1879.] NATURAL SCIENCES OF PHILADELPHIA. 395 



Prof. Webster collected specimens at Sarasota and Little Sara- 

 sota Bay, Fla. Other localities, New York (Dekay), So. Carolina 

 (Gibbes, Stm.), Key West, Fla. 1 (Packard), Smyrna, Fla. (Gibbes), 

 Key Biscaj-ne, Fla. (Stm.). Mr. Faxon tells me that there are 

 specimens in the Museum of Comparative Zoology from Hayti 

 (Dr. Weinland) and Brazil (Thayer Expedition). 



Genus CHLORODIUS Leach. 



Chlorodius floridanus Gibbes. 



Chlorodius floridanus Gibbes, 1. c, iii. p. 175. 



Leptodius floridanus A. M. Edw., Hist. Crust. Fossiles, i. p. 228. 



But a single specimen of this common species was collected by 

 Prof. Webster, at Plantation Key, Fla. I have examined others 

 from Key West! (Packard), Aspinwall! (McXiel), and Abrolhos, 

 Brazil ! (Hartt). 



Chlorodius longimanus M. Edw. 



Chlorodius longimanus M. Edw., Hist. Crust., i. p. 401. 



A single specimen was collected at Key West, by Prof. Webster. 



I have seen others from the same locality collected by Dr. A. 

 S. Packard, which differ from Edwards's description in having the 

 meros of the chelipeds armed with five distant tuberculiform 

 teeth. Edwards's specimens were from Porto Rico. 



Chlorodius dispar Stm 



Chlorodius dispar Stm., B. M. C. Z., ii. p. 140. 



Eighteen specimens were collected at Key West, and as they 

 show a considerable range of variation, I give a description of a 

 specimen varying most widely from Stimpson's t3 T pe. 



Carapax transversely oval, very broad, smooth, naked ; antero- 

 lateral margin almost entire, the three last teeth alone showing, 

 and they but very slightly. Front sinuate, four lobed, resembling 

 that of Panopeas herbstii, a straight fringe of hairs above the 

 margin. Orbits entire above and below, the inner inferior angle 

 prominent. Chelipeds long, about equal in length, but differing 

 greatly in diameter, the right being usually the larger. Fingers 

 of the larger about half the length of the palm, short, stout, 

 gaping, with the extremities acute, not at all excavate. Smaller 

 cheliped, with the carpus and propodus polished and deeply punc- 

 tate. Hand long, no stouter than the preceding joint, subcjdin- 

 drical, fingers about half as long as the palm, closing completely, 



