THE CYCLOPHOEJID LAND MOLLUSKS OF AMlEKIOA 11 



rounded, marked by closely spaced, very slender, almost hairlike, re- 

 tractively curved axial riblets. Suture well marked. Periphery 

 rounded. Base moderately long, quite openly umbilicated in F. (F.) 

 camagueyanum mayajiguense^ a little less so in F. (F.) camagueyanum 

 camagueyanum^ and even less so in F. (F.) camagueyanum -floTencia- 

 niem, in which the umbilicus is for the greater part concealed. Aper- 

 ture subcircular; peristome much thickened on the outer, basal, and 

 inner lip, and reflected ; the posterior edge of the reflected peristome 

 is sharp. The thickened peristome of the inner lip does not quite 

 reach the preceding turn, but leaves a conspicuous gap. The peristome 

 of the parietal wall is not thickened. Operculum typically f arcimenid. 



This species ranges through the north and northwestern portion 

 of the Sierra Cubitas and extends to the Jatibonico. 



We are recognizing three subspecies, which the following key and 

 descriptions will help to differentiate : 



KEY TO THE SUBSPECIES OF FARCIMEN (FARCIMEN) CAMAGUEYANUM 



Umbilicus ratlier broad mayajiguense 



Umbilicus not broad. 



Shell large, height more than 27 mm camagueyanum 



Shell smaller, height less than 25 mm florencianum 



FARCIMEN (FARCIMEN) CAMAGUEYANUM MAYAJIGUENSE, new subspecies 



Plate 2, Figubes 28-30 



We have this race from a number of stations, namely, the north 

 slope of the Sierra de Jatibonico, Veredas de los Broqueles, del 

 Chorreron y del Alunado, Sierra de Matahambre, and Sierra de 

 Canoa, Mayajigua, Santa Clara Province. 



This race has a quite regular convex outline with the early whorls 

 pale olive and the last one much darker, not infrequently purplish. 

 Its chief distinction, however, lies in the fact that the umbilicus is 

 more widely open than in any other race and the bounding keel very 

 conspicuous. 



The type, U.S.N.M. No. 535892, comes from the north slope of the 

 Sierra de Jatibonico at Los Broqueles. Having lost the extreme 

 tip, the remaining 6.3 whorls measure: Height, 24.5 mm.; greater 

 diameter, 12.3 mm. 



FARCIMEN (FARCIMEN) CAMAGUEYANUM CAMAGUEYANUM. new subspecies 



Plate 2, Figures 25-27 



This race comes chiefly from the Cubitas Mountains, Camagiiey 

 Province. Bartsch collected it at Los Corrales de los Cangilones and 

 at Finca Los Cangilones. Both of these stations are at the foothills 

 of the Cubitas Mountains. In the mountains it was obtained at 



