ISOPODS OF NORTH AMERTCA. 187 



thoracic seg-ment; in Dana's species they are shorter than the basal 

 part (peduncle) of the external or second pair of antennie; in the larger 

 eyes, which are narrow and elongate instead of being round and very 

 small; in the longer uropoda, the branches in A. mia'ophthcdiaa 

 scarcely surpassing the abdomen; in not having the apex of the inner 

 branch "faintly arcuate oblitjuely" and in having all six segments of 

 the abdomen visible in a dorsal view, onl}' five being a^iparent in ^4. 

 mio'ophthalwa. 



This species differs from ^f^<ja longieornls Hansen in the shorter 

 second antenna\ which extend only to the middle of the third thoracic 

 segment, while in .1. longlcornls. the}' extend to the middle of the fifth 

 thoracic segment; in having the first three pairs of legs furnished with 

 a greater number of spines than in Hansen's species; in having both 

 branches of the uropoda terminating in a ])itid extremity, while in .1. 

 l<mgicornli< the extremities of the uropoda are acute, and in having the 

 apex of the terminal abdominal segment bitid instead of acutely pointed. 



A specimen from ofl' Santa Cruz Island, California, agrees with the 

 specimens from Alaska, with the exception that the second antennae 

 have fourteen instead of sixteen articles to the flagellum. The}- are, 

 however, just as long, extending to the middle of the third thoracic 

 segment. 



/EGA VENTROSA M. Sars. 



.Ega rentrosa M. Sars, Chr. Vid. Selsk. Forh., 1858-59, pp. 154-156. — Schicedte 



and Meinert, Natur. Tidsskr. (8), XII, 1879-80, pp. 87.5-377, pi. ix, figs. 7-8. 

 ^Egiochus tiordenskidldil Bovalliu^, Bihang Sv. Vet.-Akad. Handl., X, 1885, 



No. 9, p. 5, pi. i-ii. 

 yEga loveni Bovallius, Bihang Sv. Vet.-x\katl. Handl., XI, No. 17, 1886-87, pp. 



3-6, pi. I, figs. 1-10. 

 ^'Egiochus ventrosus Boy AhLivi^, Bihang Sv. Vet.-Akad. Handl., XI, No. 17, 1886- 



87, pp. 8-9. 

 ^Ega nordeiiskidldii Hansen, Vidensk. Meddel. Naturh. Foren. i KJ0bh., 1887-88, 



pp. 184-187. 

 ^ga veMrom G. 0. Sars, Crust. Norway, II, 1899, p. 64, i)l. xxvi, fig. 3. — 



Richardson, American Naturalist, XXXIY, 1900, p. 218; Proc. U. S. Nat. 



Mus., XXIII, 1901, p. 522.— Norman, Ann. Mag. Nat. Hist. (7), XIV, 1904, 



p. 432. 



Zwr/Z/^V-s-.— Greenland; latitude 59° 38' north, longitude 43^ 25' 

 west; also coast of Norway; Finland. 



Depth.— Vm fathoms; 203-312 fathoms (Norman). 



Body oblong-ovate, about two and one-third times longer than 

 wide, 13 mm. : 3t> nun. 



Head twice as wide as long, 3 mm.: (> nun. In the median line the 

 front is produced in a process which arches over the antenna\ separat- 

 ing the basal articles, and meets the frontal lamina or interantenual 

 plate at its upper end. The e3"es are large, irregularly oval, com- 

 posite, situated in the lateral angles of the head and extending along 



