14 k 



Canadian Arctic Expedition, 1913-18 



johanseni is subequal to that of E. herdmani, but the terminal joint is shorter 

 than in herdmani. Again, in E. herdmani, joint 12 carries a long curved ungui- 

 form spine commonly applied to the face of the antenna, though capable of 

 being extended forwards. In E. johanseni, joint 12 carries a spine standing out 

 at right angles to the face of the antenna, less than half the length of that of 



Figs. 7-10. Details of right antenna of male. 



7. E. johanseni, distal joints. 



8. E. herdmani, same. 



9. E. johanseni, spine on joint 12. 

 10. E. herdmani, same. 



herdmani, slightly curved and minutely bifid or flaring at the tip. Other spines 

 occur on the proximal joints but only the spine on joint 12jhas specific value. 

 In both species the right antenna pres&nts a proximal as well as a^distal swelling 

 with short narrow joints intervening. 



Fig. 11. E. johanseni 6. Left p. .5 B2 

 Fig. 12. Same. Fifth legs from behind. 



Fifth legs (p 5 cf): the left B2 shows a strong ental protuberance (Fig. 11); 

 the inner margin of the right B2 is entire; the terminal joint of the left foot 

 with subdistal spoonshaped expansion (Fig. 12). In E. herdmani there is a 

 prominent cylindrical ental tubercle at the proximal end of the right B2. 



