CYCLOPHORIDZ. 175 
one distinctly spirally grooved beneath, detached anteriorly, 
sharply keeled above; aperture rather oblique, ovate; peri- 
stome continuous, shortly expanded, with the margins united 
into an acutely-prominent angle. Operculum slightly grooved 
obliquely. Length 133, breadth 7 mill. 
Cyclostoma pupiforme, Sow. Thes. n. 34, p. 102, t. 24, f. 43, 44 ; 
Pfr. Ic. n. 124, p. 121, t. 14, f. 15, 16. 
Cistula pupiformis, Gray, Cat. Cycl. p. 59, n. 13. 
Tudora pupzeformis, Pfr. Consp. n. 365; Pneum. Mon. p. 249. 
Hab. Haiti ? 
This might be considered as a variety of the preceding species. 
§ 2. Peristome indistinctly doubled. 
12. TUDORA COLUMNA. . B. M. 
Shell subrimate, oblong-conie, rather thin, crowdedly folded longi- 
tudinally, whitish-yellow, with three series of roundish chest- 
nut-coloured spots; suture densely denticulated; whorls re- 
maining 5-6, moderately convex, the last painted with five 
interrupted bands; aperture perpendicular, obliquely elliptical, 
receding on the side of the columella; peristome indistinctly 
double ; inner edge continuous, incumbent; outer edge dilated, 
expanded, broadly cut out on the penultimate whorl, with a 
hollow auricula above and on the left side. Operculum typical. 
Length 20, breadth 8 mill. 
Turbo columna, Gray, in Wood, Ind. Suppl. t. 6, f. 21. 
. Cyclostoma columna, Gray, in Wood Suppl. p. 36; Désh. in 
Lam. Hist. viil. p. 372, n. 41; Pfr. Lc. n. 39, p. 47, t. 6, f. 13, 14, 
t. 46, £, 27, 28. 
Cyclostoma quinquefasciatum, Adams, Contrib. to Conch. nu. 1, 
p. 2. 
Cistula columna, Gray, Cat. Cycl. p. 57, n. 2. 
Tudora columna, Pfr. Consp. n. 366; Pneum. Mon. p. 250. 
Hab. Jamaica, 
13. Tupora ? ADAMSI. B. M. 
Shell perforate, oblong-conic, truncate, thin, rather diaphanous, 
very closely folded longitudinally, pale horn-coloured, irregularly 
aspersed with and often marked with a single basal band of 
chestnut-colour; suture crowdedly crenulate; whorls remaining 
5-6, moderately convex, increasing rapidly; aperture perpen- 
dicular, obliquely ovate, of the same colour within; peristome 
indistinctly double; imner edge sometimes wanting; outer edge 
shortly afhxed, expanded, angulated above, very narrow below 
the perforation. Length 15, breadth 7 mill. 
