THE CRUSTACEA OF NEW JERSEY. 257 



Harger, Rep. U. S. F. Com., I, 1871-72 (1873), p. 569, PI. 5, %• 24. 



South shore of Long Island to the Arctic Ocean. 



Harger, Proc. U. S. Nat. Mus., II, 1879, p. 160. Pelagic (New Eng- 

 land). 



Harger, Rep. U. S. R Com., VI, 1880, p. 349, PI. 6, figs. 30-32. (Fire 



Island Beach, Long Island, Massachusetts to George's Bank and Nova 

 Scotia.) 



Description. — Body oblong, ovate, about two and one-quarter 

 times longer than broad. Abdomen a little over two-fifths en- 

 tire body length. Head broader than long, with front edge 

 slightly emarginated, and hind edge somewhat broader than 

 front. Eyes compound, large, round, placed at extreme lateral 

 edges. First antennae with basal joint not enlarged, and first 

 and second joints of about equal length and width, though sub- 

 equal third and fourth joints somewhat longer. First antennae 

 reach to end of second joint of peduncle of second pair. First 

 joint of second antennae very short, second and third joints sub- 

 equal, fourth one and one-half times longer than third and fifth 

 twice length of third. Flagellum formed of eight joints and 

 reaches as retracted to front edge of third thoracic segment. 

 Maxillipeds with palp of four joints. Thoracic segments sub- 

 equal, and first extends little beyond lateral edges of head on 

 each side, with lateral parts, also those following, bulging out- 

 ward and somewhat upward, thus forming an angle with portion 

 of segment to which adjacent. Epimera of all segments, from 

 second to seventh included, reach entire length of segment. 

 Epimera large, very wide, increase in width to seventh, which 

 broader than long. Legs all more or less similar. Free edges 

 of all joints and lower edge of propodus with hairs. Abdomen 

 with two short seg"ments and a long terminal one, with lateral 

 rudiments at its base of another partly coalesced segment. Ter- 

 minal segment with sides converging slightly to truncate end. 

 Color bright green or blue above in life, to darker in alcohol. 

 O'ften with metallic tints when seen in the water. Length 28 mm. 



Remarks. — A pelagic species, and thus world-wide in distribu- 

 tion. It lives at the surface and to a depth of ninety-one 

 fathoms, often occurring in masses of floating sea-weed. My 



17 MU 



