SPIRAXIS. 39 



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

 the 'outlines moderately curvilinear : whorls about 6%, 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 of aperture .12 

 inch. " (Adams). 



Jamaica. 



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

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

 PFR., Nomencl. Hel. Viv. 1878, p. 7, no. 36. TEYON, Man. 

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



This species differs from S. l&viiisculus 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,- dram. 2.7, aperture 3.3 mm., whorls 7. 



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



39. S. ANN.E 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 1 ; the 

 first 2^ Whorls without grooves, apex rather obtuse. Whorls 

 5%, 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 1 than 8. Iceviusculus 

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



