NEW MELANID/E OF THE UNITED STATES. 305 



Goniobasis Bkidgesiana. PI. 37, fig. 142. 



Testil lasvi, fusiformi, subinflata, subtenui, mellea, evittata; spira obtuse conica. ad apicem cariuata ; 

 suturis linearibus ; anfractibus instar septenis, planulatis; apertura magna, subrhoniboidea, intus 

 albida ; labro aeuto, vix sinuoso ; columella subinfleeta, inferno et superne incrassata et parum contorta. 



Shell smooth, fusiform, somewhat inflated, rather thin, honey-yellow, without 

 hands ; spire obtusely conical, carinate at the apex ; sutures linear ; whorls about 

 seven, flattened ; aperture large, subrhomboidal, whitish within ; outer lip acute, 

 scarcely sinuous; columella, somewbat bent in, thickened above and below and 

 slightly twisted. 



Proc. Acad. Nat. Sci., 1862, p. 265. 



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



My cabinet and cabinet of Dr. Showalter. 

 Diam. -40, Length -S3 inch. 



Bemarlcs. — A single specimen only was received from Dr. Showalter. It was con- 

 sidered by him to be Melania gravida, Anth., but it does not answer to his descrip- 

 tion. It is allied to Melania ( Goniobasis) mellea (nobis), but differs in being more 

 regularly fusiform, in not being so much inflated, nor having so sharp an apex, and 

 the whorls are flatter. The interior of this specimen is slightly disposed to yellow- 

 ness. There is no appearance of bands on this specimen, and I doubt if it will be 

 found banded. The aperture is nearly one-half the length of the shell. I dedicate 

 this species to my friend R. Bridges, M. D., who has done so much to promote the 

 knowledge of our zoology. 



Goniobasis inteecedens. PI. 37, fig. 143. 



Testa laevi, fusiformi, subtenui, inellea, fulgida, evittata; spira conoidea, mucronata, ad apicem cariuata : 

 suturis linearibus ; anfractibus octonis, planulatis, varicosis; apertura submagna, rhomboidea. intus 

 albida ; labro acuto, vix sinuoso ; columella subinfleeta, parum incrassata, inferne subrecta. 



Shell smooth, fusiform, rather thin, honey-yellow, bright, without bands; spire 

 conoidal, sharp-pointed, carinate at the apex ; sutures linear ; whorls eight, flattened, 

 varicose ; aperture rather large, rhomboidal, whitish within ; outer lip acute, scarcely 

 sinuous ; columella slightly bent in, somewhat thickened, nearly straight below. 

 Proc. Acad. Nat. Sci., 1S62, p. 265. 



Ilab. — Cahawba River, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinets of Drs. Showalter and Hartman. 

 Diam. -30, Length -G9 inch. 



Bemarlcs. — This species is very closely allied to Melania ( Goniohasis) mellea and 

 Bridgesiana herein described. It is the same color, but may be distinguished by its 

 being more slender and having a higher spire. It has also a less twisted columella. 

 In the interior there is a slight disposition to yellowness. Neither of the two speci- 



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