24 K Canadian Arctic Expedition, 1913-18 



The fifth legs (Fig. 28) are two-jointed, the second joint carrying three 

 setse at the end, a slender one in the middle, a stout vaned (bilimbate) se and a 

 similar but smaller si; the proximal joint carries a simple se, like the apical seta. 



Fig. 28. Cyclopina schneideri. 

 Fifth leg of female. 



The male, from station 41fif, was nearly 0-74 mm. long. Anterior antennae 

 iwo-thirds the length of the forebody, with 16 joints; joints 4 to 9 inclusive are 

 telescoped, 10 to 14 inclusive form the intumescence; the 10th joint carries two 

 spiniform processes applied to the anterior face of the 11th; the remaining 

 segments of the enlarged part with pectiniform setse. 



21. Oncaea conifera Giesbrecht, 1891. 



For reference see Nordisehes Plankton, Bd. IV, Lief. VIII, Copepoden by Dr. van Breemen, 

 p. 188-9, Kiel und Leipzig, 1908. 



Station 30a. See Table VIII. 



Station 42y. Table X. 



Station 42z. See under Pseudocalanus. A single female preserved from this 

 station measured 0-65 mm. in length. 



Station 466. See under Oithona. This is an Arctic species with an exceed- 

 ingly wide southerly range even reaching to the Antarctic ocean. Or it might 

 perhaps be described as a Mediterranean species, ranging north, south, east and 

 west from its centre of distribution. It cannot be stated positively whether 



it is an Arctic emigrant to the south or a Mediterranean migrant to the north. 

 The evidence from the present collection bearing upon this point is not very 

 cogent, but, so far as it goes, it points to the north as the home of this species. 

 What is true of the distribution of Oncaea conifera appUes also to Oithona similis, 

 except that the latter, like Acartia longiremis, penetrates into the Baltic, from 

 which sea Oncaea conifera appears to be excluded. 



C. Harpacticoida. 



22. Ectinosoma neglectum Sars, 1904. 



G. O. Sars: Crustacea of Norway. Copepoda-Harpacticoida, Bergen, 1904, p. 31. 



Station 40(i. See Table XIV. 



Station 40e. See under Oithona. 



Station 40r. See under Acartia longiremis. 



An immature female from station 40?' was 1-07 mm. long; the distal 

 joints of the fifth legs were not separated from the rest of the lamelliform ap- 

 pendage, but the marginal setse were present and elongated. The inner and 



