94 CATALOGUE OF PHANEROPNEUMONA. 
Cyclotus variegatus, Swains. Malac. p. 336; Pfr. Consp. n. 43; 
Pneum. Mon. p. 39. 
Aperostoma planorbulum, Pfr. in Z. f. If. 1847, p. 104. 
Cyclotus planorbulus, Gray, Cat. Cycl. p. 8, 0. 14 (part). 
Hab. Philippine Islands (H. Cuming). 
43. Cyctotus TAYLORIANUS. 
Shell depressed, nearly discoidal, thin, minutely striate, scarcely 
shining, whitish, with very elegant chestnut-coloured angulated 
stripes, and a fulvous-horn-coloured periostraca ; spire nearly flat, 
with the apex horn-coloured, mucronate; suture deep ; whorls 
5, convex, the last one with two obsolete angles, each of which 
is furnished with a series of long black hairs, scarcely deflected 
anteriorly, bearing a small beak-like recurved spiraculum on 
the suture, at the distance of 4 mill. behind the peristome; um- 
bilicus very broad; aperture very oblique, nearly circular ; 
peristome rather duplicate; inner edge expanded, affixed, some- 
times indistinct; outer edge rather notched near the penult 
whorl; left margin shortly reflected; right margin broadly 
expanded; upper margin dilated, roof-like. Operculum like 
that of C. variegatus. Height 6, greatest breadth 17, least br. 
13 mill. 
Cyclostoma Taylorianum, Pfr. in Z. f. . 1851, p. 7; Je. n. 285, 
t. 38, f. 27-29, t. 43, f. 1-3. 
Cyclostoma Charbonnieri, fécher. in Journ. Conch. 1851, ii. p. 214, 
$b, t..12.45. 
Cyclotus Taylorianus, Pfr. Consp. nu. 32; Pnewm. Mon. p. 40. 
Hab. Borneo, Sarawak. 
Compare with Pterocyclos biciliatus, Mousson. 
44, CYcLOTUS ROSTELLATUS. 
Shell depressed, rather solid, slightly striate, horn-coloured, with 
fulminating chestnut stripes; spire very shortly turbinate, with 
the apex mucronate, black; whorls 43, convex, the last one 
descending anteriorly, bearing a beak-like recurved spiraculum 5 
mill. behind the peristome; umbilicus moderately broad; aper- 
ture very oblique, nearly circular; peristome double, reddish ; 
inner edge continued, a little expanded, affixed to the outer 
one, which is reflected into the plane of the aperture, very 
narrow below the penult whorl, shortly and convexly dilated 
above. Operc. typical. Height 5, greatest breadth 11, least 
br. 9 mill. 
Cyclostoma rostellatum, Pfr. in Z. f. M. 1851, p. 8; Jc. n. 286, t. 
38, f. 30-34. 
Cyclotus rostellatus, Pfr. Consp. nu. 44; Pnewm. Mon. p. 40. 
Hab. Singapore (Taylor). 
