310 NEW MELANIDiE OF THE UNITED STATES. 



no decussating revolving strias. The aperture is more than one-third the length of 

 the shell. 



GONIOBASIS STRENUA. PL 37, fig. 161. 



Testa plicata, subfusifornii, fusco-olivacea, subtenui, evittata ; spira subelevata ; suturis valde inipressis; 

 anfractibus instar septeuis, planulatis ; apertura, subgrandi, ovato-rhomboidea, intijs albida ; labro 

 acuto, subsinuoso ; columella ineurva, et contorts . 



Shell folded, subfusiform, brownish olive, rather thin, without bands ; spire some- 

 what raised ; sutures very much impressed ; whorls about seven, flattened ; aperture 

 rather large, ovately rhomboidal, whitish within ; outer lip subsinuous ; columella 

 bent in and twisted. 



Proc. Aead. Nat. Sci., 1862, p. 267. 



Hal, — Benton County, North West Alabama, G. Hallenbeck. 



My cabinet and cabinet of Mr. Hallenbeck. 

 Diam. -44, Length 1-01 inch. 



Remarks. — Two specimens only were procured by Mr. Hallenbeck, and these are 

 before me. The smaller one is rather lighter in color and inclines to be more brown. 

 It is allied to Melania ( Goniobasis) athleta, Anth., but is a shorter shell, with two or 

 three less number of whorls. It also differs in being of a greenish color, and in having 

 fewer and more distant folds. It also differs in the base of the columella being more 

 direct. In our shell the folds are lost in a carinate edge above the suture. In the 

 body whorl there are minute venations. Immediately below the suture there is a 

 line of lighter color. The aperture is four-tenths the length of the shell. 



Goniobasis spaeus. PL 37, fig. 162. 



Testa plicata, subattenuata, pallido-flavescente, subcrassa, evittata ; spira, attenuate, mucronata ; suturis 

 irregulariter impressis ; anfractibus octonis, convesiusculis ; apertura subruagna,, ovato-rhomboidea, 

 intiis alba ; labro acuto, sinuoso ; columella parum ineurva, superne lutea, inferne alba, contorts,. 



Shell folded, somewhat drawn out, pale yellow, somewhat thick, without bands ; 

 spire attenuate, sharp-pointed ; sutures irregularly impressed ; whorls eight, slightly 

 convex ; aperture rather large, ovately rhomboidal, white within ; outer lip acute, 

 sinuous ; columella somewhat bent in, yellow above and white below, twisted. 

 Proc. Acad. Nat. Sci., 1862, p. 267. 



Hab. — Tennessee, Dr. Currey and President Lindsley. 



My cabinet. 

 Diam. -28, Length -74 inch. 



Remarks. — This is a graceful sharp-pointed species, closely allied to Deshasysiana 

 (nobis), but is rather more slender, is a little more inflated below the sutures and is 

 rather more solid in its structure. It has the same strias along the upper part of 

 the whorls which decussate the folds. It is more ovate in the aperture, the base not 



