CYCLOPHORID. 189 
across the ridges, fuscous, with a single broad violaceous- 
brownish band; spire scarcely tapering; suture crenated 
crowdedly and rather acutely with excurrent bundles of ribs; 
whorls remaining 5, moderately convex, the last shortly de- 
tached and descending anteriorly, compressed above, with more 
distant spiral ridges beneath; aperture perpendicular, obliquely 
ovate; peristome rather simple, continuous, with the left mar- 
gin shortly expanded, otherwise spreading more broadly and 
slightly waving. Operculum? Length 16, breadth almost 7 
mill. 
Cyclostoma lugubre, Pfr. in Proc. Z. S. 1851; Jc. n. 317, t. 41, 
f, 11, 12. 
Cistula? lugubris, Pfr. Consp. n. 395, p. 67; Pneum. Mon. p. 269. 
fab. Jamaica. 
17. CistuLaA? MORDAX. 
Shell subperforate, oblong-pupiform, thin, truncate, sculptured 
with distant blunt spiral ridges and crowded longitudinal striz 
going across the ridges, fuscous, painted with reddish-brown 
points and interrupted lines; suture indistinctly crenulate; 
whorls remaining 5, moderately convex, last narrower, shortly 
detached anteriorly; aperture perpendicular, obliquely ovate, 
slightly angulated above; peristome simple, very little ex- 
panded, somewhat dilated at the upper angle. Operculum ? 
Length 15, breadth 62 mill. 
Cyclostema mordax, Adams, Contrib. to Conch. p. 12; Pfr. Lc. 
n. 379, t. 46, f. 31, 32. 
Cistula ? mordax, Pfr. Consp. n. 396; Prnewm. Monogr. p. 269. 
Hab, Jamaica. 
18. Cistuna? LINEOLATA. B. M. 
Shell subperforate, oblong-conic, truncate, closely sculptured with 
longitudinal fold-like striz, decussated obsoletely, fulvous- 
whitish, painted with waving longitudinal reddish-brown lines ; 
suture middle, crenulate rather distantly and irregularly; 
whorls remaining 5, moderately convex, the last detached ante- 
riorly, keeled above, concentrically and crowdedly grooved be- 
neath; aperture ovate; peristome continuous, shortly expanded 
all round, angulated above. Operculum? Length 16, breadth 
7% mill. 
Cyclostoma lineolata, Lam. Hist. vi. p. 147, n.19; Hd. Désh. viii. 
p. 358, n. 182; Deless. Recueil, t. 29, f. 82; Chenu, Ill. Conch. 
t.1, f. 8. 
Cyclostoma lineolatum, Pfr. Jc. n. 41, p. 49, t. 6, f. 27, 28. 
