134 NEW UNIONID^, MELANIDiE, ETC., 



pressed ; whorls six, somewhat constricted, flattened above ; aperture rather large, 

 rhomboidal, white within ; outer lip acute, somewhat sinuous ; columella white, bent 



in and somewhat twisted. 



Proe. Acad. Nat. Sci., 1863, p. 154. 



^a6.— Ohio, J. P. Kirtland, M. D. 



My cabinet. 

 Diam. -28, Length -65 inch. 



Bemarlis. — A single specimen was received many years since from Dr. Kirtland 

 with Melania ( Goniobasis) depygis, Say, but while it agrees with it in color and size, 

 it is quite different in the body whorl, and in the form of the aperture. The aper- 

 ture is very much like LWiasia, and it is slightly thickened above on the columella, 

 but there is neither a channel nor callus below. In the whole outline and form of 

 the aperture it is very like Lithasia Downiei, (nobis,) but it is a much smaller shell, 

 a much lighter color, has no tubercles, and has no channel at the base. It is among 

 the few species which are impressed on the body whorl, but it is not so much so as 

 0. informis, herein described, and is a larger and stouter species. The aperture is 

 not quite half the length of the shell. Dr. Kirtland did not state from what part of 

 Ohio it came. 



Goniobasis vittatella. PI. 23, fig. 38. 



Testa Isevi vel subcarinata, conoidea, tenebroso-fusca, uno-vittata ; spira subacuminata ; suturis lineari- 

 bus; anfractibus octonis, plaaulatis ; apertura parva, subrbomboidea, intus tenebrosa; labro aeuto, 

 parum sinuoso ; columella inflecta et contorta. 



Shell smooth or subcarinate, conical, dark brown, single banded ; spire somewhat 

 acuminate ; sutures linear ; whorls eight, flattened ; aperture small, subrhomboidal, 

 dark within ; outer lip acute, somewhat sinuous ; columella bent in and twisted. 

 Proc. Acad. Nat. Sci., 1863, p. l55. 



Bah. — Cumberland Gap, East Tennessee, Major S. S. Lyon, U. S. A. 



My cabinet and cabinet of Major Lyon. 

 Diam. -20, Length -55 inch. 



Eemarhs. — This is a pretty little species when perfect, but most of the specimens 

 sent were imperfect, and covered with vegetable and mineral substances difficult to 

 remove. There is a small light band on the upper part of the whorls immediately 

 below the suture, which is more or less visible on all the specimens before me, some 

 of which have a carina on the upper terminal whorls. In outline and size it is near 

 to Melania {Ooniohasis) glabra, (nobis,) but it is more slender, and that species has 

 no band. The aperture is about one-tenth the length of the shell. 



