514 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



P. gibbesi was first taken in the Galapagos Islands by Velero III 

 collectors. 



A key to the genus Percnon is given by Schmitt ( 1939, p. 23). 



Family OCYPODIDAE 



Subfamily OCYPODINAE 



Genus OGYPODE Fabricius, 1798 



Ocypode gaudichaudii Milne Edwards and Lucas 



Plate 87, Fig. 7 



Ocypoda gaudichaudii Milne Edwards and Lucas, d'Orbigny's Voy. dans 

 I'Amer. Merid., vol. 6, Crust., p. 26, 1843; vol. 9, atlas, pi. 11, figs. 

 4-4b, 1847. 

 Ocypode gaudichaudii Rathbun, Proc. U.S. Nat. Mus., vol. 21, p. 603, 

 1898 ; Bull. 97, U.S. Nat. Mus., p. 373, pi. 129, fig. 1 ; pi. 130, fig. 1, 

 1918; not Zoologica, vol. 5, no. 14, p. 155, pi. 7, figs. 1-3. Boone, 

 Zoologica, vol. 8, no. 4, p. 267, fig. 96A, 1927 {not fig. 96B). Sivert- 

 sen, Med. fra det Zool. Mus., Oslo, nr. 38, p. 19, 1933. Crane, 

 Zoologica, vol. 25, p. 65, 1940. 

 Type locality. — Chile. 

 Type. — In Paris Mus. 



Range.— G\x\i of Fonseca, Salvador (MCZ), to Chile (MCZ) ; 

 Galapagos Islands (Albatross). 



Diagnosis. — Carapace subcylindrical, granulate. Front narrow, one- 

 seventh or less of carapace width. Eyestalks extending beyond cornea. 

 Fingers truncate. 



Material examined (47 specimens from 12 stations). — 

 10-32. James Bay, James Island, shore, Jan. 9, 1932, 3 males. 

 13-32. Darwin Bay, Tower Island, shore, Jan. 20, 1932, 1 female. 

 42-33. Opposite Kicker Rock, Chatham Island, shore, Jan. 31, 1933, 



6 males (1 photographed), 5 females. 

 58-33. Cormorant Bay, Charles Island, shore, Feb. 6, 1933, 1 male. 

 71-33. James Bay, James Island, shore, Feb. 12, 1933, 5 males, 2 fe- 

 males. 

 82-33. Conway Bay, Indefatigable Island, shore, Feb. 17, 1933, 1 



male. 

 85-33. North Seymour Island, shore, Feb. 18, 1933, 1 female, 

 88-33. South Seymour Island, shore, Feb. 19, 1933, 11 males, 2 fe- 

 males. 

 175a-34. South Seymour Island, shore, Jan. 22, 1934, 2 females. 

 332-35. Two miles south of Tagus Cove, Albemarle Island, shore, Dec. 

 10, 1934, 1 male. 



