PART 1 garth: pacific oxyrhyncha 187 



convex. The male first pleopod, which is quite similar to that of Pugettia 

 quadridens (De Haan) (cf. Shen, 1932, text-fig. 28c), would appear to 

 support this view. 



Range: Eastern Pacific from Attu Island, Aleutian Islands, to 

 Magdalena Bay, Lower California, Mexico ; Guadalupe Island ; shore 

 to 65 fathoms. Western Pacific south to Hong Kong and including 

 Japan ; Indo-Australia. In the Western Pacific to 335 fathoms. 



Contains six American species, one of which is new to science. 



Key to the American Species of the Genus Pugettia 



la. A smaller secondary spine between postorbital and hepatic spines 



at a slightly lower level venetiae 



lb. No smaller secondary spine between postorbital and hepatic 

 spines at a slightly lower level 



2a. Hepatic projection a transverse spine not joined with postor- 

 bital spine by a lateral expansion of the carapace. Legs very 

 long and slender 



3a. Postorbital projection an ovate lobe inclined in the 

 adult at a plane perpendicular to the hepatic spine 



dalli 



3b. Postorbital projection a slender spine inclined in the 

 same horizontal plane as the hepatic spine. Guadalupe 



Island only hubbsi 



2b. Hepatic projection a triangular tooth, joined completely or 

 incompletely with postorbital spine by a lateral expansion 

 of the carapace 



4a. Carapace smooth; sides subparallel. No constriction 

 between hepatic and branchial tooth. Legs short and 



stout producta 



4b. Carapace tuberculate ; sides not subparallel. A constric- 

 tion between hepatic and branchial tooth. Legs longer 

 than in 4a 



5a. Tubercles uneven. Hepatic tooth broadly joined to 

 postorbital, its outer margin trending toward the 

 longitudinal. Legs shorter than in 5b . gracilis 

 5b. Tubercles of a size. Hepatic tooth deeply separated 

 from postorbital, its outer margin trending to- 

 ward the transverse. Legs moderately long and 

 slender richi 



