22 Canadian Arctic Expedition, 1913-18 



Plate V. 



Cytheriies insignipes G. O. Sars, n. gen. and sp. 



Adult female, seen from left side. 



Same, dorsal view. 



Right valve with enclosed body, more highly magnified; left valve removed in order to show 



the several appendages in their natural position. 

 Anterior antenna. 

 Posterior antenna. 

 Lips seen from left side. 



Chitinous frame of the posterior lip, seen from above. 

 Mandible with palp. 



Extremity of same, more highly magnified, to show the dentation of the cutting edge. 

 Mandible with vibratory plate. 



Same, extremity of the palp, more highly magnified. 

 Right series of legs. 

 Extremity of a leg, more highly magnified, to show the structure of the subcheliform hand. 



(September, 1925.) 



