52 HELICEA. 



Mighel's description of submeris is as follows. 



Shell conic-globose, smooth, incremental strise distinct, apex sub- 

 acute ; spire elevated, whorls 5^, suture distinct, epidermis dark chest- 

 nut or mahogany colored, mottled, with an interrupted white zone 

 around the body whorl ; convex beneath, umbilicus minute, the region 

 white ; lip simple, thickened within ; internal lip blending with the last 

 whorl, and, with the inner margin of the outer lip, of a beautiful rose 

 tint. Height 1^ inch; breadth the same; depth | inch. Hab. Key 

 West. Florida, 



Pfeiffer (1. c.) merely gives a Latin version of this de- 

 scription, never having seen the shell. 



HELIX EI.EVATA SAY vol. ii. p. 126, pi. iv. 



Helix elevala SAY, (Binney's ed.) p. 27, pi. 37, fig. 2. 



DEKAY, 1. c. p. 36, pi. iii. fig. 20. 



CHEMNITZ, ed. 2. i. 56, pi. vii. figs. 11, 12, (1846). 



CHENU, Bibl. Conch. 3, 50, pi. xiii. fig. 2. 



MRS. GRAY, Fig. Moll. An. pi. cxci. fig. 7, abs. desc. 



PFEIFFER, Symb. Hist. Hel. ii. 27; Mon. Hel. Viv. i. 217; iii. 270. 



REEVE, Con. Icon. No. 681, (1852). 



DESHAYES, in Fer. i. 329, pi. 1. c. 

 Helix Tennesseensis TROSCHEL, Ar. f. Nat. 1837, ii. 124. 



PFEIFFER, Mon. i. 149; iii. 120, (verba Leana). 

 LEA, Tr. Am. Phil. Soc. ix. p. 1. 



In the Boston Journal, this species is said to be also 

 Mesodon helicinum Rafinesque. I can find no description 

 of any such species. 



The species occurs fossil in the Postpleiocene. 



Mr. Robert Kennicott collected, in Wisconsin, two 

 specimens of a curious variety of this species, furnished 

 with a broad, revolving, brownish band on the body 

 whorl. 



I give below Lea's description of H. Tennesseensis. 

 There can be no doubt of its being the young of this 

 species. The authors referred to in the synonymy have 

 merely repeated this description, without having seen the 

 shell. 



