CYCLOPHORIDA. 143 
gular bands; spire turbinate, rather pointed; whorls 5, convex, 
_ the last one more distinctly keeled on the periphery, scarcely 
convex beneath; umbilicus middle-sized, pervious; aperture 
little oblique, fulvid-grayish within; peristome white, thin, 
expanded, shortly interrupted on the penultimate whorl. Height 
12, greatest breadth, 143, least br. 12 mill. 
Cyclostoma Kraussianum, Pfr. in Proc. Z. S. 1851; Jc. n. 347, 
t. 43, f. 17, 18. 
Cyclostomus Kraussianus, Pfr. Consp. n. 297, p. 62; Pneum. Mon. 
p. 204. 
fab. Natal, South Africa. 
24, CYCLOSTOMUS CASTANEUS. 
Shell globose-conical, thin, obliquely slightly striate and sculp- 
tured with numerous rather sharp spiral ridges, shining, dark 
chestnut-coloured ; spire raised conical, rather blunt ; whorls 45, 
angularly convex, the last one beset with six nearly equal 
ridges, and with a greater number of very crowded spiral striz 
within the narrow umbilicus; aperture little oblique, nearly 
circular; peristome simple, thin, with both margins expanded, 
approximate, not united. Height 9, greatest breadth 11, least 
br. 9 mill. 
Cyclostoma castaneum, Pfr. in Proc. Z. S. 1851; Jc. n. 337, t. 42, 
f. 25, 26. 
Cyclostomus castaneus, Pfr. Consp. n. 298, p.63; Pneum. Mon. 
p. 204. 
Hab. Madagascar. 
25. CYCLOSTOMUS FUSCULUS. 
Shell globose-conical, thin, sculptured with rather numerous raised 
spiral lines, and with a single stronger, keel-like, peripherical 
ridge, scarcely shining, uniformly fuscous, with one narrow 
reddish-brown band below the pale keel; spire conical, rather 
blunt; whorls 5, convex, the last one girdled sometimes with a 
second keel above, minutely grooved spirally beneath ; umbilicus 
extremely narrow; aperture little oblique, roundish-ovate ; 
peristome simple, thin, with both margins slightly expanded, 
approximate, not joined. Height 9, greatest breadth 115, least 
br. 92 mill. 
Cyclostoma fusculum, Pfr. in Proc. Z. 8.1851; Ic. n. 336, t. 42, 
f, 23, 24. 
Cyclostomus fusculus, Pfr. Consp. n. 299, p. 63; Pneum. Mon. 
p, 205. 
Locality unknown. 
