80 BULLETIN 129^ UNITED STATES NATIONAL MUSEUM 



enlarged tooth fits into a hollow in the dactylus. The first ambula- 

 tory leg may exceed the cheliped. 



Measurements. — Male (46488), length of carapace including 

 rostrum 33.7, length of rostrum 5, width of carapace 25 mm. 



Eange. — -Western part of Bering Sea. Depth 270 to 764 fathoms. 



Material examined. — See table, page 78. 



Genus EURYPODIUS Guerin 



Hurypodius Guerin, Encyc. Meth., Hist. Nat., Entom., vol. 10, 1825, p. 

 700, footnote; Mem. Mus. Hist. Nat. Paris, vol. 16, 1828, p. 3.50; type, E. 

 latreillii Gu6rin. — Milne Edwards, Hist. Nat. Crust., vol. 1, 1834, p. 

 283.— Dana, U. S. Expl. Exped., vol. 13, Crust., part 1, 1852, p. 100.— 

 MiERS, Journ. Linn. Soc. London, vol. 14, 1879, p. 646; Challenger Rept., 

 Zool., vol. 17, 1886, p. 21. 



Carapace elongate-triangular, moderately convex, and spinous or 

 tuberculate above; a distinct postorbital, but no preorbital spine. 

 Spines of rostrum contiguous, at least in part of their length. Abdo- 

 men seven-segmented. Antennae visible in dorsal view at sides of 

 rostrum; peduncular articles slender. Merus of maxillipeds distally 

 truncate, bearing the next article at its antero-internal angle. Cheli- 

 peds of male well developed, with the palm compressed or turgid 

 and the fingers distally acute. Ambulatory legs considerably 

 elongate, with the penultimate articles more or less dilated and 

 compressed; the dactyls slightly arcuate, shorter than the propodites 

 and reflexible against their inferior margins. 



Contains not more than two species, inhabiting South American 

 waters. 



KEY TO THE SPECIES OF THE GENUS EURYPODIUS 



A^ Rostrum almost horizontal, only slightly arched upward in the middle 

 of its length. No supraorbital spine latreillii, p. 80. 



A 2. Rostrum of male inclined strongly upwar-d (about 45°) from base to tips. 

 A supraorbital spine longirostris, p. 83. 



Species on both sides of the continent: latreillii. 



EURYPODIUS LATREILLH Guerin 



Plates 30, 31, and 215 



Eurypodius latreillii Guerin, Mem. Mus. Hist. Nat. Paris, vol. 16, 182S, 

 p. 354, pi. 14 (type-locahty, lies Malouines [Falkland Islands]; type in Paris 

 Mus.); Icon. Regne Anim. Cuvier, pi. 11, fig. 1 (female) .^Milne Ed- 

 wards, Regne Anim. Cuvier, Crust., Disciples ed., pi. 34bis, fig. 1. — Bell, 

 Trans. Zool. Soc. London, vol. 2, 1836, p. 40. — Dana, U. S. Expl. Exped., 

 vol. 13, Crust., pt. 1, 1852, p. 104; atlas, 1855, pi. 3, fig. 1. — Cunningham, 

 Trans. Linn. Soc. London, vol. 27, 1871, p. 491. — Stebbing, Proc. Zool. 

 Soc. London, 1900, p. 527. 



Erypodius latreillia Milne Edwards, Hist. Nat. Crust., vol. 1, 1834, p. 284. 



Eurypodius cuvieri Audouin, in de Haan, Fauna Japon., Crust., pi. H. 



