188 CATALOGUE OF PHANEROPNEUMONA. 
Cyclostoma truncatum, Pfr. in Z. f. I. 1847, p. 105; Je. n. 121, 
p. 118, t. 14, f. 20, 21. “(Not Wiegm.) 
Cistula truncata, Gray, Cat. Cycl. p. 58, n. 7. 
Cistula Candeana, Pfr. Consp. n. 392; Pneum. Mon. p. 267. 
Hab. Cuba, frequent near Matanzas. 
14. CistunA? PAUPERATA. 
Shell very elongate and slender, conic; colour . . .? very coarsely 
striated transversely, not crenulated in the suture, spiral lines 
wanting ; spire with nearly rectilinear outlines; apex truncate, 
with the loss of 3 (7?) whorls; 5 whorls remaining, with a mo- 
derately-impressed suture; aperture ovate-orbicular; inner pe- 
ritreme on the right side less elevated above the outer one, 
which is moderately expanded, concave, sharp, produced into 
an angie and inflected at each extremity of the right side; um- 
bilicus very small, concealed by the lip. Mean divergence 
28°; length 0.58, greatest breadth 0.26, least br. 0.2 inch. 
Cyclostoma pauperatum, Adams, Contrib. to Conch. p. 13. 
Cistula? pauperata, Pfr. Consp. n. 393; Pneum. Mon. p. 267. 
fab. Jamaica. 
15. CistuLA? BILABRIS. B. M. 
Shell subimperforate, ovate-oblong, truncate, solid, sharply decus- 
sated by longitudinal and spiral raised lines, whitish or fulvous; 
whorls remaining 4-5, moderately convex, the last marked 
beneath with stronger spiral furrows; aperture perpendicular, 
obliquely ovate; peristome double; inner edge shortly promi- 
nent; outer edge thickened, spreading narrowly, angulated 
above, white or blackish-fuscous. Length 103-134 mill., breadth 
53-65 mill. 
Cyclostoma bilabre, Menke, Moll. Nov. Holl. p.8,n.18; Pfr. Lc. 
n. 45, p. 52, t. 6, f. 22, 23. 
Cyclostoma rufilabrum, Leck, ISS. ex Sow. Thes. n. 45, p. 106, 
t.24, f.61; Pot. & Mich. Gal. i. p. 241, t. 24, f. 20, 212 
Cistula rufilabris, Gray, Cat. Cycl. p. 59, n. 9. 
Cistula? bilabris, Pfr. Consp. n. 394; Pneum. Mon. p. 268. 
Hab. New Holland? (Menke); St. Croix? (Beck, Sowerby). 
§ 5. Shell ovate or oblong-turreted; last whorl detached in front; 
peristome rather simple. 
16. CistuLaA? LUGUBRIS. 
Shell perforate, turreted-oblong, solid, truncate, sculptured with 
blunt spiral ridges and rather lamellar longitudinal ribs going 
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