346 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 

 PANOPEUS CHILENSIS Milne Edwards and Lucas 



Plate 158, fig. 3; Plate 160 



I'ii7,opeus chilensis Milne Edwards and Lucas, d'Orbigny's Voy. I'Am^r. Mdrid., 

 vol. 6, pt. 1, 1844, p. 16; atlas, vol. 9, 1847, pi. 8, fig. 2-26 (type-locality, 

 Chile; cotypes in Paris Mus., one cotype ia U. S. Nat. Mus., No. 20264, 

 one in Phila. Acad.). 

 Panopeus validus Smith, Proc. Boston Soc. Nat. Hist., vol. 12, 1869, p. 278 

 (type-localities, Panama and Acajutla, Salvador; types in Peabody Mus. 

 Y.U.). 

 ^Panopeus bradleyi Smith, Proc. Boston Soc. Nat. Hist., vol. 12, 1869, p. 281 

 (type-locality, Panama; type not located in Peabody Mus. Y.U.). 



Eupanopeus chilensis Rathbtjn, Bull. Lab. Nat. 



Hist., State Univ. Iowa, vol. 4, 1898, p. 273. 

 Eupanopeus bradleyi Rathbun, Bull. Lab. Nat. 

 Hist., State Univ. Iowa, vol. 4, 1898, p. 273. 



Diagnosis. — Front narrow. Second to 

 fifth lateral teeth large and strongly curved. 

 Middle portion of lower orbital margin a 

 strong tooth. Color of immovable fingers 

 spreading on palm. Abdomen of male con- 

 stricted between fifth and sixth segments. 



Description. — Carapace moderately con- 

 vex, coarsely granulate. Grooves defining 

 gastric region and anterior cardiac region 

 deep; branchio-hepatic groove shallower. 

 Transverse granulate lines weak; the strong- 

 est are the epibranchial, hepatic, and epi- 



FiQURE 54.— Panopeus chilensis, , • , i , , • • i 



MALE ABDOMEN, ENLARGED. gastHC ; the protogastric regions have various 

 After Benedict AND Rathbun short irregular lines. Front narrow, promi- 

 nent, with a small, very distinct lobule at either end; submedian 

 lobes more advanced, edge forming a single arch with a very slight 

 median emargination which is followed by a deep, almost closed or 

 slightly button-holed fissure. Inner border of orbit strongly elevated, 

 ending in an acute tooth; superior border between fissures short, 

 arched forward; a broad and deep external emargination, below which 

 is a strong tooth which forms a large part of the lower wall of the 

 orbit; its inner slope is long and slightly bilobed; tooth at inner angle 

 more advanced and conical. Subhepatic tubercle large, conical, below 

 anterior part of second lateral tooth. Antero-lateral margin nearly as 

 long as postero-lateral, teeth large (except first), well separated. First 

 (or orbital) tooth small, an equilateral triangle with a blunt point, 

 separated from next tooth by a deep and very broad sinus. Second 

 tooth with a strongly arched outer margin and a concave inner one, 

 tip blunt. Third, fourth, and fifth teeth also strongly curved for- 

 ward, the inner edges concave; third wider at base than fourth, fifth 

 much narrower and thicker, but still longer and stronger than usual 



