68 HELICEA. 



Living specimens sent me by Bishop Elliott present the 

 following characteristics : — 



Animal dirty white, neck darker, superior tentacles 

 black, — not quite twice the breadth of the shell, — foot 

 pointed. 



It has also been found at St. Simon's Isle, Ga. (Postell), 

 St. John's River and St. Augustine, Fla., (Dorman), and 

 in the cemeteries of Savannah. (Elliott.) 



The following is Say's description : — 



H. JEJUNA. — Shell subglobular, glabrous, pale reddish brown ; 

 volutions five, slightly wrinkled, regularly rounded ; spire convex ; 

 suture rather deeply impressed ; aperture dilate lunate ; labrum a 

 little incrassated within, not reflected ; umbilicus open, small. 



Breadth rather more than one fifth of an inch. Inhabits the 

 Southern States. 



Animal — light reddish brown, with a granular surface, longer 

 than the breadth of the shell ; oculiferous tentacula elongated, and 

 rather darker than the body. 



This shell is very closely allied to H. sericea of Southern Europe, 

 hut it differs from that species in being destitute of the hirsute 

 vesture. 1 found several specimens o^ jejuna, during an excursion 

 some time since into East Florida, at the Cow Fort on St. John's 

 lliver. It is in the collection of the Academy. 



HELIX INCRUSTATA Poey vol. ii. p. 174, pi. xxix. a, fig. 4. 



Helix incrusiata Poey, Memorias, vol. i. pp. 208, 212, pi. xii. figs. 11-16. 

 Pfeiffer, Mon. Hel. Viv. iii. 632. 



This shell is described by Gould under the name of 

 saxicola. It is, however, quite a distinct species. The 

 true saxicola is more nearly allied to chersina, and its 

 surface is bright and clean, the spire elevated, the general 

 outline more globose, and the umbilicus small, being also 

 slightly covered by the lip. 



I am indebted to Mr. Poey for specimens of the true 

 saxicola of Cuba, as well as of his incrusfata. A compari- 



