240 Bulletin Vanderbilt Marine Micseum, Vol. VII 



Genus: GEOGRAPSUS Stimpson 

 Geograpsus lividus (H. Milne Edwards) 



Material examined : Seven females and one male, taken at 

 Jebwar, Jaluit Island, Marshall Islands, December 30, 1928, by 

 the "Ara" World Cruise. 



Discussion: Again the graceful little scarlet shore-crab, 

 Geograpsus lividus appears, this time skittering with inimitable 

 gracefulness among twisted roots of the wind-sculptured trees of 

 the tidal zone of the Marshall Islands, an entirely new locality 

 for it, which extends the known geographic range much farther 

 west in the Pacific, the nearest archipelago from which it is 

 known being the Hawaiian Islands. The type was described from 

 the "Antilles" by Dr. Henry Milne Edwards (1837) and is depos- 

 ited in the Paris Museum d'Histoire Naturelle. It is well known 

 on both the eastern and western coasts of the Americas, in the 

 subtropic and tropic areas, from the Bermudas and southern 

 Florida to Sao Paulo, Brazil, also from the Cape Verde Islands, 

 in the Atlantic, and from Lower California to Chile, on the Pacific 

 coast. It was also taken in the Galapagos Islands by Dr. William 

 Beebe, director of the "Arcturus" expedition, 1925-1926, of the 

 Tropical Research Station, of the New York Zoological Society, 

 and is fully described and figured by the present writer in Zoo- 

 logica, N. Y. Zoological Society, 1927, vol. VIII, art. 4, p. 252, 

 figure 91. 



The present material is diagnostically identical with numer- 

 ous specimens from both east and west American localities, ex- 

 amined by the writer, some of which material was directly com- 

 pared with the type. The Marshall Islands specimens are typical 

 lividu^y and hence are not to be confused with the variety stormi 

 de Man^ reported from other eastern archipelagoes. 



''<iI09r<ipsus lividus variety stormi de Man, J. G., Zool. Jahrb. Syst., 189S, Bd. IX, p. 88; Ibid, 

 aa. A, pi. JO, ngs. 18-a and c. 



