GONIOBASIS. 287 



whorls regularly convex; aperture small, ovate, angular above, dark 

 purple within ; columella incurved, purple. 



Opercuhim dark brown, the polar point being low dowu and near 

 to the left margin. 



JIabi'at. — Clear Creek, Shasta County, California; Dr. Trask. 



Diameter, -23; length, -07 of an inch. 



Ohservatio7is. — A number of good specimens with their opercula 

 were sent to me by Dr. Trask. In form, size and color, this species 

 is very like to Melanin semicarinata, Say, from Georgia and South 

 Carolina. It may be distinguished at once by not having the cari- 

 nation of that species which is usually strongl}- marked. It p,g 554, 

 is not quite so high in the spire, and the aperture is more 

 rounded at the base. In all the specimens of nirjrina which 

 I received, the apex is woi'n off. In the half grown ones I 

 can see no disposition to carination or plication in the upper 

 whorls. I should suppose that in perfect specimens, the number of 

 whorls would be found to be about seven, and that the aperture Avould 

 be about the third of the length of the shell. In some of the speci- 

 mens there is a disposition to put on a few, fine strise, and in most 

 of them there is a very small angular line running below the suture. 

 I am not acquainted with Dr. Gould's Melania silicula and hulbosa 

 from Oregon, described in the Proc. Boston Soc. Nat. Hist., Julj', 

 1847 ; but from the descriptions, I have no doubt that they are differ- 

 ent from both species herein described. — Lea. 



189. G. proxima, Say. 



Melanin, proxima, Say, Jour. Acad. Nat. Sci.. p. 120, Sept., 1825. BiNXEY'S edit, of 



Say, p. 115. BiNNEY, Check List, Mo. 220. DeKav, Moll. N. Y. , p. 99. 



VVHEATLEY.Cat. Shi.'lls U. S., p. 3G. GiBBES' Report, p. 19. Jay, Cat.. 4l;h edit., 



p. 274. Bkot, List, p. 38. 

 Jugn proxima. Say, Adams, Genera, i, p. 304. 

 Melani.icnrinata, Ravenel, Cut., p. 11, 1834. Wheatley, Cat. Shells U. S.. p. 24. 



BiNNEY, Clicck List, Xo. 47. 

 Melania Taitiana, Lea, Philos. Proc. ii, p. 11, Feb., 1841. Thilos. Trans., viii. p. 



1C5. t. 5, f. 5. Obs., iii, )). 3. DeKay, Moll. N. Y., p. 92. Wheatley, Cat. 



Shells U. S.. p. 27. Jay, Cat., 4th edit., )). 275. Bin.ney. Check List, Xo. 214. 



CatloW, Conch. Xomenc, p. 189. Eeeve, Monog. Melania, sp. 444. Brot, 



Li t, p. 37. 

 Melania approximafn, IlALDEMAS, Monog. Limniades, No. 4, p. 4 of Cover, Dec, 



28, 1341. Jay, Cat., 4th edit., p. 272. Bixsey, Check List, Xo. 18. Brot, List, 



p. Sfi. 

 Melania ahjecta, Haldeman, Reeve, Monog. Melania, pp. 341. Brot, List, p. 34. 

 Goniobasis rubricata, Lea, IMoc. Acad. Nat. Sci., p. 271, 18G2. Jour. Acad. Nat. 



Sci., V, pt. 3, p. 3)5, t. 38, f. 197. Obs., i.\, p. 157, t. 38, f. 197. 



