. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 398 TERRESTRIAL AIR-BREATHING MOLLUSKS. Genitalia (PL XV. Fig. J) without accessory organs. The penis sac is long, cylindrical, tapering into a flagellum above, and receiving the vas deferens near its lower termination. The genital bladder is ovate on a long duct. Fig. 281. Bulimulus Marielinus, Poey. Shell imperforate, ovate-conic, thin, very minutely substriate, somewhat shin- ing, pellucid, white, varied above the middle by numerous sub- interrupted, reddish-chestnut bands; spire conic, somewhat acute ; whorls 5, s
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 398 TERRESTRIAL AIR-BREATHING MOLLUSKS. Genitalia (PL XV. Fig. J) without accessory organs. The penis sac is long, cylindrical, tapering into a flagellum above, and receiving the vas deferens near its lower termination. The genital bladder is ovate on a long duct. Fig. 281. Bulimulus Marielinus, Poey. Shell imperforate, ovate-conic, thin, very minutely substriate, somewhat shin- ing, pellucid, white, varied above the middle by numerous sub- interrupted, reddish-chestnut bands; spire conic, somewhat acute ; whorls 5, scarcely convex, the last about equalling the spire, sub- attenuated at buje; aperture scarcely oblique, subelliptical, nar- rowed at base; peristome simple, straight, its columellar termina- tion subreflected above, appressed. Length 16, diameter 8 mill.; of aperture, length 9, breadth in its centre 5 mill. Bulimics Marielinus, Poey, Memorias, I. 212, 447 ; II. PL XII. Figs. 32, 33 (young). — Pfeiffer, Mon. Hel. Viv., III. 407.— W. G'. Binney, L. & Sh., I. 193 (1869). Buli?nus (Lcptomerus) Marielinus, Tryon, Am. Journ. Conch., III. 174 (1867). A Cuban species, specimens of which were found by Dr. J. G. Cooper in the Florida Subregion in Southern Florida; one of them is drawn in Fig. 281. I have also received it from near the Miami River. The shell is very thin. It may readily be distinguished from B. Dormani. It is more cylindrical in outline, its bands of color are revolving, not longitu- dinal. Jaw short, broad, strongly arched above, moderately so below; ends attenu- ated, blunt; anterior surface with coarse longitudinal striae, and with rib-like processes, scarcely elevated, but denticulating the cutting edge. Lingual membrane not observed. Genitalia not observed. Fig. 282. Bulimulus Floridanus, Pfeiffer. Shell narrowly perforated, ovate-elongate, rather smooth, grayish-green, vari- egated with white opaque streaks and spots; spire elon- gate-conic, somewhat
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