470 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



margin in general horizontal, its two lobes slightly convex, finely 

 denticulate, a small triangular tooth at outer angle, separated from 

 the upper orbital angle by a notch. Antero-lateral border of carapace 

 armed with four small spines or teeth; no tooth at external orbital 

 angle. Of the teeth the first is smallest, third largest, second and 

 fourth of about equal size; margins of teeth denticulate. 



Chelipeds short, unsymmetrical ; merus granulated on outer face, 

 spinulous on upper edge and grooved near articulation with carpus. 

 Carpus granulated on outer side, and having a tooth at inner angle. 

 Major propodus inflated, granular along upper margin and at proxi- 

 mal end of outer face where some of the granules are enlarged and 

 tubercular. Minor propodus with subparallel margin, rough all over 

 the outer face. Meri of ambulatory legs finely roughened. 



Measurements. — Male type, length of carapace 8, width 11, length 

 of large chela 10, width of same 5 mm. (Faxon). Female (20053), 

 length of carapace 7.6, width 11.2, fronto-orbital width 6.6, frontal 

 width 3.6 mm. 



Range. — Ofl' Panama, 153 to 182 fathoms. 



Material examined. — Off Panama; 1891; Albatross: 



Lat. 7° 33' 40" N., long. 79° 43' 20" W.; 153 fathoms; gn. M.; 

 temperature 55.8° F.; March 9; station 3391; 1 male (type), 3 females 

 (4483, M. C. Z.). 



Lat. 7° 12' 20" N., long. 80° 55' 00" W.; 182 fathoms; bk. G. Sh.; 



temperature 54.1° F.; February 23; station 3355; 1 male, 2 females 



(20053). 



Genus EUCRATODES A. Milne Edwards 



Eucraiodes A. Milne Edwards, Crust. R^g. Mex., 1880, p. 346; type, E. agas- 

 sizii A. Milne Edwards; Bull. Mas. Comp. Zool., vol. 8, 1880, p. 14. — 

 Rathbun, Bull. U. S. Fish Comm. for 1900, vol. 20, pt. 2 (1901), p. 35. 



Carapace oval, of moderate width, antero-lateral margins arcuate, 

 feebly dentate, postero-lateral converging. Fronto-orbital width 

 about two-thirds the greatest width of carapace. Frontal lobes 

 entire. No upper fissures on orbital margin, a shallow emargination 

 below. Basal article of antennae short, just touching a prolongation 

 of front; the flagellum lies in the orbital hiatus. Antennules folded 

 transversely. Buccal cavity broad; margin of epistome with two 

 notches on each side; endostome without ridge. Merus of outer 

 maxillipeds subquadrilateral, notched at inner angle for articulation 

 of palpus. Chelipeds of moderate size and nearly equal; fingers 

 pointed. Ambulatory legs slender, smooth; dactyli elongate. Third, 

 fourth, and fifth segments of abdomen fused; third segment angular 

 at sides, reaching coxae of fifth pair of feet. 



Akin to Metopocarcinus. Contains only one species. 



