Marine Copepoda 7 k 



Table VIII (Sta. 30a). 



Calanus hyyerhoreus IV 1 



Psetuiocalanus elongatus III 1 . 



Pseudocalanus elongatus IV 7 



Pseudocalanus elongatus V 42 



Pseudocalanus elongatus 9 11 



Pseudocalanus elongatus6' ■ 5 



Oithona similis 6 



Oncma conifera 1 



Harpacticus superflexus 1 



74 



Station 41p: Bernard harbour, Dolphin and Union Strait, Northwest 

 Territories, beach water, in the catcher, August 14, 1915. One female 8-25 

 mm. long without the fan of caudal setse, 10 mm. long including the caudal 

 setae. A coloured drawing by Mr. Johansen shows the body nearly uniformly 

 red, the anterior antennae deep red. 



Station 41m: Bernard harbour, end of August, 1915. Four mature females 

 were taken from the stomach of a Western Charr or Dolly Varden trout, Salve- 

 linus malma, W. I wrote about this interesting find to Mr. Johansen who 

 kindly informed me that practically all the specimens of the Dolly Varden trout 

 which he obtained in the north were caught in salt water. A large lake east of 

 Bernard harbour, contained individuals which had not succeeded in getting 

 back to the sea before the creek froze up, so that they had to stay in the lake 

 for the winter. 



3. Calanus tonsus Brady. 

 G. S. Brady: Report on the Copepoda. Challenger Rep., vol. VIII, p. 34, 1883. 



This is a normal-looking Calanus, like C. finmarchicus, but characterized 

 by the absence of basal serratures on the fifth pair of legs. It was taken by 

 the Challenger Expedition chiefly in the southern hemisphere but also, in com- 

 pany with Calanus propinquus Brady, in the surface tow-net at station 241, 

 between Yokohama and Sandwich islands, over a depth of 2,300 fathoms in 

 lat. 35° 41' N., long. 157° 42' E. 



Three damaged specimens of C. tonsus, stage V, were contained in the 

 gathering from C. A. E. station 13a, b, c, three surface tows of five minutes 

 each, lat. 54° 30' N., long. 159° 42' W., July 1, 1913. The gathering was scanty 

 but included Acartia tumida n. sp., Acartia longiremis, and Harpacticus uniremis. 



C. tonsus was the species referred to without name in my report on an 

 investigation into the Pacific Halibut Fisheries.' I saw numbers of them in an 

 inlet to the south of Tassoo harbour, on the west coast of Moresby island, south 

 of the San Christoval mountains. Queen Charlotte islands. In the evening 

 of May 22, 1914, "they were rising to the surface amongst the kelp, one by one, 

 then swimming round in spirals, clockwise, causing distinct widening ripples 

 at the surface." These were also immature. From the peculiar distribution 

 of this species it may be anticipated that future investigations will disclose a 

 special connection with oceanic currents. 



'Published in the Canadian Bluebook: Contributions to Canadian Biology (1914), Ottawa, 1916. 



