' THE CRUSTACEA OF NEW JERSEY. 277 



A single species from our shores, remarkable for the very 

 large compound eyes. This genus is apparently not well under- 

 stood, and may be merged with Livoneca, of which it has been 

 suggested as possibly the young. 



/Egathoa oculata (Say). 



Plate 84. 



Cynwthoa oculata Say, Journ. Acad. Nat. Sci. Phila., I, 1818, p. 398. St. 

 John's River, Florida (on Archosargus probatocephalus) . 



Cynwthoa {Mga) oculata De Kay, N. Y. Fauna, Crust., VI, 1844, p. 48, (on 

 Say). 



Mgathoa oculata H. Richardson, Bull. U. S. Nat. Mus., No. 54, 1905, p. 217, 

 figs. 219-221. Connecticut to West Indies. Crisfield, Maryland. 



Mgathoa lobi'ginea Harger, Am. Journ. Sci. Art., (3) XV, 1878, p. 376. Sai'in 

 Rock, near Neiv Haven, from mouth of Loligo pealii. 



: Harger, Proc. U. S. Nat. Mus., II, 1879, p. 161. New Haven, Connecti- 

 cut (in mouth of squid). 



Harger, Rep. U. S. F. Com., VI, 1878 (1880), p. 393, PL 10, fig. 66. 



New Haven and Fort Macon. 



H. Richardson, Am. Nat., XXXIV, 1900, p. 220. Cape Cod to North 



Carolina. 



~ H. Richardson, Proc. U. S. Nat. Mus., XXIII, 1901, p. 526. Connecti- 

 cut to Florida. 



M. J. Rathbun, Occas. Papers Boston Soc. Nat. Hist., VII, 1905, p. 3S 



(Savin Rock). 



Description. — Body elongated, nearly four times longer than 

 wide. Head broad as long, a little narrower in front than be- 

 hind, and front edge widely rounded. Hind edge of head formed 

 in three slight equal lobes. Eyes very large, conspicuous, oval, 

 compound, placed in hind lateral angles of head, and extend along 

 sides of head almost to front lateral angles. First pair of anten- 

 nae formed of eight joints, and extend to hind edge of head. 

 Second pair of antennae formed of nine joints, and extend to mid- 

 dle of first thoracic segment. Basal joints of first antennae not 

 close, well separated. Maxillipeds with palp of two joints. Palp 

 of mandibles with three joints. First segment of thorax longest, 

 second and third equal, and four following segments all equally 

 shorter. Epimera distinctly separated on all segments, except 

 first, and extend full length of lateral edges. Abdomen wide as 



