GONIOBASIS. 219 



at the base, and it has bauds which the other has not. Both the 

 specimens are furnished with three, equidistant, brown bands, j,jg_ ^gg^ 

 obscure outside, but well defined inside. The older of these 

 two has a thickening inside of the outer lip, and the bands 

 do not extend to the luargin. The aperture is more than the 

 half the length of the shell. I dedicate this species to the 

 Eev. George White, who has done so much to elucidate a knowledge 

 of the mollusca of his State. — Lea. 



The figure copied does not represent the three bands re- 

 ferred to ; but they are present on all the specimens before me. 



106. G. expansa, Lea. 



Melama expansa, Lea, Traus. Am. Pliilos. Soc, ix. p. 28. 



Description. — Shell smooth, somewhat fusiform, rather thick, yel- 

 lowish; spire obtusely conical; sutures somewhat impressed; whorls 

 five, slightly convex ; aperture large, expanded, whitish. 



Habitat. — Alabama. 



Diameter, -43 ; length, -63 of an inch. 



Observations.— A solitary specimen of this was among the shells 

 sent by Dr. Foreman. In form it resembles M. variabilis (nobis), but 

 may be distinguished from that species in being larger, and having 

 a larger proportionate aperture, which is more expanded. The aper- 

 ture is full one-half the length of tlie shell. The specimen under ex- 

 amination has four bands, and the yellow epidermis is nearly covered 

 with a deposit of the oxide of iron. — Lea. 



This shell has not been figured. The species is unknown to 

 me. 



107. G. casta, Anthony. 



Melanin casta, Anthony, Ann. N. Y. Lye. Nat. Hist., vi, p. ]00, t. 2, f. 19, March, 

 18.^)4. P.IXNEY, Check List, No. 50. BuOT, List, p. 32. Reeve, Monog. Mela- 

 nia, sp. 3S1. 



Description. — Shell conical, nearly smooth, thick ; spire obtusely 

 elevated; whorls C-7, nearly flat; sutures well impressed; upper 

 whorls smooth, or only modified by the lines of growth, which are 

 coarse and distinct; body-whorl with five prominent stria; below the 

 middle, of which the lower three also revolve within the aperture 



