646 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



whether any of those from the cable anchored in 75 meters were 

 cHnging to it far below the surface. 



Planes cyaneus Dana 



Planes cyaneus Dana, 1852a, p. 250. — Chace, 1951, pp. 65-103, figs, lb, 2b, e, h, 



m-o, 3i-n. 

 IVaruna atlantica Melliss, 1875, p. 203. 



Material: Off northeast coast of St. Helena; from drifting kelp; 

 Nov. 25, 1960; 1 female. — Sandy Bay; from kelp on beach; Dec. 29, 

 1962; 1 young female. — Off Rupert's Bay; buoy; 0-2 meters; Feb. 11, 

 1963; 3 males, 5 females (4 ovigerous). — James Bay; collected by 

 skindiver; February 1964; 1 female. 



Measurements: Carapace lengths of males, 14.0-22.7 mm.; of 

 females without eggs, 6.9-26.0 mm.; of ovigerous females, 14.2- 

 16.9 mm. 



Remarks: Three or four of the specimens found on the buoy off 

 Rupert's Bay were blue in Ufe (white in alcohol). The others were 

 mottled light to dark brown in alcohol, and three of them had a large, 

 whitish patch extending over much of the anterior part of the carapace, 

 similar to the color pattern illustrated for Planes minutus (Linnaeus, 

 1758) in Murray and Hjort (1912, pi. 6) and Sivertsen and Holthuis 

 (1956, pi. 2). 



The "pretty Httle bright-blue Crab" from the hull of a ship, which 

 Melliss (1875) recorded as Vanma atlantica (a name apparently 

 coined by Spence Bate), may represent the fu'st Atlantic record of 

 P. cyaneus. The fact that the species was represented in the Love- 

 ridge collection by material taken in 4 different years indicates that 

 its occurrence in the South Atlantic is more than transitory. 



Distribution: On floating objects in the open sea throughout the 

 eastern Pacific and presumably westward into the Indian Ocean; St. 

 Helena. Probably some or all of the South African records of P. 

 minutus cited by Barnard (1950, p. 120) should be referred to this 

 species. 



Planes ntarinus Rathbun 



Planes marinus Rathbun, 1914, p. 120, pi. 3. 



Pachygrapsus marinus. — Chace, 1951, pp. 65-103, figs, Ic, 2c, f, i, p-r, 3o-t. — 



Hart, 1959, p. C 31.— Edmondson, 1959, p. 169, fig. 8b.— Dell, 1963, pp. 179, 



180, fig. 1. 



Material: Off northeast coast of St. Helena; from drifting kelp; 

 Nov. 25, 1960; 1 male, 2 young females. — Off Rupert's Bay; buoy; 

 0-2 meters; Feb. 11, 1963; 2 ovigerous females. 



Measurements : Carapace length of male, 9.1 mm. ; of young females, 

 4.9 and 5.4 mm.; of ovigerous females, 13.4 and 15.1 mm. 



