392 PROCEEDINGS OF THE ACADEMY OF [1819. 



Casco Bay (Cooke), Is. of Shoals (R. H. Wheatland), Salem, 

 Mass., Nantucket (Packard), Narragansett Bay, R. I., So. Shore, 

 Long Island. Dr. Coues reports it from Fort Macon, Prof. Gibbes 

 from Charleston Harbor, S. C, and Mr. Faxon writes me that 

 there are specimens in the Museum of Comparative Zoology, at 

 Cambridge, Mass., from Florida and Hayti (Dr. Weinland). In 

 the Museum of the Peabody Academy of Science, Salem, Mass., 

 is a fossil carapax of this species from the Post Pleiocene deposits 

 of Gardiner, Maine. 



Sub-Family Xanthinae. 



Genus ACTJEA De Haan. 

 Actaea spinifera, sp. nov. 



Closely resembles A. hirmtissima, of the eastern seas, as figured 

 and described by Riippell 1 and Dana. 2 Carapax everywhere above 

 areolate, more prominently so in front. Each areolet with small 

 prominent rounded tubercles, which are covered with numerous 

 stiff hairs, the spaces between the tubercles and between the areo- 

 lets are smooth and naked; front with two depressed and pro- 

 duced lobes, the margins of which are armed with tuberculiform 

 teeth ; orbits with traces of two fissures above, spined above and 

 below. Antero-lateral margins with five subequal teeth separated 

 by rather deep grooves, the first three of which are continued on 

 the under surface of the cnrapax; the teeth themselves have their 

 margins armed with small spines. The postero lateral margin is 

 strongly concave, as much so as in A. hirsutissima. Cheliped 

 stout, of moderate length, inner surface of the joints smooth and 

 naked, meros compressed, upper edge acute and haired, outer 

 surface naked, upper and outer surfaces of carpus and hand with 

 spiniform tubercles and stiff hairs, on the hand these tubercles 

 tend to arrange themselves in rows; fingers short, stout, gaping, 

 acute, black, their tips being white. Meral joints of the ambula- 

 tory feet compressed, upper margin acute, and terminating in an 

 acute spine, sides smooth, remaining joints and posterior surface 

 of the meros of the last pair with spines and hairs similar to those 

 on the chelipeds; dactyli terminating in a small acute claw. 



1 Bescbreibung unci Abbildung von 24 Arten Kurzschwanzigen Krabben 

 * * * des rotben Meeres, Frankfurt, 1830, p. 26, pi. v. f. 6. 



2 U. S. Expl. Exped., p. 164, pi. viii. f. 3. 



