CYCLOPHORID&. 137 
Tropidophora campanulata, Pfr. in Z. f. WM. 1847, p. 106, n. 8. 
Tropidophora tricarinata var., Gray, Cat. Cycl. p. 39. 
Cyclostomus campanulatus, Pfr. Consp. n. 283; Pneum. Mon. 
p. 194. 
Locality unknown. 
10. CycLosToMUS BICARINATUS. B. M. 
Shell globose-conical, rather thin, closely but faintly spirally 
grooved, bicarinated, brownish-gray; spire pyramidal, with the 
apex usually truncated; whorls 6, angulated, the last one 
girdled with two pale, acutely-raised keels, deeply spirally fur- 
rowed beneath; aperture rather vertical, nearly circular, shining 
blackish-blood-red within ; peristome simple, expanded, purplish- 
blood-red, with the margins nearly continuous, columellar mar- 
gin dilated above into a tongue-shaped, vaulted lamina, which 
nearly altogether closes the umbilicus. Length 35, breadth of 
the penultimate whorl 23 mill. 
Cyclostoma bicarinatum, Sow. Thes. n. 85, p. 120, t. 26, f. 121; 
Pfr. Ic. n. 147, p. 139, t. 19, f. 1-3; Désh. Trarté élém. Conch. 
t. 82, f. 1, 2. 
Tropidophora bicarinata, Pfr. in Z. f. Mf. 1847, p. 106, n. 9. 
Tropidophora tricarinata var., Gray, Cat. Cycl. p. 39. 
Cyclostomus bicarinatus, Pfr. Consp. n. 284; Pneum. Mon. p. 195. 
B. Smaller, with the umbilicus rather open; length 24, breadth 
17 mill. 
Hab. Madagascar. 
11. CycLosTomUS PULCHELLUS. B. M. 
Shell perforate, globose-turbinate, thin, minutely decussated by 
very crowded longitudinal and spiral strize, fulvid-flesh-coloured, 
with numerous interrupted bands of chestnut-colour; spire 
conical, pointed; whorls 5, convex, enlarging rapidly, the last 
two furnished with two to three rather sharp keels, the last 
one forming a funnel-shaped, narrow umbilicus, which is deeply 
and closely spirally grooved; aperture rather perpendicular, 
nearly circular; peristome sharp, with the margins angularly 
joined above, right margin broadly expanded, blood-red, left 
margin narrow, scolloped. Height 23, breadth 29 mill. 
Cyclostoma pulchellum, Sow. Thes. n. 109, p. 129; Pfr. Ic. n. 142, 
p- 135. 
-Tropidophora pulchella, Gray, Cat. Cycl. p. 40, n. 8. 
Cyclostomus pulchellus, Pfr. Consp. n. 285; Pnewm. Mon. p. 195. 
a. Adult, perfect: 
Cyclostoma Hanleyi, Pfr. in Z. f. Mf. 1847, p.58; Jc. n. 143, p. 136, 
t. 18, f. 9-11. | 
Tropidophora Hanleyi, Pfr. in Z. f. Mf. 1847, p. 106, n. 10. 
N 2 
