418 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



BRAZIL.— Vigia, Grao Para; 1870; Derby and Powers, Hartt 

 Explorations; specimens in P. M. Y, U. Sao Francisco, Santa Catha- 

 rina; November 1, 1925; W. L. Schmitt; 1 female (61107). 



EURYPANOPEUS CRENATUS (Milne Edwards and Lucas) 



Plate 174, Figures 1-3 



f Xantho crenatus Milne Edwards, Hist. Nat. Crust., vol. 1, 1834, p. 396 (type- 

 locality, Peru; type in Paris Mus.). 



Panopeus crenatus Milne Edwards and Lucas, d'Orbigny's Voy. TAmer. M^rid., 

 vol. 6, pt. 1, Crust., 1844, p. 16; atlas, vol. 9, 1847, pi. 8, fig. 1 (type-locality, 

 environs de Callao (Chili); type in Paris Mus.). — Benedict and Rathbun, 

 Proc. U. S. Nat. Mus., vol. 14, 1891, p. 377, pi. 21, fig. 4; pi. 24, fig. 17. 



Eurypanopeus crenatus A. Milne Edwards, Crust. Reg. Mex., 1880, p. 318, 

 figs. 4-46. 



Eurypanopeus peruvianus A. Milne Edwards, Crust. Reg. Mex., 1880, p. 318, 

 pi. 60, figs. 3-36 (type-locality, Peru; type in Paris Mus.). 



Diagnosis.— CsLrsLpfice very convex, smooth, no rugose lines. 

 Urogastric region of good length throughout. Front prominent. 

 Lateral margin cut into shallow lobes. Fingers not gaping; dark 

 color scarcely continued on palm. 



Description. — Carapace very convex, especially antero-posteriorly. 

 Surface nearly smooth, punctate, microscopically very closely gran- 

 ulate; no rugosities. Regions indicated by shallow sutures; a large 

 pit between hepatic and branchial regions; urogastric region longer 

 than usual, about half as long as wide; a small triangular area de- 

 limited at inner angle of branchial region. Front advanced, upper 

 surface concave, edge thick, slightly convex to the shallow outer 

 lobules, which are rounded off and not at all prominent; median notch 

 minute ending in a short closed fissure. Supra-orbital notches slight; 

 exorbital notch large; from the latter the suborbital margin is trans- 

 verse to the broad arcuate tooth at inner angle. First antero-lateral 

 (orbital) tooth very small, united with the broad second tooth or 

 lobe, forming a sinuous margin. Remaining lateral sinuses narrow, 

 shallow; third and fourth teeth subequal, truncate, the long margin 

 slightly convex; anterior margin longer and more outstanding in 

 fourth than in third tooth; a short carina running from apex of 

 fourth tooth; fifth tooth short, triangular, obtuse, its carina extended 

 on the carapace further than in fourth tooth. 



Inequality of chelipeds not great. Subdistal tooth of merus 

 rectangular, tip tuberculiform. Carpal groove shallow, inner tooth 

 broadly pyramidal. Lower margin of propodus slightly sinuous, 

 finger nearly horizontal, its color scarcely extending on palm, only so 

 far as is limited by an oblique line from the prehensile edge to lower 

 margin. Fingers not gaping. Basal tooth of major dactyl broader 

 than long. 



