70 CATALOGUE OF PHANEROPNEUMONA. 
Cyclophorus annulatus, Pfr. in Z. f. I. 1847, p. 108, n. 33 ; Consp. 
n. 142; Gray, Cat. Cycl. p. 22, n. 32; Pfr. Preum. Mon. p. 98. 
8 Larger; height 8, greatest breadth 234, least br. 19 mill. (Pfr. 
Te. t. 29, f. 14, 15.) 
Cyclostoma discus, Sowerby, ILSS. olim. 
Hab. Ceylon (Dr. Hoffmeister). 
82. CycLOPHORUS RAVIDUS. 
Shell nearly discoidal, slightly shining, coarsely sculptured with 
crowded, slight, radiating strive, white, covered with an oliva- 
ceous-yellowish periostraca; spire scarcely raised, with the apex 
flattened, blunt ; suture impressed; whorls 4, moderately con- 
vex, enlarging slowly, the last one cylindrical, scarcely descend- 
ing anteriorly, obsoletely spirally striate above near the suture; 
umbilicus wide, open; aperture oblique, circular; peristome 
thin, straight, with the margins joined by a thin deposit. Oper- 
(Bone: horny. Height 7, greatest breadth 15, least br. 13 mill. 
ens.) 
Cyclostoma ravidum, Bens. in Ann. and Mag. 2nd ser. viii. 1851, 
p. 190; Pfr. Lc. n. 417, t. 50, f. 14-16. 
Cyclophorus ravidus, Pfr. Consp. n. 143; Pneum. Mon. p. 99. 
Hab. 8. India, the summits of the Neilgherries (Jerdon). 
83. CycLopHoRuUS? DISCULUS. 
Shell depressed, discoidal, rather solid, shining, alabaster-white ; 
spire quite flattened; whorls scarcely 4, moderately convex, 
striate near the impressed suture, the last one rather cylin- 
drical, slightly depressed, more distinctly striate in the wide 
umbilicus, very shortly detached anteriorly; aperture nearly 
perpendicular, circular; peristome continuous, simple, straight. 
Operculum? Height 5, greatest breadth 14, least br. 11 mill. 
Cyclostoma disculus, Pfr. in Proc. Z. S. 1851; Jc. n. 294, t. 39, 
f. 11-13. 
Cyclophorus? disculus, Pfr. Consp. n. 144, p. 56; Pneum. Mon. 
p. 99. 
Locality unknown. 
84. CyctopHorus PH#NoTOPICUS. 
Shell depressed, nearly discoidal, thin, not shining, sculptured 
with coarse, sharp, radiating raised lines, and decussated near 
the suture, with impressed spiral striz, which are scarcely per- 
ceptible under a lens; colour reddish-brown, with angular, in- 
terrupted streaks; spire depressed, with the apex prominent; 
suture impressed ; whorls 45, convex, enlarging gradually; um- 
