CYCLOPHORID&. 293 
14. REALIA EXPANSILABRIS. 
Shell scarcely perforate, ovate-conic, thin, rather smooth, slightly 
shining, pale yellow, minutely marbled with horn-colour and 
girdled with one or two reddish-brown bands below the peri- 
phery ; spire elevated conic, rather pointed; whorls 6, scarcely 
convex, last with a thread-like keel in the middle and at the 
base; aperture oblique, ovate; peristome equally and narrowly 
expanded all round, white, with the margins rather distant. 
Length 53, breadth 3 mill. 
Cyclostoma expansilabre, Pfr. in Proc. Z S. 1851; Ic. n. 296, 
t. 39, f. 17-19. 
Omphalotropis expansilabris, Pfr. Consp. n. 464, p. 71; Pnewm. 
Mon. p. 312. 
Hab. The island Mauritius (Sir D. Barclay). 
XXIX. BOURCIERA. 
Operculum ovate, rather solid, horny, of a few rapidly-increasing 
whorls. Shell helicina-shaped; columella toothed beneath ; 
aperture ovate ; peristome spreading. 
Bourciera, Pfr. in Z.f. M. 1851, p.178; Consp. p. 49; Pneum. 
Mon. p. 312. 
1. BourcInraA HELICINZFORMIS. 
Shell with the umbilicus closed, conoidally-globose, rather solid, 
faintly striated, slightly shining, greenish-horn-coloured ; spire 
small, conoidal, rather pointed ; whorls 6, moderately convex, 
last ventricose, somewhat ascending anteriorly, deeply indented 
and callous behind the columella, which is rather perpendicular 
and terminates backwards in a sharp tooth; aperture nearly 
perpendicular, angularly ovate; peristome thickened, white, 
broadly expanded and slightly reflexed all round. Height 11, 
greatest breadth 174, least br. 13 mill. 
Cyclostoma heliciniforme, Pfr. in Proc. Z. S. 1851; Ic. n. 224, 
t. 32, f. 8-10. 
Bourciera helicineformis, Pfr. Consp. n. 465, p. 71; Pneum. Mon. 
p. 312. 
Hab. Yaraqui, Republic of the Equator (M. Bourcier). 
Doubtful Species of Cyclophoride. 
1. CYCcLOSTOMA CUSPIDATUM. 
Shell umbilicated, conoidal, acuminated, obliquely striated, marked 
with spiral lines; periostraca olivaceous-fuscous; spire elon- 
gated, slender, with the apex nipple-shaped; whorls 5, the first 
