568 RICHARDSON 



margin. At the base of this segment there is a deep depression. The 

 uropods do not surpass the terminal segment. The outer branch is 

 narrow, lanceolate ; the inner branch is broad, truncate ; both branches 

 are equal in length. 



The color of the entire body is a dark bluish gray with the excep- 

 tion of the terminal segment and the uropods, which are a light 

 yellow. 



One specimen was taken from the fin of a dolphin ( Coryphcena 

 hippurus) in 5° N. lat., 90° W. long. 



Type U. S. National Museum. Cat. No. 25173. 



Meinertia gaudichaudii (Milne-Edwards). 



Cyntothoa gatidichaiidii Vi\\v\e.-'^<lwAx^'i, Hist. Nat. Crust., iii, p. 271. 

 Ceratothoa rapax Heller, Reise Novara, Crust., p. 146, pi. xii, f. 17. 

 Ceratothoa gaudichaudii Schicedte and Meinert, Naturhistorisk Tidsskrift 



(3), XIII, 1881-83, P- 335-340, pi. XIII. figs. 11-15, pi. XIV, figs. 1-5. 

 Meinertia gaudichaudii Stebbing, Hist. Crust., 1893, p. 354. 



Black Bight, Albemarle Island, Galapagos Islands; 200 miles north 

 of Wenman Island, Galapagos Islands. 



Family LIGIID^. 

 Ligia exotica (Roux). 



Ligia exotica, Roux, Crust. Medit., p. 3, pi. xiii, fig. 9. — Budde-Lund, Crust. 



Isop. Terrestria, pp. 266-268, 1885. 

 Ligia gaudichaudii, Milne-Edwards, Hist. Nat. des Crust., iii, p. 157. — 



Dana, Exp. Ex., p. 741, pi. xlix, figs. 6*"''. — Nicolet in Gay's Hist, 



Chile, III, p. 265. 

 (?) Ligia {Italica) coriacea, Koch, Deutschl. Crust., p. 36. 



Guadalupe and Clipperton Islands. 



