240 NEW MELANID2E OF THE UNITED STATES. 



elevata • suturis irregulariter impressis ; anfraotibus senis, superne convexis, ultimo elongate ; aper- 

 tura subconstricta, elongato-ovata, intus purpurescente ct vittata ; labro acuto, spissato ; columella 

 inferne incurvata, purpurea, ad basim rotundata. 

 Shell rugosely striate, subfusiform, rather large, four-banded, variegated, shining ; 

 spire obtusely elevated ; sutures irregularly impressed ; whorls six, convex above, 

 the last elongate; aperture somewhat constricted, elongately ovate, purplish and 

 banded within ; outer lip acute, thickened ; columella incurved and purple below, 

 rounded at the base. 



Mdania lita, Proc. Acad. Nat. Sci., 1861, p. 121. 



Hah.— Cahawba River, Alabama, E. E. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -31, Length -78 inch. 



Remarks. — I have seen but a single specimen of this species. It is remarkable 

 for the several greenish and brownish tints of the exterior and its purple aperture. 

 The apicial whorls are plicate. The two lower whorls have rather rugose stride. 

 Other individuals may differ from the characters given above. The aperture is about 

 two-fifths the length of the shell. It is one of the pupoid group and is nearly allied 

 to fallax, herein described, but it is not so cylin tfical and the aperture is longer. 

 It differs also in color. 



GONIOBASIS iEQUA. PI. .34 fig. 41. 



Testa substriata, conica, subcrassa, tenebroso-fusca ; spirt subelevata ; suturis impressis; anfraotibus 

 instar senis, superne planulatis ; apertura parva, rliomboidea, intus albida ; labro acuto ; colu- 

 mella inflecta, paulisper incrassata, ad basim obtuse angulata. 



Shell substriate, conical, somewhat thick, dark brown ; spire somewhat elevated ; 

 sutures impressed ; whorls about six, flattened above ; aperture small, rhomboidal, 

 whitish within ; outer lip acute ; columella inflected, slightly thickened, obtusely 

 angular at the base. 



Mdania cequa, Proc. Acad. Nat. Sci., 1861, p. 122. 



Hal —Yellowleaf Creek, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -37, Length -34 inch. 



Remarks. — This is a modest looking species near to pudica, herein described. One 

 of the specimens has a few obscure transverse striae on the lower part of the whorls, 

 the other has them nearly over the whole surface. Both specimens are imperfect at 

 the spire. The aperture is about one-third the length of the shell. 



GONIOBASIS CREPERA. PI. 34, fig. 42. 



Testa substriata, conica, subcrassa, fuliginosa ; spira subelevata ; suturis irregulariter impressis ; anfrac- 

 tibus senis, convexiusculis ; apertura ovato-rhombica, intus albida; labro acuto; columella inflecta. 

 superne paulisper incrassata, ad basim obtuse angulata. 



