324 



263 



Fig. 129. Hyperia galba (Montagu) (after Sars, 1890). 



1889: \59. —spinigera (non Bovallius, 1889); Barnard, 1930: 412; 

 Thorsteinson, 1941: 87. 



Length of sexually mature specimens in the Arctic seas up to 20 mm, 

 in Antarctic waters exceeds 20 mm, and in the remaining part of the 

 species' area of distribution ranges from 9-15 mm. 



The head is equal in length to the first two somites of the pereon. 

 The interantennal lobe is developed to a variable extent. The flagellum 

 of antennae I in females is uncinate, but in antennae II very thin. The 

 length ratio of the segments of the palp of the mandibles is 10:17:21 and 

 the distally tapering 3rd segment is almost straight. 



