CYCLOPHORIDA. 173 
6. TuDORA ARMATA. 
Shell rimate, subperforate, elongate-conic, rather solid, silk- 
shining, grayish-fuscous, often spotted with reddish-brown, 
sculptured with longitudinal folds, which are crowded, thread- 
like, and collected on the suture in prominent bundles of about 
eight; spire elongate, truncate; whorls remaining 5, moderately 
convex, Increasing regularly, the last one shortly detached an- 
teriorly, indistinctly spirally grooved beneath; aperture per- 
pendicular, rather obliquely ovate; peristome simple, con- 
tinuous, scarcely expanded, angulated above. Operculum like 
that of T. fecunda. Length 15, breadth 74 mill. 
Cyclostoma armatum, Adams, Contrib. to Conch.n.1, p.10; Pfr. Le. 
n. 378, t. 46, f. 24-26. 
Tudora armata, Pfr. Consp. n. 360; Pneum. Mon. p. 247. 
Hab. Jamaica. 
7. TUDORA MUTICA. 
Shell subperforate, turreted, rather solid, sculptured with very 
crowded longitudinal fold-like striz, slightly shining, grayish- 
fuscous; spire elongate, truncate; suture rather simple; whorls 
remaining 5, moderately convex, increasing slowly, the last 
shortly detached anteriorly, keeled above; aperture slightly 
receding from the axis, ovate; peristome simple, slightly ex- 
panded, angulated above, Operculum like that of the pre- 
ceding. Length 14, breadth 55 mill. 
Cyclostoma muticum, Adams, Contrib. to Conch. n. 1, p.. 5. 
Tudora mutica, Pfr. Consp, n. 361; Pneum. Mon. p. 247, 
Hab. Jamaica. 
8. TupoRA ? MARITIMA. 
Shell rimate, oblong turreted, solid, closely folded longitudinally, 
scarcely shining, flesh-coloured, often indistinctly girdled with 
red lines; spire elongate, shortly truncate; suture crowdedly 
and minutely toothed; whorls remaining 53, little convex, the 
last one slightly grooved spirally beneath; aperture perpen- 
dicular, obliquely subovate; peristome simple, shortly expanded, 
with the margins joined angularly on the body of the penulti- 
mate whorl, columellar margin narrow, appressed. Operculum ? 
Length 13, breadth 54 mill. 
Cyclostoma maritimum, Adams in Proc. Bost. Soc. 1848, p. 102; 
Pfr. Ic. n. 275, t. 38, f. 5, 6. 
Cyclostoma Tetrarum, Lang, in Mus. Cuming. 
Tudora? maritima, Pfr. Consp. n. 362; Preum. Mon. p. 247. 
Q 2 
