234 PROCEEDINGS OP THE ACADEMY OP 



Genus CYAMIUM, Phil. 

 Archiv fur Naturgescii. i. 50. 1845. 



1. C. antarcttcum, Phil. Archiv fur Naturg. 50. 1845. 



Gregory Bay, Patagonia. 



2. C. elevatum, Stimpson (Montacula), Shells of New Eng. 16. 



1851. 

 Gould, Invert. Mass. 2d edit. f. 396. 1870. 

 Montacuta bidentata (not of Mont.), Gould, Invert., 1st 



edit. 59. 1844. 



Coast of New England. 



