man. de Cohchyl. i. f. 2016. 

 Melania Shastaen&is,\\ Lea, Reeve, Monog. Melania, sp. 318. 



10. G. catenaria, Say. 



Melania catenaria, Say, Jour. Acad. Nat. Sci. ii. p. 379, Dec. 1822. Binney, 

 Reprint, p. 111. Binney, Check List, No. 52. Reeve, Monog. Melania, 

 sp. 336. DeKay, Moll. N. York, p. 93. Wheatley, Cat. Shells U. S. 

 p. 24. Gibbes, Rep't. S. Carolina, p. 19. Jay, Cat. 4th edit. p. 273. 

 Catlow, Conch. Nomene. p. 185. Brot, List, p. 34. 



* Closely allied to G. oliva, Lea, but is larger, longer and tuberculate. 



t Nearly always tuberculate, and shouldered below the sutures. 



J G. decorata is a young shell, and, as is usual iu this group, is sharply angulated at the peri- 

 phery. G. granata represents a half grown shell, and here the angle is almost obsolete, while G. 

 Tryoniana is the mature form. The entire identity of these several descriptions is proved by a 

 aeries of over two hundred specimens before me, 



Mr. Lea's figure of Tryoniana belongs here, but his description of that species is made to include 

 the next species, Cfclaturu, Conr. Th green variety of granata. is a shell of much heavier texture, 

 and may prove distinct. 



Z Half grown shell of cielatura. 



if The Shastaensis of Mr. Lea is a very different shell, and certainly ought never to have been 

 confounded with this specie*, which it does not resemble in any particular. 



