A REVIEW OF THE MYSIDACEA 55 



1912, he founded the species B. media, he made no reference to Ort- 

 mann's species nor any attempt to compare the two. It is true that 

 Ortmann's description is very meager, and, in itself, is insufficient 

 to identify his species, but a close examination of his figures reveals 

 very close agreement with Hansen's species. The details of the tel- 

 son in Ortmann's figure are incomplete, but the general form of the 

 telson, uropods, and antennal scale is the same in the two forms. 

 Ortmann's figure of the anterior end from the lateral aspect agrees 

 very closely with the one I give here, while the dorsal view of the 

 anterior end here given agrees closely with that given by Hansen 

 for B. media. It is impossible to point to any character that sepa- 

 rates the two supposed species, and I have united them under Ort- 

 mann's name, B. calif ornica. The species may be recognized by the 

 combination of the characters of the eye, the antennal scale, the tel- 

 son, and the uropods. 



BOREOMYSIS FRAGILIS Hansen 



Boreomysis fragilis Hansen, 1912, p. 191, pi. 1, fig. 3a ; pi. 2, fig. la. 



Occurrence. — Off Peru: Albatross stations 4652*, 4655*, 4676*, 

 4679* (type), all identified by Hansen. 



Distribution. — Eastern Pacific (Hansen, 1912) ; Indian Ocean (II- 

 lig,1930). 



BOREOMYSIS OBTUSATA G. O. Sars 



Boreomysis obtusata G. O. Saks, 1884, p. 35; 1SS5, p. 182, pi. 33, figs. 1-6.— 

 Ortmann, 1905, p. 971. 



Occurrence. — Hawaiian Islands: Albatross stations 4014*, 4018*, 

 identified by Ortmann (1905). 



Distribution. — Pacific Ocean, off Japan (Sars, 1884, 1885) ; Hawaii 

 (Ortmann, 1905). 



BOREOMYSIS MICROPS G. O. Sars 



Boreomysis microps G. O. Saks, 1884, p. 35; 1885, p. 184, pi. 33, figs. 7-10 — 

 Stephensen, 1913, p. 67; 1933, p. 11.— Waterman et al., 1939, p. 266, fig. 

 4c. 



Boreomysis subpellucida Hansen, 1905a, p. 8, figs. 5-8. 



Occurrence. — East coast of North America : Fish Hawk stations 

 952, latitude 39°55' N., longitude 70°28' W., 396 fathoms, August 

 23, 1881, 19 specimens; 994, latitude 39°40' N., longitude 7l°30' W., 

 368 fathoms, September 8, 1881, 2 immature; 1093, latitude 39°56' N., 

 longitude 69°54' W., 349 fathoms, August 11, 1882, 1 immature; 1122, 

 latitude 40°2' N., longitude 68°50' W., 351 fathoms, August 26, 1882, 

 3 immature; Albatross stations 2034, 1 adult female and 1 immature 

 specimen; 2044, 1 male, 1 female, and 1 immature specimen; 2045, 6 

 immature specimens; 2046, 1 immature specimen; 2047, 1 immature 



893476—51 5 



