

^ 



THE ANNALS 



MAGAZINE OF NATURAL HISTORY. 



[EIGHTH SERIES.] 

 No. 69 SEPTEMBER 19L3. 



XXIX. — A Report on the Extra- Antarctic Amphipoda 

 Hyperiidea collected by the ' Discovery.' By Dorothy A. 

 Stewart, 13. Sc, Piatt Zoological Research Scholar, the 

 University of Manchester. 



[Plates IV.-VIL] 



The Amphipoda described below are, without exception, 

 representatives of the pelagic group Hyperiidea, which were 

 taken by the 'Discovery' Antarctic Expedition in tropical 

 and subtropical waters during the year 1901 on the outward 

 journey to the Pole. 



The majority of the specimens appear to have been captured 

 in surface tow-nets from localities in the tropical and South 

 Atlantic ; but there is, in addition, 'a single specimen of a 

 subantarctic species, Hyperiella antarctica, from a more 

 southerly latitude. 



The determination of the species of Hyperiidea in a 

 collection like the present one, consisting of isolated specimens 

 from scattered localities, is attended with considerable 

 difficulty — most of the species seem to be very imperfectly 

 known, and the whole group is badly in need of revision. 

 The material at hand is wholly inadequate to attempt such a 

 revision, and in the course of the work it has often been 

 necessary to identity specimens by locality rather than by 

 character, so trifling have been the points used in specific 

 distinctions. 



It is interesting to record the occurrence of an entirely in w 

 genus, Hemiscelus, represented by a specimen taken in the 



Ann. & Mag. X. Hist. Ser. 8. Vol. xii. 18 



