ISOPODA. 

 NORMALIA. 



PHRYXUS GALATHEJ;. 249 



BOPYRID^E. 



PHRYXUS GALATHEJ1. 



Male. Elongate ; with the segments of the pereion rounded at the sides, 

 especially towards the hind margin of each. Segments of the pleon distinct, 

 transverse, rounded at the sides of each, narrower than the hinder segments 

 of the pereion, terminal joint truncated at its extremity. 



Female. Ovate, flattened, and slightly unsyinmetrical, ovigerous scales 

 of moderate size, finely ciliated on the margin. Pleon nearly triangular, 

 joints transverse, furnished with a number of elongated corrugated fleshy 

 cylindrical appendages, pointed at the tips. 



Length of the male one-sixth, of the female one-fourth, of an inch. 



Pleurocrypta Oalathece. HESSE, Ann. Sci. Nat., 3rd ser. vol. iii. pi. 4. 



THIS species nearly resembles Ph. longibranchiatus in 

 the general form of the female and in the elongated lobes 

 of the tail of the same sex. It differs, however, in its 

 habitat, being parasitic upon Galathea intermedia, and in 

 the distinct articulations of the tail of the male. Our 

 specimens of the two sexes are, however, preserved in 



