90 AMERICAN MARINE CONCHOLOGY. 
: Doubtful species. 
10. M. onnata, De Kay. Fig. 179. 
Moll., New York, 107, t. 6, f 104. 18438. 
Shell moderately solid, subconical; its transverse exceeding its 
vertical diameter; whorls four to five, convex; the body-whorl 
very large, subinflated; seven to nine distant revolving costa 
on its upper surface, which is separated from the simply striate 
surface beneath by an obsolete carina; spire not much elevated, 
faintly striate; umbilicus large and very profound; aperture 
rounded, oblique; lip thin and simple, entire. Bright red. 
Length 2.5, diam. 3.75 mill. 
New York. 
11. M. MuLTILINEATA, De Kay. Fig. 180. 
Moll., New York, 109, t. 6, f. 108. 1848. 
Shell small, pyramidal; whorls four, convex, obtusely carinate; 
suture impressed; spire elevated; whorls with minute revolving 
striz, and three to four revolving ribs; aperture suborbicular ; 
umbilicus entirely concealed by the reflection of the lip, but its 
place marked by a slight depression... Beautifully variegated by 
alternate yellowish-white and brown, or reddish-brown revolving 
lines; lip with abbreviated red and white lines. 
Height 7.5 mill. 
New York. 
Genus ADEORBIS, 8. Wood. 
Ann. Mag. Nat. Hist. 530. 1842. 
1. A. costunaATA, Moller. Fig. 181. 
Index Moll. Green. 8. 1842. 
Shell minute, white, thin, with crowded longitudinal ribs and 
fine revolving striz on the base; umbilicus deep; aperture 
rounded with continuous peristome; operculum multispiral, of 
about eight volutions, the outer ones testaceous, the nuclear cor- 
neous. 
Diam. 2.5 mill. 
New England, northwards. (Hur.) 
Family JANTHINIDA. 
The animal has a proboscidiform head; tentacles short and ob- 
tuse, with pointed eye-pedicels at their bases, but without any 
