THE SPIDER CRABS OF AMERICA 



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Chelipeds of medium-sized male 

 a little longer than the carapace and 

 the next pair of legs. In large 

 males the cheUpeds are much more 

 elongate. Merus armed with 5 or 

 6 stout spines above. In small 

 specimens the ambulatory legs 

 diminish fairly regularly in length 

 from the first to the last, but in 

 the larger males the first leg is very 

 much longer than the second. 



Measurements. — Largest male 

 (M. C. Z.), length of carapace 72, 

 width 60, length of cheliped about 

 120 mm. Length of male (21937) 

 to tip of horns 33.8, greatest width 

 24.8, length of chehped 37 mm. 



Range. — Gulf of California to 

 Magdalena Bay, west coast of Low- 

 er California, Mexico. Depth, 8 to 

 21 fathoms. 



Material examined. — See table, 

 page 455. 



STENOCIONOPS SPINOSISSIMA (Saussure) 



Plate 165, fig. 2; plate 264, figs. 3 and 

 4; plate 265 



Pericera spinosissima Saussure, Rev. 

 et Mag. Zool., ser. 2, vol. 9, 1857, 

 p. 501; M^m. Soc. Phys. Geneve, 

 vol. 14, 1857, p. 426 [10], pi. 1, fig. 

 2 (type-locality, Guadeloupe; holo- 

 type in Geneva Mus.). — A. Milne 

 Edwards, Crust. Reg. Mex., 1873, 

 p. 52. 



Stenocinops polyacanlha Moreira, A 

 Lavoura, Bol. Soc. Nac. de Agric. 

 Brazil, anno 7, 1903, p. 66; reprinted 

 as a separate, 1903, p. 11, 3 text 

 figs.; Arch. Mus. Nac. Rio de 

 Janeiro, vol. 13, 1906, p. 20, pi. 4, 

 fig. 2, pi. 5 (type-localities, SE. and 

 E. SE. of Ilha Rasa, off the entrance 

 of the bar of the bay of Rio de 

 Janeiro, at 10 to 12 miles from the 

 coast in 48, 60, 80, and 100 meters; 

 type in Mus. Nac. Rio de Janeiro). 



