THE CANCROID CRABS OF AMERICA 409 



Material examined. — 



SALVADOR.— Acajutla; F. H. Bradley; specimens in P. M. Y. U.; 

 1 male (16214), from Peabody Museum, Yale University. 



Gulf of Fonseca; J. A. McNiel; 1 female (4801, M. C. Z.). 



NICARAGUA.— iCorinto; 1 female (4802, M. C. Z.). 



COSTA RICA.— Puntarenas: January 1907; J. Fid. Tristan; 1 

 male, 1 female (39104). 1907; P. Biolley; 1 male, 1 female (50497). 

 Pacific or Estero side; February 1905; J. Fid. Tristan; 4 males, 4 

 females (1 ovigerous) (32282); "inhabit mangroves." August 8, 

 1927; M. Valerio; 1 male, 1 ovigerous female (61144). Salinas, at 

 sea level; July 17, 1928; M. Valerio; 1 male, 1 ovigerous female 

 (62519). 



PANAMA. — Doctor LeConte; 4 specimens (424, M. C. Z.), labeled 

 by Stimpson. C. F. Davis; 1 male (2238, M. C. Z.). Reefs; Mel- 

 bourne Ward; 1 male, returned. Panama, Pacific side; 1924; E. 

 Deichmann: Low tide, rocks; May-July; 1 male (60738). June; 2 

 males, 2 ovigerous females (60737). 



PERU.— Paita; 1873; Doctor W. H. Jones, U. S. N., 1 male 

 (2239, M. C. Z.). Las Vacas, nearCapon;onbeach; January 23, 1908; 

 R. E. Coker; 1 female (40425), 1 female returned to Peruvian Govern- 

 ment. Chincha Islands; R. C. Murphy; 1 male returned to Brooklyn 

 Museum. 



EURYPANOPEUS OVATUS (Benedict and Rathbun), new combination 



Plate 173, Figures 5 and 6; Plate 174, Figure 4. 

 Panopeus ovatus Benedict and Rathbun, Proc. U. S. Nat. Mus., vol. 14, 1891, 

 p. 368, pi. 24, fig. 8 (type-locality, Concepcion Bay, Gulf of California; 

 type. Cat. No. 15786, U.S.N.M.). 



Diagnosis. — Front not double-edged. Hepatic region deeply de- 

 limited. Anterior and antero-lateral regions coarsely granulate and 

 rugose. Lateral margin cut into shallow lobes. Color of propodal 

 fingers continued on palm. 



Description. — Close to E. transversus. Carapace flatter, anterior 

 and antero-lateral regions coarsely granulate and rugose, gastric 

 region narrower, surface more uneven, hepatic region more distinctly 

 outlined, median groove and groove leading back from antennal 

 notch deep. A groove extends inward from each of the three lateral 

 notches, the intermediate of these, that is, the one between third and 

 fourth teeth, longer than the other two. The front is not bimargi- 

 nate; although bent down and appearing thick, it lacks the regular 

 line of granules above which distinguishes transversus. A subhepatic 

 tubercle present. In the chelipeds, the outer surface of the manus 

 is punctate and nearly smooth, but the upper surface is finely wrinkled. 

 In old well developed males the major manus is twice as high as the 

 minor. 



In abdomen of male, the terminal segment is shorter and more 

 arcuate than in transversus. 



