by small V-shaped sinuses; third tooth rudimen- 

 tary or in form of a small tubercle. Suborbital 

 margin oblique, with two clefts; outer lobe nearly 

 straight ; inner lobe divided into two parts with 

 inner angle produced in an acute tooth beyond 

 triangular, pterygostomian lobe. Posterior mar- 

 gin bordered above by a thin, sinuous, elevated 

 ridge broken into a variable number of unequal 

 transverse tubercles with usually some granules 

 interspersed. 



Chelipeds of male occurring in two forms. In 

 one form, chelipeds very unequal ; on right side 

 large and heavy, on left, slender and weak, both 

 tuberculate and pubescent ; carpus with an outer, 

 laminated, lobed crest; hand surmounted by a 

 similar double crest. Right hand very thick, width 

 at distal end often equaling one-half length of 

 carapace; immovable finger short, wide; dactyl 

 strongly bent down, overlapping opposed finger 

 and leaving a narrow gape. Left hand somewhat 

 over one-third width of right, fingers long and 

 narrow. In second, weaker form males, right hand 

 about twice depth of left ; fingers long and slender. 

 Females with chelipeds more nearly equal. 



Second pair of walking legs longer than others. 

 First walking legs reaching middle of propodus 

 of second, with posterior margin of propodus and 

 proximal half of dactyl hairy in male; third walk- 

 ing leg reaching middle of dactyl of second, 

 fourth leg slender, much shorter than third. Meri 

 rough with squamous tubercles ; with a single lon- 

 gitudinal groove on anterior surface, two on upper 

 surface; first three meri with a superodistal lobe, 

 subtriangular on first, subrectangular in second 

 and third, lobe exceeding article in first, equal to 

 article in second, not reaching end of article in 

 third. Carpus with a rounded, anterior proximal 

 lobe ; anterior subdistal lobe low and rounded on 

 first leg, triangular on second and third legs. Pro- 

 podus with anterior margin convex, posterior mar- 

 gin straight. 



Abdominal appendages of first form of male 

 stout and twisted, tip bilobed, inner lobe thinner 

 and longer than outer; second form of male with 

 appendages weaker, not twisted, and tip less 

 spreading. 



Measurements. — Carapace: male, 7 mm., width, 

 8 mm.; female, length, 8 mm., width, 9 mm. 



Variations. — This species shows great varia- 

 tion in structure. In some individuals the cara- 



pace is wider behind in proportion to its length 

 than in typical individuals, and the sides are less 

 parallel. There is no consistency in relative size 

 of the anterolateral teeth, for in some the first 

 are largest and all teeth point forward, but in 

 others the second teeth are largest and point 

 slightly outward. In some individuals the antero- 

 distal tooth on the merus of the second and third 

 legs is more produced than in typical specimens, 

 and there is variation in the length-width propor- 

 tions of the propodus of the second leg. Details 

 of lobulation on the front and lower margin of the 

 eye are also subject to variation. 



Habitat. — The species has been taken from a 

 variety of fine and coarse bottoms (Rathbun, 

 1918b) ; 4 to 60 fathoms. 



Type locality.— Lat. 29°11'30" N., long. 85°29' 

 00" W., 26 fathoms (south of Cape San Bias, 

 Fla.). 



Known range. — Cape Hatteras, N.C. ; Gulf of 

 Mexico along west coast of Florida from Cape 

 San Bias to Key West. 



Remarks. — Ovigerous females have been re- 

 ported in Florida from January to August, and 

 from North Carolina in October (Rathbun, 1918b, 

 and U.S. National Museum records). 



Palicus faxoni Rathbun 



Figure 201 



Palicus faxoni Rathbun, 1897a. p. 96. 



Cymopolia faxoni: Rathbun, 1918b, p. 194, text-fig. 120, pi. 45, 

 figs. 2-3 (rev.). 



Recognition characters. — Carapace broader 

 than long, sides converging anteriorly; adult fe- 

 male quite convex, surface hairy, and with numer- 

 ous tubercles and granules. Front broadly tri- 

 angular; four frontal lobes well marked, outer 

 pair not much wider than inner, median emar- 

 gination deeper than wide with end often rounded, 

 lateral emarginations shallow. Eyes large; orbits 

 deep, with upper border cut into teeth by V- 

 shaped sinuses, middle and outer teeth triangular, 

 subacute, middle one equilateral, outer one narrow 

 and separated from outer orbital tooth by a shal- 

 lower sinus; outer tooth directed forward, tip 

 oblique, its lateral margin nearly straight. Lateral 

 border with two similar, sharp-pointed teeth, sec- 

 ond one smaller, outer borders convex, inner con- 

 cave. Lower margin of orbit oblique, bilobed; 

 inner lobe in advance of outer, divided in two, 

 outer portion rounded, inner portion a small acute 



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