EASTERN PROVINCE — SOUTHERN REGION SPECIES. 353 



This is i)r(>babl.y the species described many years ago by Mr. Say 

 as Helix luruhrata, from Mexico. Specimens so labeled by one of the 

 earliest curators of conchology at the Philadelphia Academy of Nat- 

 ural Sciences agree perfectly with specimens of caducus received from 

 Dr. PfeifFer. Should 1 prove correct in my judgment, Say's name will 

 take priority. 



Zoiiites 4'ei'inoideiis, Anthony. 



Shell perforated, globosely flattened, shining, light horn-color, 

 scarcely wrinkled by lines of growth ; whorls 7, hardly con- fig. asi. 

 vex, the last slightly inflated below ; aperture oblique, sub- 

 circular; ])eristome simple, acute, its ends joined by a light 

 callus. Greater diameter 7, lesser G"'" ; height, 3°™. 



Helix, cerinoidea, Anthony, Am. Journ. Conch , i, 351, pi. xxv, fig. 4 (Oc- 

 tober, 1865). 

 Meeomphix cerinoidea, Tryon, Am. Jouni. Couch., ii, 255, pi. iv, fig. 3fi noideus. 



(1866). 

 Hyalina cerinoidea, \V. G. Binney, L. & Fr.-W. Sh., i, 30, fig. 30 (1869). 

 Zonites cerinoideufi, W. G. Binney, Terr. Moll., v. 111. 



Jacksonville, Fla.; Charleston, S. C; Newberne, N. C; Norfolk, Va. 

 It may be a species of the Florida Subregion, thence ranging northward 

 along the Atlantic coast. 



The specimen figured was loaned by Mr. Anthony. 



Animal with mucus pore, longitudinal furrows, and locomotive disk 

 characteristic of the genus. 



Jaw as usual in the genus. 



Lingual membrane with 34-1-34 teeth; 9 perfect laterals (Terr. Moll., 

 Y, J^late III, Fig. B). 



Genitalia with dart and sac as in Z. Ugerus. 



Zonites Oimdlaclii. Pfeiffer. 



Shell perforated, depressed-conic, rather solid, pale rusty-brown, 

 striated with numerous faint lines of growth ; si)ire ele- fig. 382. 

 vated, having about five closely revolving, well-rounded 

 whorls, separated by a very deep suture; periphery 

 rounded ; base convexly rounded and excavated around 

 a small, deep perforation; aperture nearly circular, inter- 

 rupted for a short space by the penultimate whorl ; peri- 

 stome simple, slightly expanded, and at the columellar re- 7.. oundiachi. 

 gion decidedly reflexed. Greater diameter 2A, lesser 2J""'; height, 



1749— Bull. 28 23 



