348 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Panama: 1 female (19872), received from Ward's Natural Science 

 Establishment. Panama (?); 1 male (13930). Panama City; J. 

 Zetek: December 12, 1913, 1 male (48792); October 5, 1914, 1 male 

 (48783). Shore of Panama; low tide, rocks; May-July, 1924; E. 

 Deichmann, 1 male, 1 female with Rhizocephalid (60803). 



Paita, Peru; October 8, 1926; W. L. Schmitt; 1 cheliped (62723). 



Oyster beds of Matapalo (near Capon), Peru; January 23, 1908; 

 R. E. Coker; 1 female (40426), received from Peruvian Government. 



Chile; d'Orbignj^; cotypes (Paris Mus.), 1 male cotype (20264), 1 

 male cotype, Guerin collection (Phila. Acad.). 



PANOPEUS OCCIDENTALIS Saussure 



Plate 161 



Panopeiis occidentalis Saussure, Rev. et Mag. Zool., ser. 2, vol. 9, 1857, p. 502 



(type-locality, Guadeloupe; type in Geneva Mus.); Mem. Soc. Phys. 



Geneve, vol. 14, 1858, p. 431 [15], pi. 1, fig. 6.— A. Milne Edwards, Crust. 



Reg. Mex., 1880, p. 310. — Benedict and Rathbun, Proc. U. S. Nat. Mus., 



vol. 14, 1891, p. 360, pi. 20, fig. 3; pi. 23, fig. 14. 

 Panopeus serratus Saussure, Rev. et Mag. Zool., ser. 2, vol. 9, 1857, p. 502 



(type-locality, Guadeloupe; type in Geneva Mus.); M6m. Soc. Phys. 



Geneve, vol. 14, 1858, p. 432 [16], pi. 1, fig. 7. — Benedict and Rathbun, 



Proc. U. S. Nat. Mus., vol. 14, 1891, p. 371, pi. 24, figs. 3 and 4. 

 Eupanopeus occidentalis Rathbun, Bull. Lab. Nat. Hist. State Univ. Iowa, vol. 



4, 1898, p. 273; Bull. U. S. Fish Comm. for 1900, vol. 20, pt. 2 (1901), p. 29. 

 Eupanopeus serratus Verrill, Trans. Connecticut Acad. Arts and Sci., vol. 13, 



1908, p. 353, text-figs. Ud and 18, pi. 16, figs. 1 and 5. 



Diagnosis. — Front narrow, advanced. Gastric region convex. 

 Lateral teeth thick and deeply separated. Third tooth broad and 

 blunt, forming almost a right angle at tip. Wrist with distal groove. 

 Dark color of propodal finger not continued on palm. Sixth segment 

 of male abdomen usually narrowed toward proximal end. 



Description of the typical form (Plate 161, fig. 2). — Differs from P. 

 herbstii as follows: Carapace more convex especially the gastric 

 region. Second tooth of lateral margin usually narrower and sep- 

 arated by a deeper sinus from first tooth; third to fifth teeth thicker, 

 more prominent and more widely separated from each other; third 

 tooth blunt, forming almost a right angle at the tip. Front narrower 

 and more advanced. Carpus of chelipeds with a groove parallel to 

 distal margin. Dark color of thumb not continued on palm. Am- 

 bulatory legs a little longer and slenderer. Abdomen of male wider, 

 especially noticeable at penult segment, which is inclined to narrow 

 a little toward proximal end. 



Color. — Carapace dull yellow spotted with brown and red; feet 

 nank'n yellow, with some brown maculations and specldes on cheli- 

 peds and brown or rose streaks on the ambulatories (Desbonne and 

 Schramm). In Brazilian specimens the speckles on the palm form 

 a partially reticulate pattern, the color runs further down the outer 



