PART 1 GARTH : PACIFIC OXYRHYNCHA 253 



fathoms, G. M. Smith (G. M. Smith) ; Victoria, G. M. Dawson (S. I. 

 Smith), R. Middleton (Whiteaves, S. I. Smith), C. F. Newcombe 

 (Newcombe; Rathbun, 1893a); Parry Bay (Hart, 1930). 



Washington: Brown Island, San Juan Islands, 20-55 fathoms 

 (Way) ; off Cape Flattery, 27-40 fathoms, and near Port Townsend, 

 Admiralty Inlet, 15-26 fathoms, Albatross (Rathbun, 1925); Puget 

 Sound (Stimpson), D. S. Jordan (Rathbun, 1893a), Bashford Dean 

 (Caiman), W. A. Herdman (Walker) ; Port Orchard, O. B. Johnson, 

 and Dockton, Albatross (Rathbun, 1893a, 1925). 



California : Humboldt Bay, Scripps Institution ; off Farallon Islands, 

 Bureau of Fisheries; and off Santa Cruz, 21 fathoms, Albatross (all 

 Rathbun, 1925); Monterey Bay (Doflein; Weymouth), H. Heath 

 (Rathbun, 1925) ; Monterey, D. S. Jordan, Dr. Canfield (Rathbun, 

 1893a), H. N. Lowe (Rathbun, 1925) ; Pacific Grove, J. O. Snyder, 

 J. C. Brown (Rathbun, 1925) ; off Santa Barbara, 21-26 fathoms, and 

 off Santa Rosa Island, 38-45 fathoms, Albatross (Rathbun, 1925) ; off 

 Venice and off Point Fermin, Anton Dohrn (Rathbun, 1925) ; Laguna 

 Beach (Hilton), W. A. Hilton (Rathbun, 1925) ; San Diego Bay, 12 

 fathoms, Albatross (Rathbun, 1925) ; San Diego, H. Hemphill (Lock- 

 ington) ; southern California, W. H. Dall (Rathbun, 1893a). 



Fossil: California Pleistocene: Deadman Island, San Pedro (Rath- 

 bun, 1926). 



Atlantic analogue: None. A Pacific north temperate species. A cog- 

 nate species, Scyra compressipes Stimpson, occurs off northern Japan. 



Diagnosis: Carapace with entire margins, strong branchial, cardiac, 

 and gastric tubercles. Outer borders of rostral spines arcuate. A lobe on 

 outer margin of basal antennal article and a tooth in line with lateral 

 border of buccal cavity. Merus and carpus of cheliped tuberculate, manus 

 of old males with a large tooth in gape. Male first pleopod with pointed 

 tip opposed by two lobate projections, one on either side of a median 

 longitudinal cleft in which lies a shallow intermediate lobe. 



Description: Carapace pyriform and furnished with rounded tuber- 

 cles. Median region tumid and separated from the cardiac and branchial 

 regions by a conspicuous depression ; an acute tubercle near the center of 

 the median region ; behind it a larger and more obtuse tubercle. Branchial 

 regions tumid and bearing a large, projecting tubercle; in front of this 

 an elevated prominence usually bearing several small tubercles, often 

 smooth. A large tubercle on the cardiac and a smaller one on the intestinal 

 region. Rostrum short, the horns ovate-lanceolate. Two spines or teeth 



