MARINE MOLLUSCA OF THE UNITED STATES. 43 
deeper shade, teeth and wrinkles of mouth white, interstices and 
interior deep purple-brown. 
Length 6, diam. 4 inches. 
North Carolina to West Indies. 
2. C. GRANULOSA, Bruguire. Fig. 68. 
Encyc. Meth., No. 5. 1792. 
Shell somewhat globosely ovate, rather thin, extremity ventri- 
cose, spire sharp; whorls rounded, inflated, smooth, transversely 
obsoletely grooved, reticulately striated towards the apex; colu- 
mella smoothly plicated and conspicuously granose; lip reflected, 
thickened and dentate within. Bluish-white, encircled by five 
bands of somewhat square and irregularly interrupted reddish- 
brown spots. 
Length 4, diam. 23? inches. 
North Carolina to West Indies. 
Genus DOLIUM, Lamarck. 
Philos. Zool. 1809. 
Shell thin, roundly oval, ventricose, inflated ; spire small; whorls 
transversely furrowed; aperture very large, with a short, poste- 
rior reflected canal; inner lip thin, widely expanded; outer lip 
fimbriated or crenated. No operculum. 
About twenty species ; distribution tropical. 
1. D. GALEA, Linneus. Fig. 69. 
(Buccinum.) Syst. Nat., edit. xii. 1197. 1767. 
Shell very large, extremely ventricose, umbilicated ; spire short, 
a little sunk in; sutures deeply impressed; whorls seven in num- 
ber, swollen around the upper part, with revolving ribs ; ribs con- 
vex, close-set, upper ones with most frequently an intervening 
ridge ; columella somewhat twisted ; whitish or pale fulvous, apex 
blackish, columellar lip white, lip stained with brown. 
Length 8, diam. 6 inches. 
North Carolina to W. Indies ; Mediterranean. 
2. D. perprx, Linneeus. Fig. 70. 
(Buccinum.) Syst. Nat., edit. xii. 1197. 1767. 
Dolium plumatum, Green, Trans. Albany Inst., i. 131. 1830. 
Shell ovately oblong, thin, inflated, obliquely effused towards 
the base, umbilicated; spire somewhat exserted; whorls six in 
number with revolving ribs and grooves; ribs about twenty in 
number, contiguous, flatly convex, scarcely raised; columella 
