192 WILLEY. 



Of the great red oily Eiichada norvcgica, the mature females of which 

 measured up to 8 mm. in length, and the males a little more than 

 6 mm., 46 examples were observed, distributed as under: — 



Euchaeta norvegica 9 37 1 "Prince" 



d" 4 [ Station 6, 



« " cf (jun.) 4 February 23, 



" " 9 (jun.) 1 J 1917. 



Some of the females were carrjv'ing an ovisac laden wnth eggs, others 

 had a spermatophore attached to the genital segment, and two of 

 the males each held a spermatophore by the cheliform extremity of 

 the left fifth foot. The relatively large proportion of males is notice- 

 able. During the Canadian Fisheries Expedition (1914-15) only six 

 males were observed altogether at the stations of the C. G. S. 

 " Acadia," southeast of Nova Scotia and onlv in one vertical haul as 

 many as two were seen; the remainder were found singly. 



A still greater proportion of Euchaeta males appeared in the stomach 

 contents of the coal -fish {Gadus or PoUachius virens), locally known as 

 the "pollack," taken off Wilson's Beach, Campobello Island, at the 

 entrance to Passamaquoddy Bay on August 2—4, 1916. In the first 

 one which I examined, the bulk of the contents consisted of the Schizo- 

 pod, Mcganydiphancs norvcgica; ■ there were also some of the smaller 

 species, Rhoda or Thjsanoessa inermis, some Caprellids, fish remains, 

 several Sagittae, and 56 Euchaeta, namely: — 



Euchaeta norvcgica 9 27 



& 7 



« « Y 22 



Of the females, 4 retained the egg-sac. 



Another "pollack" stomach was full of "red feed" consisting of a 

 densely packed mass of Euchaeta mixed with an approximately equal 

 quantity of Schizopod remains half digested. Euchaeta composed 

 a moiety of the total content. One intact Meganyciiphancs was 

 present. The following percentage of the Copepod content was made 

 out very clearly: — 



Calanus finmarchicus V 1 per cent. 



c? ' 1 



" hyperboreus V 2 " 



