CYCLOPHORIDA. 15 
19. CycLoTUS VARIANS. 
Shell depressed, solid, pale-coloured, with a chestnut-brown perio- 
straca ; spire scarcely raised, with the apex reddish, minutely 
mucronate ; suture impressed ; whorls 4}, depressed convex; 
the two last ones covered with strong and oblique angular 
wrinkles; the last one depressed near the suture, more minutely 
and obliquely furrowed beneath, with a compressed angle around 
the broad, funnel-shaped umbilicus ; aperture a little oblique, 
nearly circular, reddish inside; peristome continued, very 
shortly affixed, with the margins joined into a simple angle; 
right margin slightly arcuate, sharp ; columellar margin strongly 
arcuate, reflected. Operc. scarcely concave, with a raised spiral 
lamella of about 8 whorls, the upper edges of which are re- 
flected and expanded so as to be nearly in contact. Height 11, 
greatest breadth 24, least br. 20 mill. 
Cyclostoma varians Adams, Contrib. to Conch. n. 8, p. 143-145 ; 
Pfr. Ic. n. 357, t. 44, f. 7-9. 
Cyclotus varians, Pfr. Consp. n. 19 ; Mon. p. 27. 
Hab. Jamaica. 
20. CycLoTUS SEMINUDUS. 
Shell brownish-orange, or brownish on the spire, reddish-white on 
the last whorl; with a brown epidermis, which on the last 
whorl is limited to two or three dark-brown, broad, well-defined 
spiral bands, which are often confluent in one ; with the trans- 
verse striz very fine ; wrinkles commencing about the middle 
of the penult whorl, mostly foveate ; last whorl very irregularly 
wrinkled above, minute white pits exterior to the well-developed 
umbilical keel, otherwise smooth; spire well elevated ; whorls 
nearly 5, with a slight depression at the top of the last whorl ; 
with the suture well impressed ; aperture suborbicular, quite 
effuse, and pointed above ; lip thick, a little sinuate above, and 
well advanced on the right side; umbilicus about three-quarters 
as wide as the aperture. Operculum quite concave, with the 
spiral lamella scarcely elevated, but much thickened and ap- 
pressed on the exterior side. Height 0.65, greatest breadth 
1 inch, least br. 0.79 inch. (A.) 
Cyclostoma seminudum, Adams, Contrib. to Conch. u. 8, p. 143, 146. 
Cyclotus seminudus, Pfr. Consp. nu. 20 ; Mon. p. 28. 
Hab. Jamaica, Manchester. 
21. CycLoTUS SUBRUGOSUS. 
Shell depressed, solid, with oblique foveate wrinkles, white ; spire 
scarcely raised, nipple-shaped ; whorls 42, moderately convex, 
the last one obsoletely angular at the periphery, disjoined ante- 
riorly from the penult one, deflected, angular above, obtuscly 
