THE SPIDER CRABS OF AMERICA 



445 



Diagnosis.— CuTupsice distinctly longer than broad. Two large 

 tubercles on the intestinal region, one on each side of the median 

 line. A very large branchial spine near lateral angle. Legs cristate 

 on posterior as well as anterior margins. 



Description. — Carapace longer than broad; two median tubercles, 

 one gastric, one cardiac; a stout, suberect spine on branchial region 

 near postero-lateral angle; an oblique row of three very small spines 

 on lateral branchial margin, the posterior one situated below the 

 others; a tubercle on hepatic margin; lateral margin also granulate; 

 two large tubercles above posterior margin; a few other tubercles 

 and tufts of hair scattered on carapace. Rostral teeth small, sepa- 

 rated by a sinus; preorbital lobes smooth, rounded, prominent; 

 two faint emarginations in upper margin of orbit. Basal article of 



a 



Fig. 129.— Teleophrys oknatus, female (23774), carapace 5.6 mm. long. 

 a. Carapace, dorsal view. 6. Ambulatory leg. (After Rathbun.) 



antenna with an antero-external tooth and a tuberculiform tooth on 

 outer margin. Inner distal margin of merus of maxilliped oblique. 



Chelipeds with the thin, upper margin of merus cut into laminate 

 lobes, wrist ornamented with about five similar lobes; hand smooth, 

 tapering distally, the gaping fingers of the young male each armed 

 with three tubercles on the inner edge, the proximal one largest. 

 Chelipeds of female very feeble, fingers gaping very little and only 

 at base. Legs with a single margin, above and below, of irregular 

 laminate lobes on merus, carpus and propodus; the inferior lobes 

 of the propodus are a little above the margin on outer surface; no 

 additional lobe on that surface; dactylus strongly curved, posteriorly 

 denticulate. 



Measurements. — Egg-bearing female, holotype, length of carapace 

 5.6, width 4.7 mm. 



