@ CATALOGUE OF PHANEROPNEUMONA. 
3. CycLOTUS CINGULATUS. 
Shell depressed, rather thick, olivaceous-chestnut-coloured, covered 
all over with irregular granulate wrinkles; spire very short, 
rather blunt ; whorls 44, moderately convex, rapidly increasing, 
the last one descending anteriorly, obtusely carinate at the 
periphery, with a broad blackish band beneath the keel ; um- 
bilicus moderately large ; aperture nearly circular, scarcely 
angulate above, blueish inside; peristome simple, straight, con- 
tinued; the right margin semicircular; the left margin a little 
thickened, slightly arcuate. Operculum typical. Height, 
19 mill., greatest breadth 35, least br. 27 mill. : 
Cyclostoma cingulatum, Sow. Thes. p. 93, n. 9, t. 29, f. 2138, 214; 
Pfr. Ie. p. 163, n. 176, t. 22, f. 20-22. 
Aperostoma cingulatum, Pfr. in Z. f. Mf. 1847; p. 104. 
Cyclotus cingulatus, Gray, Catal. Cycl. p.6; Pfr. Consp. n. 3 ; 
Mon. p. 18. 
Hab. New Granada (Powis), Columbia. 
4, CycLoTUS LAXATUS. 
Shell depressed, nearly discoidal, with an ear-shaped periphery, 
with crowded ribline striz and oblique impressed wrinkles ; 
colour fulvous-chestnut ; spire scarcely raised, with a red, 
blunt apex ; whorls 43, convex, rapidly increasing, the last one 
dilated anteriorly, slightly keeled at the periphery, with one 
band of blackish chestnut, more strongly folded and more 
minutely wrinkled beneath ; umbilicus very large ; aperture 
oblique, transversely subovate, inside pearl-grayish ; peristome 
simple, straight, continued, shortly affixed. Operc.? Height, 
13 mill., greatest breadth 36, least br. 27 mill. 
Cyclostoma laxatum, Sow. Thes. Suppl. p. 159*, n. 181, took 
A. f.302; Pfr. Ic. n. 245, t. 35, f. 3, 4. 
Cyclotus laxatus, Pfr. Consp. n. 4; Mon. p. 18. 
Hab. Columbia. 
5. CycLotus INCA. B. M. 
Shell depressed, rather solid, with crowded fold-like striz; 
greenish-horn coloured, with one broad chestnut-coloured band 
beneath the periphery ; spire scarcely raised ; apex generally 
red ; whorls 44, convex, rapidly increasing, the last one nearly 
cylindrical, scarcely descending anteriorly ; umbilicus broad ; 
aperture a little oblique, ovate-rounded, inside pearl-grayish ; 
peristome simple, straight, continued, shortly affixed to the 
penult whorl; the columellar margin regularly arcuate, rather 
thickened. Operculum typical, with about eight whorls. 
Height 13 mill., greatest breadth 27, least br. 22 mill. 
