SPIKAXIS. 39 



one and one-half smooth whorls: spire much elongated, with 

 the outlines moderately curvilinear: whorls about 6!/o, mod- 

 erately convex, with a well impressed suture : aperture long, 

 ovate, quite narrow and acute above ; columella little twisted, 

 scarcely truncate. This species closely resembles A. propin- 

 qua, but the strige are finer and more distant, and the out- 

 lines of the spire are more curvilinear. It attains about one- 

 half of the size of that shell. Mean divergence about 21 ; 

 length .33 inch; breadth .09 inch; length o*f aperture .12 

 inch." (Adams}. 



Jamaica. 



Achatina perplexa C. B. A., Contrib.'to Conch, no. 5, p. 

 84 (1850). PFR. Monogr. iii, p. 492. Oleacina perplexa Ad., 

 PFE., Nomencl. Hel. Viv. 1878, p. 7, no. 36. TRYON, Man. 

 of Conch, i, p. 31, pi. 3, f. 27 (1885). 



This 1 species differs from S. Icuviitaculus chiefly by its larger 

 dimensions. The impressed lines or grooves are rather nu- 

 merous on the spire but become irregularly and widely spaced 

 on the last Whorl. The reddish streaks become much di- 

 luted, hardly noticeable, in some specimens. There is some 

 variation in shape among the series of nine shells in the 

 Adams collection, as may be seen by measurements of the 

 largest and the widest individuals : 



Length 10.9, diam. 2.7, aperture 3.3 mm., whorls 7. 



Length 8.2, diam. 2.5, aperture 3.1 mm., Whorls 6. 



39. S. ANN^ Pilsbry, n. sp. PI. 3, fig. 32. 



Shell fusiform-ovate, whitish corneous with irregularly 

 spaced streaks of pale chestnut. Surface glossy, marked with 

 a few widely and unequally spaced longitudinal grooves; the 

 first 2!/4 whorls without, grooves, apex rather obtuse. Whorls 

 51/0, slightly convex. Aperture acuminately ovate, the outer 

 lip arched forward above the middle, basal margin retracted, 

 columella cord-like, only quite weakly spiral. Length 5.35, 

 diam. 1.8, aperture 2.35 mm. 



Jamaica: St. Ann's (J. B. Henderson). 



This species is much stouter in figure than S. l&viusculus 

 and its allies, and the early whorls are far smaller than the 



