196 CATALOGUE OF PHANEROPNEUMONA. 
Cistula scabrosa, Humphr. MSS. fide Sow.; Pfr. Consp. nu. 412; 
Pneum. Mon. p. 277. 
Cyclostoma rugulosum, Sow. Thes. n. 155, p. 146, t. 28, f. 166, 167. 
(Not Pfr. nor Sow. in Proc. 1843.) 
Choanopoma scabrosum, Gray, Cat. Cycl. p. 51, n. 12. 
Hab. Providence Island (Sowerby), Jamaica (Gray). 
35. CISTULA CINCLIDODES. 
Shell subimperforate, ovate-oblong, truncate, solid, sculptured with 
raised spiral and somewhat more crowded longitudinal lines, 
forming knots at their points of junction, opaque, fulvous or 
grayish-white, with a few interrupted reddish-brown lines ; 
suture crenated, with the teeth fascicled; whorls remaining 5, 
moderately convex, last shortly detached anteriorly, more dis- 
tinctly spirally grooved beneath; aperture scarcely oblique, 
angularly ovate; peristome white, double; inner edge produced, 
outer edge spreading very narrowly, waved, angularly produced 
above. Operculum typical. Length 11, breadth 5 mill. 
Cyclostoma cinclidodes, Pfr. Proc. Z. S. 1852; Ic. n. 394, t. 47, 
f. 25, 26. 
Cistula cinclidodes, Pfr. Pueum. Mon. p. 277. 
Hab. Haiti (Sallé). 
XXV. CHONDROPOMA. 
Operculum ovate, subcartilaginous, flat; whorls few, rapidly in- 
creasing, with the nucleus very excentric. Shell’ oblong-tur- 
reted, often truncated, sometimes globose-turbinated; aperture 
ovate ; peristome simple or more or less distinctly doubled, 
nearly straight, expanded or broadly reflexed. 
Chondropoma, Pfr. in Z. f. M. 1847, p. 109; 1851, p. 72; Consp. 
p. 44; Pneum. Mon’. p. 278; Gray, "Cat. C3 vel. p- 55. 
Cyclostoma sp., Auct. 
A. Peristome simple. 
Las Wise 
a. Broadly expanded : 
6. Shortly or scarcely expanded 
2. Rather thickened, narrow . 
B. Peristome indistinctly doubled . 
C. Peristome double. 
1. Umbilicus open. 
a. Outer edge narrow. i 
OD Organon 
ea A 
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bo 
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oO 
6. Outer edge broadly spreading 
2. Umbilicus rather closed 
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