[ 20 ] 



7. Succinea obliqua, Saj. 



Plate 2, figure 7. 



Ovate, very tliin and fragile, pellucid, shining, irregularly 

 wrinkled or striate ; spire short, minute, suture well impressed; 

 whorls 3, a little oblique, the last very large, expanded, ovate; 

 aperture large, oval, both lips equally rounded, a lijtle angular 

 behind, equalling nearly three-lburths the total length. Yel- 

 lowish or yellowish green. 



Length 20, diam. 13 mill. Cell .IV. (T • V^ • ~ McXcnrJopj; Y. 



British America to Virginia, westward to Arkansas, Iowa. 



8. Succinea Greerii, Tryon. (Nov. spec.) 



Plate 2, figure 8. 

 Ovnte, rather thick, rugose, not transparent; spire short 

 conical, suture moderately impressed ; whorls 3, but slightly 

 oblique, well roiuided, the last one a little flattened above the 

 periphery; aperture ovate, tiiree-litths the total length, not 

 acute above, well rounded below ; columella twisted, with a 

 slight callous deposit. Light yellowish or greenish horn color. 



Length 15, diam. 9 mill. 



Yicksburg, Miss. — Col. James Greer. 



This species was recently sent to the Academ3^ of Natural 

 Sciences in considerable numbers by Col James Greer. Most 

 of the specimens were smaller than the one figured. It appears 

 to be intermediate between S. nhUipia,S[iy, and S. Grosocmnrii, 

 Lea, differing from the former in color, texture, the contorted 

 and less curved columella, smaller size, and less swollen con- 

 tour, as well as more regular increase of the whorls; and from 

 the latter by its color, less convexity, more ovate aperture, &c. 



9. Succinea Grosvenorii, Lea. 



Plate 2, figure 9. 



Ovate, thin, translucent, shining, distantly striate; spire 

 elevated, apex acute, suture well impressed; whorls 3, a little 

 oblique, the body large but not much inflated; aperture broad- 

 ly rounded, the columella impressed above, equalling two- 

 thirls the total length. Light lemon color. 



Langth 12, diain. 8 mill. 



Alexandria, La. 



Smaller than No. 8, with more elevated spire, more convex 

 whorls, and heavier texture. 



