THE SPIDER CKABS OF AMERICA 



25 



Merus of chelipeds with a row of small spines below and a less 

 distinct row above; carpus with three spines on outer surface; palm 

 unarmed, widening distally; fingers short, stout, slightly gaping in 

 basal half. Fingers more gaping in female than in male, on account 

 of their greater slenderness in the basal portion and the smaller size 

 of the basal tooth on the dactylus in the female. 



Ambulatory legs pubescent; merus of third pair with three strong 

 hooked spines beneath; propodus and dactylus strongly curved and 

 of about equal length. Propodus of fourth pair nearly straight, dis- 

 tally thickened; dactylus shorter than propodus and less curved than 

 in third pair. Dactylus of third and fourth pairs spinulous. 



Color. — General color, light orange yellow, palms of a much deeper 

 color (Henderson). 



Measurements. — 



Range. — From off Cape Lookout, North Carolina, to Gulf of Mexico 

 and Grenada. Depth, 30 to 262 fathoms. 

 Material examined. — See table, page 26. 



ANOMALOTHIR FRONTALIS (A. Milne Edwards) 



Plate 8, fig. 1; plate 9, fig. 1; plate 207 



Anomalopus frontalis A. Milne Edwards, Crust. R^g. Mex., 1879, p. 189, 

 pi. 36, figs. 1-1/ (type-localities, off Barbados, 100 fathoms, and off Havana, 

 175 fathoms; cotype, Barbados, in Paris Mus.; cotype, Havana, in M. C. 

 Z.); Bull. Mus. Comp. Zool., vol. 8, 1880, p. 8. — A. Milne Edwards and 

 BouviER, Mem. Mus. Comp. Zool., vol. 47, 1923, p. 368. 



Diagnosis. — Carapace almost smooth. Preorbital spine shorter 

 than postorbital. Length of propodus of cheliped, measured on its 

 upper margin, not more than three times its greatest width. No 

 spines on lower border of merus of third leg. 



Description. — Differs from A. furcillatus in the carapace broader 

 behind and less cylindrical, and in the more deflexed rostrum, the 

 horns of which are contiguous to near the extremity. A preorbital 

 spine is present though smaller than m furcillatus; the antennal spine 

 also is shorter than in that species. 



