EURYDICE. 307 



ISOPODA. . ^GIBM. 



NORM A LI A. 



Genus— EURYDICE. {Leach.) 



S L A B B E R I N A. {Van Beneden.) 



Elongate-ovate, moderately convex ; upper antennae very 

 short, cylindrical ; lower antennae long, with a multiartioulate 

 slender flagellum ; legs small ; uropoda with the inner division 

 larger than the outer, and hatchet-shaped. 



The only two characters given by Dr. Leach of this 

 genus, namely, the " abdomen compose de 5 articles," 

 and " yeux lisses," which are described as separating it 

 from Nelocira (in which the pleon is described as having 

 five segments, and the eyes being granular), and also 

 from Cirolana (in which the pleon has six segments, 

 the eyes being also granular), are unsatisfactory, and 

 have induced M. Milne Edwards to unite Nelocira with 

 Eurydice, especially as the figure given by Desmarest of 

 the former of these two genera represents it with a six- 

 jointed tail ; whilst Van Beneden expressly says that the 

 eyes are distinctly faceted in the animal, which he has 

 described and figured under the name of S/abberina agata, 

 and which is certainly identical with the Eurydice pul- 

 chra of Leach. 



Van Beneden, moreover, represents the tail as formed 

 of a large exarticulate mass, in which the five anterior 

 segments are only indicated by partial longitudinal mark- 

 ings on the skin, followed by a sixth narrow segment 

 and a seventh large terminal semi-ovate one. 



He also describes and figures the upper antennse as 



x 2 



