416 



A MANUAL OP iiMERICAN LAND SHELLS. 



Fig. 457. 



attained by the more common gliding motion of the Helices. During 



motion the eye-peduncles are extended and remain steadily in one 



position. 



They are found in woods, on the ground, under leaves, but are not 



very plentiful. The most northern point where 



they have hitherto been noticed is Tampa. On 



the eastern shore of the j^eninsula they occur at 



Cape Florida and Key Biscayne. 



There is considerable confusion regarding the 



identity of this species. Pfeift'er (in Vol. VI) 



and Fischer and Crosse (Moll. Mex. et Guat.) 



consider pontijicus as distinct from Kiencri. A figure of the latter is 



here given, drawn from types in Dr. Pfeifter's collection from Honduras. 



Jaw and lingual membrane and genitalia not observed. 



MacroCernmiix Kiencri. 

 (I'lcifler.) 



ITIaci'Occi'aniiis Oossei, Pfeiffer. 



Shell rimate, turrito-cyliudrical, obliquely ribbed, white, opaque, 

 Fig. 458. with semilunar blotches and pellucid, horn- 



colored spots ; spire cylindraceous, apex attenu- 

 ated and acute ; suture crenulated ; whorls 11, 

 convex, the last about one-fourth the length of 

 the shell, rounded, subaugulateatbase; aperture 

 subcircular ; peristome briefly expanded, with 

 M. Gossei. approHching termini, tlie columellar expansively 



reflected. Length, ll"^'"; diameter, 3f "'"'; aperture, 3^™™ long, Si™'" 

 broad. 



Bulimus Gossei, Pfeiffer, Proc. Zool. Soc, 1845, 137 ; Mon. Hel, Viv., ii, 81 ; in Roe- 

 nier's Texas, 456.— Reeve, «fcc.— W. G. Binnev, Terr. Moll., iv, 135. 



CiiVinflreUa Ilydeajia, coiicisa, &c., see Pfeiffer. 



Macroceramus Gossei, Pfeiffer, Mon. Hel. Viv., iv, 689. — Tryon, Am. Journ. Conch., 

 iii, 302 (1868).— W. G. Binney, L.»t.Fr.-W. Sh., i, 22-2 (1869); Terr. Moll., 

 V, 380. 



Var. /?. Somewhat smaller, the spots and blotches more obsolete. 



A West Indian species, found also in the Texan Subregion and in the 

 Florida Subregion, at Little Sarasota Bay, near Charlotte Harbor, 

 Florida. 



Jaw and lingual dentition : see fig. 455. 



