THE SPIDER CRABS OF AMERICA 179 



about 45 degrees. Rostral liorns more slender than in P. richii, 

 widely divergent. Preocular tooth acuminate. 



Antennae exceeding rostrum; a large lobe on outer margin of basal 

 article. Chelipeds strong; merus with a prominent thin and irregular 

 carina on margins; carpus strongly carinate above and on inner mar- 

 gin, outer and upper surfaces irregularly ridged; hand large, com- 

 pressed, margins thin; palm nearly as broad as long; fingbrs gaping, 

 a tooth near base of dactyl, and one on pollex toward distal end of 

 gape. Legs much more slender than in P. richii of equal size; fii-st 

 pair about as long as, or longer than, the chelipeds; three succeeding 

 pairs short, decreasing regularly in length; margins fringed with club- 

 shaped setae. 



Females differ from adult males in having a broader and more 

 ovate carapace, three distinct branchial areolations, when the pubes- 

 cence is removed, and in the much 

 more swollen gastric region. 



Color. — Specimens in formalin, 

 from Laguna Beach, are largely 

 dull red, with some white; legs more 

 or less banded. 



Measurements. — Male (29951), 

 total length of carapace 17, width 



13.4 mm. Fig. 67.— Puoettia dalu, male (29951), ante- 



Ranqe.—FTom Santa Cruz Island, ^'""^ "°^"°^ '^ profile to show flat side 



-^ ■ OF postorbital lobe, X 4 



Cahfornia (lat. 34° N.), to San 



Geronimo Island, west coast of Lower California, Mexico (about 

 lat. 29° 40' N.). wShore to 58 fathoms. 

 Material examined. — 



CALIFORNIA 



Off Santa Cruz Island; lat. 34° 00' 00" N.; long. 119° 29' 30" W.; 

 30 fathoms; P.; Feb. 6, 1889; station 2945, Albatross; 1 young female 

 (17628). 



Between Venice and Rocky Point, Santa Monica Bay; Aug. 11, 

 1914; Anton Dohrn; 1 male (50203), from Venice Mar. Biol. Sta. 



Point Vincent; from rocks; Feb., 1918; H. N. Lowe; 1 male (53342). 



Off Point Fermin, San Pedro; March 14, 1914; Anton Dohrn; 

 5 ovigerous females (50200) , from Venice Mar. Biol. Sta. 



San Pedro; H. N. Lowe; 1 male (32972). 



Off Wihnington; lat. 33° 38' 45" N.; long. 118° 13' 45" W.; 20 

 fathoms; gy. S. brk. Sh.; Feb. 5, 1889; station 2942, Albatross; 1 

 large male (18190). 



Laguna Beach; W. A. Hilton; 2 males, 5 females (4 ovigerous, 

 1 young) (48909, 50607-50609). 



