82 OX THE 1JLUE PHOSPHATE 



genus OCYPETE. Leach. 



Feet six ; mouth rostrated, porrected, with man- 

 dibles ; palpi elongate-conic, with a moveable ap- 

 pendage at base; body soft; eyes two. 



Species. — C. *comata. Body subtriangular. very 

 obtusely rounded behind, hirsute, and narrowed by 

 an arquated line to the rostrum; rostrum short, nar- 

 rowed and emarginated at tip; posterior feet longer 

 than the body, and with much longer hairs than those 

 of the body. 



Inhabits several species of T'qnda. 



This is readily distinguishable from the 0. rubra 

 Leach, by the elongated hairs of the feet. The spe- 

 cimens in my possession, are so disposed that the 

 trophi cannot be examined, I therefore refer them to 

 this genus by analogy, drawn from habit, &c. 



Analysis oj the Blue Iron Earth of New Jersey, 

 made at the School of Mines at Paris, in the year 

 1819, by Lardxer Vanuxem. — Read, March 

 13th, 1821. 



This is the same mineral that was examined by 

 Judge Cooper, and an account of which was published 

 by him in the first volume, (second series) of the 

 Transactions of the Philosophical Society of Phila- 

 delphia. He considered it to be an Hydrate of the 



