No. 10 GARTH : BRACK YURAN FAUNA OF THE GALAPAGOS 423 



Measurements. — Largest male : length 56 mm, width 84 mm, cheliped 

 115 mm, chela 60 mm, dactyl 31.5 mm. 



Habitat. — Rocky shore and shoal water. 



Depth. — 4-20 fms. 



Rernarks. — This largest of swimming crabs in the Galapagos Islands 

 was obtained once in a dredge haul, twice by shore parties, and three times 

 in lobster traps. Four spines on the hand serve to distinguish the young of 

 this species from P. (A.) angustus Rathbun. 



Subfamily PODOPHTHALMINAE 



Genus EUPHYLAX Stimpson, 1860 



Euphylax dovii Stimpson 



Plate 72, Figs. 1, 2 



Euphylax dovii Stimpson, Ann. Lye. Nat. Hist. New York, vol. 7, p. 226 

 (98), pi. 3 (not 5), figs. 5 and 5a, 1860. Rathbun, Bull. 152, U.S. 

 Nat. Mus., p. 147, pi. 65, 1930. 



Type locality. — West coast of Central America. 



Type. — Not extant. 



Range. — ^West coast of Mexico? (A. Milne Edwards), Panama 

 (Ward), Talcahuano, Chile (MCZ). 



Diagnosis. — Orbits occupying whole of anterior border of carapace 

 except for narrow front. Eyes borne on long stalks. Anterolateral margins 

 5-spined. 



Material examined. — 



9-32. Tagus Cove, Albemarle Island, surface at light, Jan. 6, 1932, 

 12 specimens (1 photographed). 



Measurements. — Largest specimen, male: length 32 mm, width 52 

 mm, cheliped 83 mm, chela 42 mm, dactyl 23 mm. 



Habitat. — Pelagic. 



Depth. — Surface. 



Remarks. — E. dovii undoubtedly occurs in great numbers in the 

 Galapagos Islands during the seasonal invasion of the warmer waters of 

 El Nino current from the Bay of Panama. Countless numbers of these 

 periscopic-eyed swimmers were observed at Cocos Island in 1938. They 

 were being gathered by fishermen into bait tanks to be released later as 

 chum for tuna in lieu of sardines. 



E. dovii is now recorded from the Galapagos Islands. 



