NEW MELANIDtE OF THE UNITED STATES 227 



Shell smooth, subelliptical, a little thick, greenish yellow, shining ; spire obtusely 

 conical ; sutures very much impressed ; whorls eight, somewhat convex ; aperture 

 somewhat constricted, ovately rhombic, whitish and four-banded within ; outer lip 

 acute, columella incurved, angular at base. 



Melania quadrivittata, Proe. Acad. Nat. Sci., 1861, p. 119. 



Hal. — Coosa River, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diarn. -38, Length -84 inch. 



Remarks. — This brilliant species, with its four well-defined, dark brown bands on a 

 dark yellow, is allied to fascmans, herein described, and to Melania pupmdea, Anth., but 

 it is shorter and more robust than either. The five specimens before me are very nearly 

 of the same size, and all have four beautiful bands which are somewhat close, and 

 give a darkish color to the whole. The aperture is more than one-third the length of 

 the shell. 



GONIOBASIS STRAMINEA. PI. 34, fig. 16. 



Testa lsevi, subfusiformi, obtuse eonoidea, crassiuscuia,, strarninea ; spira valde obtusa ; suturis ini- 

 pressis ; anfractibus quinis, ultimo pergrandi et subinflato ; apertura grandi, elongato-elliptica,, 

 intus luteo-albida ; labro acuto ; columella arcuata, superne paulisper callosa, ad basim obtuse 

 angulata. 



Shell smooth, subfusiform, obtusely conoidal, somewhat thick, straw color ; spire 

 raised ; sutures impressed ; whorls five, the last large and somewhat inflated ; aper- 

 ture large, elongate elliptical, yellowish white within, outer lip acute ; columella 

 arcuate, slightly callous above, obtusely angular at the base. 



Operculum ovate, spiral, light brown, with the polar point near the edge towards 

 the base. 



Melania straminea, Proc. Aead. Nat. Sci., 1861, p. 121. 



Hah. — Coosa River, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 



Diam. -40, Length -80 inch. 



Remarlcs. — The regularly elliptical outline of this species is remarkable among the 

 Goniobases. There is no appearance of bands in either of the three specimens sent by 

 Dr. Showalter. One of them has a slight line of brown in the callus of the interior 

 above. The largest specimen has some indistinct strice towards* the base of the whorl. 

 It is nearly allied to Melania olivula, Conrad, but it is more inflated and has a shorter 

 spire. The aperture is more than half the length of the shell. 



GONIOBASIS LEPIDA. PI. 34, fig. 17. 



Testa lsevi, subfusiformi, subtenui, luteo-cornea, obsolete vittata, nitida ; spira, elevata; suturis valde 

 impressis ; anfractibus iustar senis, superne convexiusculis, inferue inflatis ; apertura subgrandi, 

 ovata, intus luteo-alba ; labro acuto; columella innecta, superne incrassata, ad basim rotundahi 



