CYCLOPHORID®. 185 
coloured, girdled sometimes with interrupted reddish-brown 
lines; spire elongate, with the apex rather blunt, for the most 
part not truncated; suture with very crowded, minute, sharp 
teeth; whorls 7, moderately convex, the last not detached, 
marked round the perforation with a few spiral ridges; aperture 
perpendicular, elliptically ovate, shining within; peristome con- 
tinuous, simple, very narrowly expanded on all sides, produced 
above into an angulated auricula. Operculum typical. Length 
17, breadth 7 mill. 
Cistula Riisei, Pfr. Mon. Preum. p. 417, n. 4380a. 
Hab. Porto Rico (Riise). 
7. CistuLA ? GRIFFITHIANA. 
Shell ovate-conic, much elongated, with four to six spiral fre- 
quently-interrupted lines of dark brown, on a ground of very 
pale reddish-brown between, and whitish on the summits of, 
the transverse ridges; with crowded fine transverse raised lines ; 
anteriorly with feeble concentric striz ; spire rather long, with the 
outlines moderately curvilinear; apex truncate; whorls re- 
maining 5, convex, with a well-impressed suture; aperture 
ovate, rather acute above; peritreme simple, moderately ex- 
panded and reflected, minutely auriculate above; umbilicus 
small. Mean divergence about 30°; length 0.55, greatest 
breadth 0.28, least br. 0.25 inch. 
Cyclostoma Griffithianum, Adams, Contrib. to Conch. n. 6, p. 93. 
Cistula? Griffithiana, Pfr. Consp. n. 386; Pnrewm. Mon. p. 264. 
Hab. Jamaica. 
§ 3. Shell ovate, or oblong-turreted, last whorl not detached ; peri- 
stome double; outer edge dilated. 
8. CistuLA GRUNERI. 
Shell perforate, ovate-oblong, truncate, very thin, crowdedly and 
minutely striated spirally, decussated, under a lens, with very 
close longitudinal strie, pale horn-coloured; whorls remaining 
4, convex, the last one marked with an interrupted brownish 
band below the periphery, spotted with brown near the open 
perforation; suture middle, rather simple; aperture subovate ; 
peristome double; inner edge straight, sharply prominent, 
outer edge broad, rather concave, interrupted on the penulti- 
mate whorl, crowdedly and radiatingly striated on both sides. 
Operculum typical. Length 21, breadth 11 mill. 
Cyclostoma Gruneri, Pfr. in Z. f. Mf. 1846, p. 47; Ic. n. 73, p. 79, 
t. 10, f. 28, 29, 
Cistula Gruneri, Gray, Cat. Cycl. p. 59, n.11; Pfr. Consp. n. 387 ; 
Pneum. Mon. p. 264, it be e 
Hab. Honduras. 
R 2 
