CYCLOPHORIDA. 187 
striated concentrically, slightly indented on the penultimate 
whorl, with the left margin fringed and crenulate. Operculum 
typical, with the nucleus little excentrical. Length 14, breadth 
7 mill. 
Cyclostoma radula, Pfr. in Proc. Z. 8. 1851; Jc. n. 319, t. 41, 
3, 14. 
Cistula radula, Pfr. Consp. n. 390, p. 67; Pneum. Mon. p. 266. 
Hab. Almendares, near Havana (Morelet). 
§ 4. Shell ovate or oblong-turreted ; last whorls not detached ; peri- 
stome double, outer edge narrow. 
12. CistuLA? SAGITTIFERA. 
Shell elongate, ovate-conic, dingy-white, with numerous inequi- 
distant dark-brown zigzag lines, with the four angles, which are 
directed backwards, arranged in spiral series on stripes of paler 
brown ; with irregular transverse spots of dark brown next below 
the suture; with very crowded fine transverse ridges, which 
interrupt minute spiral elevated lines; apex truncate; spire 
rather long, with the outlines curvilinear ; whorls remaining 4, 
quite convex, with a well-impressed suture; aperture obliquely 
ovate, with two peritremes, of which the outer one is moderately 
produced and not reflected posteriorly, but in the rest part is 
well produced, reflected nearly into the plane of the aperture, 
sinuous on the left side anteriorly; inner peritreme thick, mo- 
derately produced, slightly reflected; umbilicus very narrow, 
extending through the truncate summit. Mean divergence 
about 45°; length 0.96, greatest breadth 0.63, least br. 0.55 inch. 
Cyclostoma sagittiferum, Adams, in Ann. Lyc. V. York, v. n. 2, 
p. 53; Contrib. to Conch. nu. 8, p. 137. 
Cistula? sagittifera, Pfr. Consp. n. 391; Pneum. Mon. p. 266. 
Hab. Jamaica, Easington (Mr. Chitty). 
13. CistuLA CANDEANA. 
Shell scarcely perforate, oblong-turreted, truncate, rather thin, 
closely trellised by sharply-raised longitudinal and spiral striz, 
fulvous, with reddish-brown stripes and interrupted bands ; suture 
marked with white crenulations; whorls remaining 5, convex, 
increasing regularly, the last one grooved beneath with stronger 
spiral striz; aperture perpendicular, obliquely ovate, peristome 
white, double; inner edge not prominent; outer edge conti- 
nuous, dilated, expanded, angulated above, a little narrower 
near the penultimate whorl. Operculum typical. Length 14, 
breadth 6 mill. 
Cyclostoma Candeana, Orbigny, Moll. Cub. i. p. 261, t. 22, f. 15-17. 
Cyclostoma Candeanum, Sow. Thes. n. 151, p. 145, t. 31, f. 283, 284. 
