10 GENUS DOLIUM. 
B. Species with the right lip more or less thickened into a 
margin, and pretty strongly denticulated. 
6. DOLIUM FASCIATUM, Lam. The Banded Tun. 
(Collect. Mass. Lam.) Sepa, Mus. 3, t. 68, fig. 17. 
Pl. III, fig. 5; et Pl. IV, fig. 6, var. 
D. testé ovato-ventricosd, tenuiuscula, alba, fasciis quatuor fulvo-rufis 
versus labrum evanidis cinct4; costis convexo-planis, plerisque confertis, 
supremis remotiusculis ; labro intis dentato, extus marginato. 
Shell ovate, ventricose, thin, whitish, with four or five dis- 
tinct bands of a reddish fawn-color, rarely continued to the 
right lip; there is only one upon the two whirls next above 
the lowest. ‘The spire is brown at top, and is formed of six 
convex whirls, encircled by projecting, pretty narrow, equal, 
approximate, flattened ribs, a little more distant towards the 
upper part; they are separated by shallow furrows. Two of 
the upper whirls are chequered as it were by intersections of 
strie. Suture a little flattened, and slightly channeled. ‘The 
aperture is ovate, white, colored with red at the bottom. The 
right lip is areuated, and presents externally a projecting mar- 
gin, which is crenulated outwardly by the jutting of the ribs, 
undulated externally, and dentated within. The columella is 
twisted; and upon some specimens are observed several cre- 
nulations towards the base of the left lip which partially covers 
the umbilicus. ‘The epidermis is thin and reddish. 
Length 5 inches. Width 4 inches. 
Inhabits the East Indian Seas. 
This shell is very distinct from the preceding in the form of 
the right lip, which is thickened and denticulated, and in the 
distribution of the transverse fawn-colored bands which suddenly 
stop within a third of the breadth of the shell without reaching 
the edge. Some specimens of the same species, which appear 
