THE CANCEOID CRABS OF AMERICA 143 



slightly bidentate. The separation of the antennal flagellum from 

 the orbit by a process from the basal article is not so well marked 

 as in C. ruber. Chelipeds rather short and stout; merus armed with 

 three large and one small spine on the front edge; spine of outer 

 extremity of posterior edge of merus minute, almost obsolete. Inner 

 spine of carpus long, reaching about a third the length of palm. 

 Only one spine on superior margin of hand at distal third; another 

 at articulation of carpus. On the merus of the swimming legs there 

 is a denticulated postero-distal margin, but no spine. 



Color. — Variegated hazel and rufous. (Schmitt.) 



Young. — Carapace narrower and more tumid than in the old, 

 front less advanced, teeth shallower, interspaces shorter. The 

 outer denticle at the upper inner angle of the orbit is very slight. 

 The four small intermediate teeth of the antero-lateral margin are 

 minute and closely appressed. Lateral spine not much longer 

 proportionately than in the adult. 



Measurements. — Male (14053), total length of carapace 21, 

 width of same 30.7, width at anterior base of spine 27.2, fron to- 

 orbital width 18.3, width of front (4 teeth) 6.7 mm. Verrill records 

 a larger specimen, carapace of male 27 by 41 mm. 



Range. — Bahamas and Florida Keys to the State of Bahia, Brazil. 

 Bermuda. 



Material examined. — See table, pages 144-146. 



Subfamily Podophthalminae 



Orbits occupying the whole of the anterior border of the carapace 

 except for a very narrow front; eyes on very long stalks. 



Genus EUPHYLAX Stimpson 



Euphylax Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, 1860, p. 225 [97]; 

 type, E. dovii Stimpson. 



Carapace transversely oval, convex; antero-lateral margin short, 

 rounded, sparingly dentate; fronto-orbital distance about f-, of width 

 of carapace. Orbits very long, outwardly deeply cut, outer angle a 

 tooth or spine closing orbit outside; inner suborbital lobe extensive, 

 smooth above, margin crenulate. Eyes large, stalk slender, greatly 

 elongate, compressed; cornea stout. Front very narrow between 

 bases of eyestalks but anteriorly strongly dilated and deflexed, and 

 with a median tooth on the anterior or lower margin. Peduncle of 

 antennae embedded between outer extremity of the front and the 

 adjoining lower margin of the orbit, basal article short, movable part 

 about half as long as orbit. Antennules close together, folded 

 horizontally but not completely retractile. Epistome linear, well 

 defined, armed in front with a spine which projects between the 

 antennules. Merus of outer maxillipeds obliquely quadrate, little 



