79 



body whirl, and slightly reflected ; labriim incrassated, and with 

 olevated lines upon the fauces, which do not attain the edge of the 

 lip. 



Length half an inch. Inhabits the shores of the Southern 

 States. Cabinet of the Academy and Philadelphia Museum. 



A species which not unfrequently occurs, it is very distinct from 

 the two preceding ones, and may be readily distinguished from them 

 by the incrassated outer lip. 



Cerithium dislocatum. — Shell attenuated, acute at the apex ; 

 volutions with numerous, minute, revolving, impressed lines, and 

 from fifteen to eighteen transverse, elevated costa to each volution, 

 which are dislocated near the summit of each volution by a revolv- 

 ing line, as deeply impressed as the suture. 



Length one and one-fourth of an inch. Inhabits the coast of 

 the United States. Cabinet of the Academy and Philadelphia 

 Museum. 



This shell is very common on the Southern shores, particularly 

 on that of East Florida, but I have also found specimens on the 

 shore of Mai-yland. Lister, tab. 979, fig. 36, represents a shell very 

 similar to this, but larger. 



The effect of the impressed line, which revolves above the mid- 

 dle of the volutions, is, to separate the longitudinal raised lines 

 into two series, whereof the lines of the superior series are much 

 shorter and thicker than the others. 



Fusus CINEREUS. Shell with a cinereous epidermis, reddish- 

 brown beneath ; volutions cancellate, the transverse costa eleven, 

 robust; revolving lines filiform, irregularly alternately smaller, 

 crenating the edge of the exterior lip, which is acute, and alterna- 

 ting with the raised lines of the fauces ; fauces tinged with choco- 

 late color ; beak short, obtuse, not rectilinear ; labrum not incras- 

 sated. 



Length one and one-fourth of an inch. Inhabits the estuaries of 

 the United States. Cabinet of the Academy and Philadelphia 

 Museum. 



I have frequently found this species in oozy places of the bay 

 of G-reat Egg Harbor, and on the Eastern shore of Maryland. My 

 brother, B. Say, ascertained that it is also an inhabitant of the coast 

 of New Jersey. 



