Euphyllopoda 



g21 



showed transition to the biggest metanauphi (2-2§ mm.), of which I secured 

 that day about two dozen specimens, and which had nine to eleven pairs of 

 foliaceous legs, thus being practically the same stage as Sars' fig. 17 (Tab. VIII). 



Fig. 4. Branchinecta paludosa (O. F. Mueller). All about x 50, except e-f (about x 100). 

 a Side--view of head of male, 20 mm. long. Martin point, Alaska, July, 1914. 

 b " " genitalia, male, 20 mm. long. Martin point, Alaska, July, 1914. 



c Second antenna of female, 19 mm. long. Martin point, Alaska, July, 1914. 

 d Genitalia (half) of male, 28 mm. long. Herschel island, Y.T., August, 1914. 

 e. Side-view of nauplius, \ mm. long. Chantry island, N.W.T., June 17, 1916. 

 /. Abdominal-dorsal view of same larva as c „ „, „ t, ,,>,„,» 



g 2nd antenna of male, 7 mm. long. Bernard harbour, N.W.T., July 10, 1916. 

 ft. Ovisac of female, 9 mm. long (ventral view). Place, etc. as ff. ^^ „, ^ ,, ,„ 

 h Ovisac of female, 9 mm. long (ventral view). Bernard harbour, N.W.T., July 10, 

 i. Front^view of male, 15 mm. long. Bernard harbour, N.W.T., August 4, 1915. 



26549—34 



1916. 



