510 BULLETIN 129;, UNITED STATES NATIONAL MUSEUM 



lated and compressed; fingers gaping at base, dentate throughout 

 their whole length. Dactyli of ambulatory legs spinulous on their 

 middle third, the spinules increasing in size distally. 



Stout hooked hairs ornament the rostrum, the prominent parts of 

 the carapace and the feet. 



Color. — General color yellowish-gray; carapace greenish above, 

 with two triangular white spots; blackish above the base of the legs 

 (Desbonne). 



Measurements. — Female, length of carapace 35, width 21 mm. 

 (A. Milne Edwards). 



Range. — West coast of Florida to Bahamas, West Indies and 

 Cape St. Roque, Brazil. Shallow water to 20 fathoms. 



Material examined. — See table, page 509. 



Otlier records. — -Tortugas (A. Milne Edwards) ; St. Thomas 

 (Aurivillius) ; Guadeloupe (Desbonne). 



Family PARTHENOPIDAE 



Parthenopiens and Canc^riens cryptopodes Milne Edwards, Hist. Nat. 



Crust., vol. 1, 1834, pp. 347 and 368. 

 Parthenopinea Dana, U. S. Explor. Exped., vol. 13, Crust., 1852, pp. 77 and 



136. 

 Parthenopinea and Parthenopidae Miers, Journ. Linn. Soc. London, Zool., 



vol. 14, 1879, pp. 649 and 667. 

 Parthenopidae Alcock, Journ. Asiat. Soc. Bengal, vol. 64, 1895, p. 257. — 



BoRRADAiLE, Ann. Mag. Nat. Hist., ser. 7, vol. 19, 1907, p. 480. 



Chelipeds not specially mobile, usually much longer and heavier 

 than the other legs, and with fingers bent on the hand at an angle 

 towards the side on which the fixed finger is set. Second article of 

 antennae small, short, and not fused with epistome or front. Orbits 

 well made. Hooked hairs almost always wanting. Male openings 

 coxal. The palp of the external maxillipeds is articulated at the 

 antero-internal angle of the merus. (Borradaile.) 



The family is divided into two subfamilies, the Parthenopinae and 

 the Eumedoninae. All of the genera represented in American waters 

 belong to the first, which is much the larger subfamily. 



Subfamily PARTHENOPINAE 



Parthenopinae Miers, Journ. Linn. Soc. London, Zool., vol. 14, 1879, p. 668. 



Carapace commonly equilaterally-triangular, sometimes subpen- 

 tagonal or ovate-pentagonal, and sometimes semicircular or semiel- 

 liptical in outline; cardiac and gastric regions usually so deeply 

 marked off from the branchial regions on either side as to make the 

 dorsal surface of the carapace trilobed; chelipeds vastly longer and 

 more massive than the ambulatory legs; rostrum simple or obscurely 

 trilobed. (Alcock.) 



