Marine Copepoda 35 k 



Station 42p. See under Pseuducalanus for position. 



Table XVII (Sta. 42p). 



Psevdgcalanus elongatus. One 9 . 



Eurytemora herdmani. Onecf. 



Oithona similis. Four. 



Harpacticus uniremis. Seven (c? and 9 ). 



Idycea furcaia. Two 9 . 



Danielssenia stefanssoni. Five females. 



Length of one 9,1-2 mm., anterior antenna 8-jointed; setse with penicillate 

 tips on p 1 Re 3, p 1 Re 2, and p 1 Ri 3. 



Station 42y. See Table X. 



Station 42z. Dolphin and Union strait, off Bernard harbour, depth 17 

 feet, ice 2% feet thick, midnight, water temperature 29-2° F., three vertical 

 hauls bottom to surface, December 12, 1915. 



Table XVIII (Sta. 42z). 



Psevdocalanus elongatus, males and females. 



Metridia longa, young (2-jomted urosome). 



Acartia longiremis. 



Onccea conifera, one female. 



Idyoea furcata, many young and adult. 



There was a female with ovisac containing eggs in the first nauphus stage. 

 One male measure 0-88 mm. In immature Idyoea jurcata both the apical claws 

 of p 1 Ri 3 were observed to be penicillate ; in the adult only the longer of the 

 two is penicillate. 



Station 466. See under Oithona. 



Station 46A. See under Oithona. Several immature examples. 



Station 50d. See under Harpacticus uniremis. A single female with ovisac; 

 length 1-13 mm. 



I have also found this species very abundant in the stomach contents of 

 the winter flounder at St. Andrews, N.B., associated with Harpacticus uniremis. 



28. Dactylopusia signata, n. sp. 



Station 40 c, d, e. See under Oithona. 



Station 41n. Bernard Harbour, Northwest Territories, depth 0-2 fathoms, 

 August 9, 1915; associated with Harpacticus superflexus, Amphiascus nasutus, 

 and Danielssenia stefanssoni. 



Length of one female 0-8 mm., of another 0-63 mm. None was found 

 with ovisac and no male was observed. Rostrum blunt, conspicuous in side 

 view. Caudal rami very small, shorter than the anal segment, the innermost 



Fig. 50. Dactytopusia signata. 

 Anal segment, caudal ramus and setse. 



but one of the terminal setse on each ramus with a characteristic rounded pro- 

 tuberance.near the base on the inner side. This ental protuberance of the caudal 

 seta is the chief distinctive mark, to which the specific name refers (Fig. 50). 

 69085—31 



