Notes on NoTth American Crustacea. 203 



tative of A. lohatus of the Atlantic side of the continent, but 

 differs in being more convex and granulated posteriorly, having 

 higher crests to the hands, etc. 



Found at Cape St. Lucas, by Mr. Xantus. 



Actaea nodosa, nov. sp. 



Oarapax broad, and deeply areolated both anteriorly and posteriorly; 

 the areolets forming prominent granulated nodes, mostly of nearly equal 

 size, and in number about forty, including those constituting the 

 antero-lateral teeth. These nodes are strongly convex in the anterior, 

 but flattened in the posterior regions of the carapax. The furrows 

 separating them are wide and deep, and more or less thickly pubescent. 

 The median gastric areolet, which in this genus is usually long and 

 slender, reaching far forward, is in the present species almost obsolete, 

 being represented only by its tuberculiform posterior extremity. The feet 

 are nodose and granulated like the carapax. The outer surface of the 

 hand is tuberculated, the tubercles being arranged, inferiorly, in three 

 longitudinal rows. Length of the carapax in a female, 0.64; breadth, 

 0-97 inch. 



Found at the Tortugas, Fla., by Dr. Whitehurst. 



Actaea sulcata, nov. sp. 



Upper surface of the carapax divided into thirty flattened and granu- 

 lated lobules (besides the small ones around the orbits), separated by 

 deep pubescent sulci. The posterior lobules are less prominent, more 

 distinctly granulated, and sometimes concealed by pubescence. Cheli- 

 peds above nodose like the carapax; hands and fingers, at base, strongly 

 granulated externally. Ambulatory feet longitudinally sulcated, but not 

 granulated. Color bright-red, somewhat maculated or mottled with 

 white. Length of the carapax in a female, 0.37 ; breadth, 0.56 inch. 



It is somewhat nearly allied to A. nodosa, but the lobules or 

 nodes of the carapax are less prominent and less distinctly 

 granulated. 



