ANOMA. 27 



14. A. ALBOANFRACTUS (Chitty). PL 19, figs. 41, 42. 



Small, but stout in figure; smooth and glossy, the latter 

 part of the last whorl densely, finely striate; pale yellow, 

 fading to opaque-white on the last half or more of the last 

 whorl. Keel distinct but low. Aperture oblique; peristome 

 but little thickened and slightly retracted at the ends. Colu- 

 mella strongly truncate in most individuals. Length 14.5, 

 diam. 4.8 to 5.2 mm., whorls 7y 2 to 8. Chitty 's type meas- 

 ured .62 x .22 inch. Habitat unknown, perhaps Northside, 

 according to Chitty. 



C. m. var. alboanfractus CHITTY, Contrib., p. 8 (Oct., 1853). 



Like concinna, but without bands or streaks, and with the 

 peristome sinuous. It differs from paivana chiefly in the 

 opaque-white last whorl. 



14a. Var. bicolor (Chitty). 



: ' Shell short and robust. Lip and penult whorl white, 

 gradually growing into a pure rich yellow to the truncate 

 apex; very shining, with lines of growth only perceptible 

 under a strong Jens. Whorls 6, Length .6, greatest breadth 

 .24 (15x6 mm.). One is longer, 7y 2 whorls, length .64, 

 breadth .21 " (16x5.25 mm.). (Cyl. m. var. bicolor Chitty, 

 Contrib., p. 10.) 



Habitat unknown. It seems, from the description, to be 

 near alboanfractus and paivana, if, indeed, it is not identical 

 with the latter. 



146. Var. paivana (Pfeiffer). PL 12, figs. 58-62. 



' <l Shell subperf orate, obese- fusiform, broadly truncate, 

 rather solid, smooth, glossy, waxen whitish. Spire swollen 

 below the middle, obese ; 7 whorls remaining, the upper ones 

 flat, lower a little convex, the last whorl narrower, somewhat 

 acutely thread-keeled at base. Aperture slightly oblique, 

 oblong; columella with a tooth-like fold within; peristome 

 white, reflexed, the ends joined by a thin callous, right margin 

 sinuous, columellar margin somewhat toothed, angular out- 

 wardly, below the insertion. Length 13.5 to 14.5, diam. 5.5 

 mm." (Pfr.). 



Jamaica. 



