The Doha of the United States. 



m 



distinguish the two species. As Solander's specific name of 

 Maculosum is almost identical with Maculatum— already employ- 

 ed to designate a Dolium— we have chosen to revive Solander's 

 species, supposing ours to be such, under the name of Dolium 

 Plumatum. 



The habitat of this shell I am unacquainted with ; the specimen 

 from which my description is made, was obligingly lent to me for 

 that purpose, by P. H. Nicklin, Esq. I have a perforated speci- 

 men from one of the South Sea Islands, which was once an orna- 

 ment of an Indian chief. 



Dolium Olearium. IAn. 



Shell roundish, rather thin, with about twenty transverse ribs, 

 having an elevated line in the interstices of those nearest the spire ; 

 spire rather flat, and grooved at the sutures ; outer lip crenulate, 

 with a very strong callous ridge on its inferior edge ; pillar um- 

 bilicate; colour light fawn or pale brown : length about three inch- 

 es, and more than two-thirds as broad. 



Mr. T. R. Peale brought a number of these shells from Florida, 

 but none of them were living specimens. 



