40 CATALOGUE OF PHANEROPNEUMONA. 
Cyclostoma involvolus, Gray, in Mus. Brit.; Bens. in Zool. Journ. 
v. p. 462; Sow. Thes. n. 82, p. 119, t. 26, f. 114-116; Conch. 
Man. £. 304; Pfr. Ic. n. 20, p. 28, t. 4, f. 3, 4. 
Cyclophora involvula, Swains. Malac. p. 336. 
Cyclophorus involvulus, Pfr. in Z. f. WM. 1847, p. 108; Consp. n. 72 ; 
Gray, Cat. Cycl. p. 17.0.8; Pfr. Pneum. Mon. p. 59. 
Seba, Thes. iii. t. 40, f. 18, 19. 
Laster, Hist. t.'75, f. 75. 
fab. India; common from Sicrigully, Bahar, Patharghata. 
Note. This shell is found sometimes with a sharp peripherical 
keel; also with a compressed keel and a large channel near 
the suture. 
9. CYCLOPHORUS PICTURATUS. 
Shell turbinate-depressed, solid, rather smooth, whitish, painted 
with chestnut-coloured reticulate stripes and flames; spire 
shortly conoidal, with the apex blunt; whorls 43, moderately 
convex, the last one furnished above with several obtuse spiral 
ribs, painted with a denticulated band below the periphery, 
white around the umbilicus, which is middle-sized, deep ; aper- 
ture slightly oblique, rather circular ; peristome rather simple, 
thickened, very much protracted, continuous, shortly affixed, 
with the columellar margin dilated, expanded. Opere.? Height 
16, greatest breadth 29, least br. 23 mill. 
Cyclostoma picturatum, Pfr.in Proc. Z. 8.1851; Ice. n, 363, t, 45, 
f.13, 14, 
Cyclophorus picturatus, Pfr. Consp. n. 73, p. 51; Pneum. Mon. 
p- 61. 
Locality unknown. 
10. CycLhopHorus IBYATENSIS. 
Shell turbinate-depressed, solid, smooth, slightly striate, shining, 
chestnut-coloured, marked with white spots and bands; spire 
turbinate, with the apex rather pointed, horn-coloured ; whorls 5, 
moderately convex, the last one somewhat depressed near the 
suture, painted with large square or triangular white spots, 
very obsoletely angulated at the periphery, white around the 
middle-sized funnel-shaped umbilicus ; aperture little oblique, 
nearly circular; peristome somewhat thickened, expanded, with 
the margins approaching each other, joined by a continuous 
callus. Operc.? Height 14, greatest breadth 23, least br. 18 
mill. 
Cyclostoma Ibyatense, Pfr. in Proc. Z. 8.1851; Jc. n. 366, t. 45, 
f. 19, 20. 
Cyclophorus Ibyatensis, Pfr. Consp. n. 74, p. 51; Pneum. Mon. 
p. 61. 
Hab. The Island of Ibyat, Bashee group. 
