PART 1 garth: pacific oxyrhyncha 117 



front of the angles of the buccal cavity, a few visible in dorsal view. 

 Orbital arch finely spinulous. Rostrum a long, slender, gradually 

 diminishing spine, varying from three-fifths, in the largest, to one-half, 

 in the smallest, as long as the postrostral portion of the carapace. 

 Antennae overreaching the rostrum, filiform, the movable articles of 

 the peduncle, as well as the flagellum, unusually slender; the basal 

 article with laminate anterior and outer margins, the latter spinulous. 



Chelipeds moderately enlarged, spinulous, especially on and near 

 the margins, and hairy, the hairs entangling mud, foraminifera, etc. 

 A spine at outer distal end of merus; a stout, spinuliferous knob on 

 outer surface of carpus; chela widest behind middle of palm, thence 

 tapering to end of fingers; gape correspondingly narrow, one tooth on 

 the dactyl at middle of gape occasionally somewhat enlarged. First 

 ambulatory leg three times (in large specimens) as long as carapace 

 with rostrum; merus and propodus equal, nearly twice as long as 

 carpus and three times as long as dactylus; dactylus very slender and 

 slightly curved. Dactyli of remaining legs falcate. In the second leg 

 the carpus and propodus equal, nearly two-thirds as long as merus, 

 and two and a half times as long as dactylus. 



The sternum deeply grooved between segments, the tubercles in 

 line with base of chelipeds very large and flattened anteroposteriorly. 

 (Rathbun, 1925, modified, of Podochela barbarensis) 



Supplementary description: Merus of external maxilliped sub- 

 cordiform, longitudinally grooved, outer angle obtusely rounded, inner 

 angle acutely produced as a thin blade, margins spinulous, and inserting 

 deeply into the hairy and spinulous ischium; palpus coarse, pediform, 

 first two segments inflated, first prismatic, terminal segment slender, 

 cylindrical ; all segments hairy. 



Male abdomen with two median setose tubercles on first segment, 

 segments 2-4 smooth and bare, segments 5 and 6 (including fused 7th) 

 hairy and tuberculate, tip broadly triangular. 



Material examined: 107 specimens from 40 stations, of which 19 

 are California, 13 west coast of Lower California, and 8 Gulf of 

 California. (See Table 19) From Point Mugu, California, to San 

 Cristobal Bay, Lower California, and from the north end of Angel 

 de la Guarda Island to Outer Gorda Bank, Gulf of California. 18-110 

 fathoms in the open Pacific; 51-125 fathoms in the Gulf of California. 



Measurements: Largest complete specimen, a male: length 20.9 

 mm, width 11.2 mm, rostrum 8.3 mm, cheliped 21.8 mm, chela 8.7 mm, 

 dactyl 4.8 mm, first ambulatory leg 64 mm, second 49 mm, third 41 



