116 CATALOGUH OF PHANEROPNEUMONA. 
whorls remaining 4-44, convex, the last furnished near the 
suture and round the middle-sized, rather compressed, not 
pervious umbilicus, with several stronger spiral ridges; aper- 
ture nearly perpendicular, with the base slightly produced, 
rather circular ; peristome double; inner edge scarcely promi- 
nent, slightly expanded ; outer edge broadly expanded, emar- 
ginate on the penultimate whorl, rather concave and concen- 
trically striate anteriorly, dilated and auriculate above. Oper- 
culum typical. Length 21, breadth 14 mill. 
Cyclostoma lima, Adams, in Proc. Bost. Soc. 1845, p. 11; Pfr. in 
Z.f. M. 1846, p. 46; Jc. n. 35, p. 44, t. 6, f. 3-6; Sow. Thes. 
Suppl. n. 197, p. 167%, t. 31, B. f. 324, 325. 
Choanopoma lima, Pfr. in Z. f. M. 1847, p. 107, n. 2; Gray, Cat. 
Cycl. p. 50, n. 55 Pfr. Consp. n. 238; Pneum. Mon. p. 165. 
8. A little smaller, fulvous, with the concentrical lines more 
minute. 
Cyclostoma Blandianum, Adams, Contrib. to Conch. p. 3. 
Hab, Jamaica. 
17. GHOANOPOMA LINCINELLUM. 
Shell rimate-perforate, compressedly conical, thin, sculptured 
with very crowded longitudinal strize, crossed by obsolete spiral 
lines, which are more distinct on the lower part, silk-shining, 
grayish-fulyous, painted obsoletely with interrupted brownish 
bands; spire conical, often truncate; whorls 5, rounded, the 
Jast one protracted horizontally, rather compressed laterally, 
detached anteriorly; aperture perpendicular, circular; peri- 
stome free, continuous, double; inner edge sharp, shortly pro- 
minent ; outer edge shortly expanded into the plane of the 
aperture, rather equally broad all round. Operculum with the 
outer margin of the whorls moderately raised. Height 12, 
greatest breadth 14, least br. 10 mill. 
Cyclostoma lincinella, Lam. Hist. vi. p. 148, n. 22; Hd. Desh. viii. 
p. 359, n. 21; Pfr. Ic. n. 164, p. 153, t. 21, f. 3-5. 
Cyclostoma lincina, Lam. Hncyel. Méth. t. 461, f. 2. 
Cyclostoma compressum, Gray, 12 Wood Suppl. p. 36. 
Cyclostoma lincinellum, Sow. Thes. n. 137, p. 140, t. 28, f. 150, 
151. 
Turbo compressus, Wood, Ind. Suppl. t. 6, f. 42. 
Cyclophora lincina, Swazns. Malac. p. 336. 
Choanopoma lincinella, Pfr. in Z. f. M. 1847, p. 107, n. 4. 
Choanopoma lincinellum, Gray, Cat. Cyel. p. 54, n. 28; Pfr. Consp. 
n. 239; Pneum. Mon. p. 165. 
Hab. Jamaica? (Humphrey, Sowerby) ; Haiti. 
