PART 1 GARTH : PACIFIC OXYRHYNCHA 39 



15a. Rostrum considerably less than postrostral 

 length, basal antennal article often longi- 

 tudinally sulcate .... Podochela 

 15b. Rostrum approaching or surpassing postros- 

 tral length, basal antennal article not longi- 

 tudinally sulcate 



16a. Carapace nodulous; a long spine at end 

 of merus of ambulatory legs; rostrum 

 few spined . . Metoporhaphis 

 16b. Carapace smooth; spine at end of 

 merus of ambulatory legs no longer 

 than others; rostrum multispinose 

 Stenorynchus 



Genus EURYPODIUS Guerin 



Eurypodius Guerin, 1825b, p. 700, footnote; 1828, p. 350. Milne 

 Edwards, 1834, p. 283. Dana, 1851b, p. 431 ; 1852, p. 100. Miers, 

 1879c, p. 646; 1886, p. 21. Rathbun, 1925, p. 80. 



Type: Eurypodius latreillei Guerin, by subsequent designation of 

 Guerin (1828). 



Description: 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. An- 

 tennae visible in dorsal view at sides of rostrum ; peduncular articles 

 slender. Merus of maxillipeds distally truncate, bearing the next article 

 at its anterointernal angle. Chelipeds 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. Abdomen seven- 

 segmented [in both sexes]. (Rathbun, 1925, after Miers, 1886) 



Range: Independencia Bay, Peru, to Rio de Janeiro, Brazil, via the 

 Strait of Magellan and Cape Horn. 4-175 fathoms. Contains but two 

 species. 



Key to the Species of Eurypodius 



la. Rostrum horizontal, spines contiguous. No spine on upper orbital 

 margin. Ambulatory legs broadened and compressed . latreillei 



lb. Rostrum inclined upward, spines divergent. A spine on upper 

 margin of orbit. Ambulatory legs slender . . longirostris 



