90 AMERICAN MARINE CONCHOLOGY. 



Doubtful species. 



10. M. ornata, De Kay. Fig. 119. 



Moll., New York, 107, t. G, f. 104. 1843. 

 Shell moderately solid, subcorneal ; its transverse exceeding its 

 vertical diameter ; whorls four to five, convex ; the bod} r -whorl 

 very large, subinflated ; seven to nine distant revolving costa: 

 on its upper surface, which is separated from the simplj r striate 

 surface beneath by an obsolete carina; spire not much elevated, 

 faintl} r 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. 1813. 

 Shell small, pyramidal; whorls four, convex, obtusely carinate; 

 suture impressed; spire elevated; whorls with minute revolving 

 stria 3 , 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, S. Wood. 

 Ann. Mag. Nat. Hist. 530. 1842. 



1. A. costulata, Moller. Fig. 181. 



Index Moll. Gran. 8. 1842. 



Shell minute, white, thin, with crowded longitudinal ribs and 

 fine revolving stria: 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. (Eur.) 



Family JANTHIXID.E. 

 The animal has a proboscidiform head ; tentacles short and ob- 

 tuse, with pointed eye-pedicels at their bases, but without any 



