Fig. 4. Species of the Antarctic macroplankton. 



a, Parathemisto gaudichaudi, x 4. 



b, Cyllopus sp., x 3. 



c, Eusirus antarcticus, x 4. 



d, Vibilia antarctica, x 4. 



e, Primno macropa (after Stebbing), x 4. 

 /, Antarctomysis maxima, x 2. 



g, Euphausia superba, x ij. 

 "i, Rostrum of E. frigida. 



gz, Rostrum of E. vallentini. 



£3, Rostrum of E. triacantha and E. crystallorophias. 



£4, Abdominal segments 3-5 of E. frigida and E. 



crystallorophias. 

 £5, Abdominal segments 3-5 of E. vallentini. 

 g6, Abdominal segments 3-5 of E. triacantha. 

 h, Thysanoessa macrura, x 3. 



