212 A MANUAL OP AMERICAN LAND SHELLS. 



A species of the Cumberlaud Subregion, Roan Mountain, Mitchell 

 County, North Carolina. Mrs. G. Andrews. 



Lingual dentition {I. c. Fig. I) as usual in the genus. Teeth 

 38-1-38, with 4 or 5 laterals on each side. The eighth is a perfect 

 marginal. 



Animal dark slate-color. Caudal mucous pore as in Z. su2>x>ressiis. 



Genitalia (Z. c, Plate XIV, Fig-. D) as in fuUginosus, Iwvigatits, &c. 

 The accessory part of the penis sac in this species is continued to a 

 point beyond the retractor muscle. 



Named in honor of Dr. Eugel, late of Knoxville, to whom Shuttle- 

 worth was indebted for the species of that region. 



Zoiiites deiuissus, Binney. 



Shell perforated, depressed-convex ; epidermis yellowish horn-color, 

 shining ; whorls 6, with minute lines of growth ; spire obtuse ; 

 suture impressed 5 body- whorl expanding very little towards 

 the aperture; aperture transverse, not large, slightly ob- 

 lique, a white, testaceous deposit within; peristome thin, 

 z demis- acute; base rather tiat, smooth ; perforation very small; umbil- 

 *"*■ ical region a little impressed. Greater diameter 11^, lesser 

 10^"™; height, 6"'"\ 



Hdix demissa, Binney, Bost. Journ. Nat, Hist., iv, 361, pi. xvi, fig. 10 (184:i); Terr. 

 Moll., ii, 232, pi. xlii, fig. 1 (1851).— Pfeiffek, Mou. Hel. Viv., i, 58; iv, 

 48.— Reeve, Con. Icon., No. 1491.— AV. G. Binney, Terr. Moll., iv, 116. 



Mesomplnx demissa, Tryon, Am. Journ. Concli., ii, 255 (1860). 



HyaUna demissa, W. G. Binney, L. & Fr.-W. Sh., i, 45 (1809). 



Zonites acerra, Lewis, Proc. Ac. N. Sc. Pliila., 1875, 335. 



Zonites dcmissus, W. G. Binney, Terr. Moll., v, 104, fig. 125. 



The center of distribution of this species seems to be the Cumber- 

 land Subregion, where it has attained its finest growth. From here it 

 ranges into Western Pennsylvania, North Carolina (at least as far as 

 Goldsborough), Georgia, Alabama to the Gulf of Mexico, Arkansas, 

 and Texas. 



Animal light slate or smoky white, dark blue on head, eye-peduncles, 

 and tentacles ; tuberosities on back few and large ; a line of farrows 

 rims along the side of the foot, and, rising on the tail, meets that of the 

 opposite side above a well-marked mucous pore. The sides, labia like, 

 of the poi^ are prominent and swollen. The pore opens and shuts, 

 and freely exudes mucus. 



