138 RATHBUN 



SESARMA (HOLOMETOPUS) MIERSII Rathbun. 



Sesarma {Holometopjis) micrsii Rathbun, Proc. Biol. Soc. Washington, xi, 

 91, 1897, and synonymy. 



Rio Parahyba do Norte, Cabedello, on mangroves; one male. 



ARATUS PISONII Milne Edwards. 



Sesarma pisonii Milne Edwards, Hist. Nat. Crust., 11, jS, pi. xix, figs. 4 



and 5, 1837. 

 AraftispisonzM.ii.NE Edwards, Ann. Sci. Nat. (3), xx, 187, 1853. 



Rio Parahyba do Norte, Cabedello, on mangroves; five males, nine 

 females. 

 Lagoa do Norte, Maceio, on mangroves ; three females. 



PLAGUSIA DEPRESSA (Fabricius). 



Cancer depressus Fabricius, Syst. Ent., 406, 1775. 



Plagusia depressiis Say, Jour. Acad. Nat. Sci. Phila., i, 100, 181 7. 



Mamanguape stone reef ; one female. 

 Rio Goyanna stone reef; three females. 

 Pernambuco stone reef ; one female. 



Color. — Brilliant; for the most part a white ground thickly covered 

 with fine red dots ; also blotches of clear red.^ 



Family PILUMNID^. 



CARPILIUS CORALLINUS (Herbst). 



Cancer corallinus Herbst, Natur. Krabben u. Krebse, i, 133, pi. v, fig. 40, 



1783. 

 Carpilius corallinus \jEKCn, in Desmarest, Consid. sur les Crust., 104, 1825. 



Goyanna stone reef ; one male. 



CYCLOXANTHOPS DENTICULATUS (White). 



Xaniho denticulatus White, Ann. Mag. Nat. Hist. (2), 11, 285, 1848. A. 



Milne Edwards, Crust. R6g. Mex., 252, pi. xlv, fig. 2, 1879. 

 Cycloxanthops denticulatus Rathbun, Ann. Inst. Jamaica, i, 14, 1897. 



Stone reef at Boa Viagem ; one female. 



Coral reef, Maceio, Alagoas ; thirteen males, seven females. 

 Color. — Gay and not constant, varying from shades of light purplish 

 red through bright red to orange red. 



'Color notes have been made from specimens in formalin. 



