282 BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



Measurements. — Male (50962), length of carapace on median line 

 17.4, to end of horns 19.2, width of carapace 13 mm. 



Range. — From Santa Monica Bay, California, to Magdalena Bay, 

 Lower California, and Gulf of California, Mexico. Shallow water to 

 50 fathoms. 



Material examined. — 



CALIFORNIA 



Venice Breakwater; Anton Dohrn; from Venice Marine Biol. Sta.: 

 West end under rocks; January 3, 1912; P. S. Barnhart; 1 female 

 (50217). February 19, 1913; J. Ross Beck; 1 male, soft shell (50219). 

 October 16, 1913; P. S. Barnhart; 1 ovigerous female (50221). Octo- 

 ber 29, 1913; P. S. Barnhart; 5 males, 1 female (50218). 1 male 

 (45585). 



Between Venice and San Pedro; June 18, 1913; Anton DoJini (P. 

 S. Barnhart); from Venice Marine Biol. Sta.; 1 male (50311). 



Point Vincente; from rocks; February, 1918; H. N. Lowe; 2 males 

 (51123), nearly of a size, one having well developed chelipeds, the 

 other feeble ones. 



Reef Point; July 6, 1917; E. P. Chace; 1 ovigerous female (53985). 



San Pedro: H. N. Lowe; 1 male (32971). Vicinity of: E. P. 

 Chace; 1 male (50962). 



Long Beach; H. N. Lowe; 6 males, 1 female (46777). 



Laguna Beach; W. A. Hilton: 1 male (48908). 1 male (48984), 

 returned to sender. 1 male, 1 ovigerous female (50596) . 



Santa Catalina Island: Isthmus Harbor; Anton DoTirn; from Venice 

 Marine Biol. Sta.; 2 males, 2 females (50005). Catalina Harbor; 

 W. H. Dall: Beach; 18 specimens (16203); 1 male is holotype of 

 P. clausa. Depth, 30 to 40 fathoms; 1 male (16204). Avalon Bay; 

 October 22, 1910; Anton DoJirn (P. S. Barnhart); from Venice 

 Marine Biol. Sta.; 1 young female (50220). Off Catalina Island; 50 

 fathoms; H. N. Lowe; 1 male (29957). 



San Clemente Island; H. N. Lowe: 1 male (29956). 



La Jolla: March 6, 1898; Albatross; 1 female (21770). Rocks 

 above Scripps Institution, January 29, 1915; 2 9 (Scripps Inst.). 



San Diego: 10 fathoms; Henry Hemphill; 1 female (6385). C. R. 

 Orcutt; 6 specimens (16206). Rosa Smith, 1 female (16998). U. S. 

 C. S. S. Hassler; 1 male (2046, M. C. Z.). 



San Diego County; C. R. Orcutt; 1 male (16205). 



Exact locality not given; Anton Dohrn; from Venice Marine Biol. 

 Sta.; 1 female (50312). 



MEXICO 



Gulf of California, near upper end; lat. 31° 22' 00" N.; long. 114° 

 07' 45" W.; 17 fathoms; G. brk. Sh.; temp. 65.2° F.; March 25, 

 1889; station 3026, Albatross; 1 ovigerous female (16349). 



