172 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Acanthocyclus villosus Strahl, Monats. Akad. Wiss. Berlin, 1861 (1862), p. 714, 



plate, 1 fig. (type-locality, Chile; type in Berlin Mus.). 

 Plaguseteselatus'H.Ei.i.ERjYeTh.'k. k. zool.-bot. Ges. Wien, vol. 12, pt. 1, 1862, 



p. 522 [4] (type-locality, Chile; type in Vienna Mus.). 



Description. — See page 171. 



Color. — Male (61569), dark blackish olive, lighter behind, where 

 it is suffused with tawny olive; legs tawny olive, especially propodi; 

 carpi and meri darker; all articulations whitish; dactyli with blackish 

 olive spot on upper margin; under side of crab and lower two thirds 

 of palms white. (Schmitt.) 



Measurements. — Male (17617), length of carapace 21.5, width of 

 same 23.2 mm. 



Range. — Tumbes, Peru, to Lota, Chile. 



Material examined. — 



PERU.— Salavery; Oct. 19, 1926; W. L. Schmitt; 2 females, 2 

 young (60843). 



San Lorenzo Island; Dr. H. E. Ames, U. S. Navy; 1 male (17617). 



Mollendo; J. Orton; 1 ovigerous female (61991), received from 

 Boston Societj^ of Natural History. 



Peru; 1 male (M.C.Z.). 



CHILE.— Tocopilla; November 14,1926; W.L. Schmitt; 2 males, 

 2 females (60842). 



Antofagasta: November 1914; J. N. Rose; 1 carapace (49060), 

 from Carnegie Institution of Washington. W. L. Schmitt; November 

 15, 1 female (61568); November 16, 1 male (61569). 



Valparaiso: 1 female, cotype (Mus. Phila, Acad. Nat. Sci.). 

 Eassler Exped.; 1 male (M.C.Z.). January 6, 1927; W. L. Schmitt; 

 1 immature female (61993). 



Talcahuano; 1 female (M.C.Z.). 



Lota; January 16, 1927; W. L. Schmitt; 1 ovigerous female 

 (61994). 



Chile: 1838-1842; U. S. Exploring Expedition; 1 female (Mus. 

 Phila. Acad, Nat. Sci.). 1 specimen, cotype of A. villosus (Berlin 

 Mus.). 



ACANTHOCYCLUS ALBATROSSIS Rathbun 



Plate 76, Figures 2, 3, 5, and 6; Plate 77 



Acanthocyclus gayi Strahl, Monats. Akad. Wiss. Berlin, 18G1 (1862), p. 713, 

 plate, 2 figs.; not A. gayi Milne Edwards and Lucas, 1844. — ?Miers, 

 Proc. Zool. Soc. London, 1881, p. 69; Isthmus Bay, Sts. Magellan. 



Acanthocyclus gay Targioni-Tozzetti, Zool. Magenta, vol. 1, 1877, p. 95, pi. 7, 

 fig. la-/," west coast of Patagonia. 



Acanthocyclus albatrossis Rathbun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 599 

 (type-locality, Port Otway; type, Cat. No. 21589, U.S.N.M.).— Lenz, 

 Zool. Jahrb., suppl. 5, vol. 2, 1902, p. 753; Cavancha and Almirantazgo, 

 Tierra del Fuego. — Stebbing, Proc. Zool. Soc. London, 1914, p. 344; Roy 

 Cove, Falkland Islands. 



Description. — See page 171. 



