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 7% 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 lens. Whorls 6, o 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. 



14&. Var. paivana (Pfeiffer). PI. 12, figs. 58-62. 



" 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. 



