TANAIDACEA AND ISOPODA—TATTERSALL. 211 



Sub-family AEG-INAE. 



Genus AEGA, Leach. 



17. Aega antarctica, Hodgson. 



Aega australis, Richardson, 1906 (2), p. 4, text-figs. 8-11. 



A. antarctica, Hodgson, 1910, p. 17, pi. II; Richardson, 1913, p. 4. 



Non A. australis, Whitelegge. 



Occurrence. — Station 294, Eoss Sea, 74° 25' S., 179° 3' E., 158 fathoms, bottom 

 fauna, two specimens, 10 and 24 mm. 



Station 331, off Cape Bird Peninsula, entrance to McMurdo Sound, 250 fathoms, 

 bottom fauna, five specimens, 9-19 mm. 



Station 338, 71° 13' S., 164° 18' E., 207 fathoms, bottom fauna, one ovigerous 

 female, 18 mm. 



Station 339, 77° 5' S., 164° 17' E., 140 fathoms, bottom fauna, eleven specimens, 

 15-24 mm. 



Station 349, off Butter Point, western shore of McMurdo Sound, 80 fathoms, 

 bottom fauna, one female, 22 mm. 



Station 356, off Granite Harbour, entrance to McMurdo Sound, 50 fathoms, 

 bottom fauna, seven specimens, 18-27 mm. 



2.3. 1911, washed up on the beach at North Bay, one specimen, 23 mm. 



Remarks. — This species is closely allied to the new species described below, 

 but is distinguished by its smaller eyes, and by the armature of the anterior thoracic 

 limbs, as well as by its relatively smaller size. I have examined the " Discovery " 

 specimens named by Hodgson and find that they all belong to the small-eyed 

 form. Richardson's species is, I think, the same as Hodgson's. It agrees with the 

 latter in the armature of the thoracic limbs, and the eyes are certainly smaller than in 

 the new species I describe below. 



18. Aega glaciaUs, sp. nov. PI. IV, figs. 1-10. 



Occurrence.— ^i&iio\i 194, off Gates Land, 69° 43' S., 163° 24' E., 180-200 fathoms, 

 bottom fauna, one male, 27 mm., and one female, 34 mm. 



Station 314, 5 miles north of Inaccessible Island, McMurdo Sound, 222-241 

 fathoms, bottom fauna, three specimens, 16-25 mm. 



Station 316, off" Glacier Tongue, about 8 miles north of Hut Point, McMurdo 

 Sound, 190-250 fathoms, three ovigerous females, 34-37 mm. ; nine other specimens, 

 14-25 mm. (types). 



Station 339, 77° 5' S., 164° 17' E., 140 fathoms, bottom fauna, one female, 30 mm. 



Station 355, 77° 46' S., 166° 8' E., 300 fathoms, bottom fauna, three specimens, 

 17-29 mm. 



Descriftion. — This new^ species is so closely related to A. antarctica, Hodgson, 

 that it is perhaps most easily described by pointing out the differences between the two. 



