338 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 21 



Genus LEUROGYCLUS Rathbun 



Salacia Milne Edwards and Lucas, 1843, p. 12. 



Leurocyclus Rathbun, 1897, p. 164 (name substituted for Salacia, pre- 

 occupied) ; 1925, p. 230. 



Type: Salacia tuberculosa Milne Edwards and Lucas, type of Salacia 

 Milne Edwards and Lucas, by monotypy. 



Description: Carapace broader than long, depressed, and dilated 

 posterolateral^. Regions delimited by deep furrows; surface granulate 

 and tuberculate. Rostrum trianguliform, very short and narrow. Orbits 

 oval, directed forward and upward; a superior marginal notch and a 

 larger inferior hiatus. Eyes short and retractile. Basal antennal article 

 quadrate, as broad as long, terminating externally in a tubercle; flagel- 

 lum completely exposed at side of rostrum. Buccal cavity much broader 

 than long. Epistome rudimentary. Ischium of external maxillipeds broad, 

 inner margin denticulate; merus cordiform, anteriorly notched. Sternal 

 plastron broader than long, depressed, anteriorly trianguliform. Cheli- 

 peds short, granulate ; hand greatly swollen ; fingers elongate and inter- 

 nally denticulate. Ambulatory legs very long, spiny; merus [in the type 

 species] noticeably swollen ; propodus compressed ; dactylus elongate, 

 compressed, and slightly curved. (Milne Edwards and Lucas) 



Sixth and seventh segments in male abdomen fused ; in female, fifth, 

 sixth, and seventh fused. (Rathbun, 1925) 



Range: From Chile [exact locality unknown] to Rio de Janeiro, 

 Brazil. 



Contains two species, only one of which occurs in the Pacific. 



Leurocyclus tuberculosus (Milne Edwards and Lucas) 



Cf. Plate T, Fig. 9 



Salacia tuberculosa Milne Edwards and Lucas, 1842, pi. 2; 1843, p. 13. 



A. Milne Edwards and Bouvier, 1923, p. 387, pi. 12, fig. 5. 

 Salacia sp.? Brito Capello, 1871, p. 263, pi. 3, figs. 3, 3a, 3b. 

 Leurocyclus tuberculosus, Rathbun, 1925, p. 230, pi. 232, figs. 6-11; 

 pi. 233. Garth, 1957, p. 28. 



Type: Male holotype, length 52 mm, width 55 mm, in Paris 

 Museum. 



Type locality: Unknown; thought to be Chile. 



Localities subsequently reported, with collectors: Pacific Ocean: 

 Chile, E. Verreaux (Brito Capello). Atlantic Ocean: Rio de Janeiro, 

 Brazil, M. Jobert (A. Milne Edwards and Bouvier). 



