196 



Lice taken from the heads of Eskimos in the Coronation Gulf region 

 were reported by Prof. G. H. F. Nuttall to be typical specimens of 

 Pedrndiis capitis. No difference can be detected between these and 

 other head lice from different parts of the world. Fleas were collected 

 from the continental arctic fox, Alopex lagopus inmiitus, from Parry's 

 ground squirrel, Citellvs parryii, and the Keewatin arctic hare, 

 Lepts arcdais canns ; these were unfortunately lost before identi- 

 fications could be made. 



Dyar (H. G.). Mosquitos collected by the Canadian Arctic Expedition, 

 1913-18 (Diptera, Culicidae). .Re^/. Canad. Arctic Exped. 1913- 

 1918, Ottawa, 14th July 1919, iii, Insects : Part C, Diptera, 

 pp. 31-33 C, 2 figs. [Received 28th October 1919]. 



Collections of mosquitos made during 1913-1916 include 134 

 individuals from the Arctic coast of Alaska and the Canadian North- 

 west Territories. While mosquitos are present in great numbers, they 

 comprise but few species ; those taken include Aedes (Ochlerotatus) 

 nearcticiis, sp. n., both sexes of which are described, some larvae 

 collected with the above that are apparently an undescribed form of 

 Aedes, and a dozen females of an unknown species of Aedes, which 

 await the capture of males or of more perfect specimens before they 

 are named. 



Malloch (J. R.). The Diptera collected by the Canadian Arctic 

 Expedition, 1913-1918 (excluding the Tipulidae and Culicidae). — 

 Rept. Canad. Arctic Exped. 1913-1918, Ottawa, 14th Julv 1919, iii, 

 Insects : Part C, Diptera, pp. 34-90 C, 38 figs. [Received 28th 

 October 1919.] 



In this collection of Diptera are a number of Simuliids, the 

 larvae of which are found only in running w^ater, sometimes in swift 

 streams with rocky beds and sometimes in streams with a 

 moderate current with the bed covered with grass or weeds, to 

 which larvae and pupae are frequently attached. The adults 

 feed generally upon the blood of mammals, but do not often bite man. 

 New species described are Prosimulium borealis, from Victoria Island, 

 and Simvlivm similis, from Hood River, North-west Territories. 



Only three adult Oestrids occur in the collection, these being females 

 of Oedeynagena tarandi, L. Larvae of this species were taken from 

 under the skin of caribou in the Barren Grounds. The other recorded 

 host is the reindeer in northern Europe and Alaska. Larvae of 

 Cephenomyia sp. are also described from the North-west Territories. 



Calliphorid flies include Cynomijia, cadaverina, R.-D., of which 24 

 individuals were taken from various regions in the North-west 

 Territories and Alaska ; Calliphora viridescens, R.-D., which occurs 

 in Europe, is distributed generally throughout North America and 

 has been previously recorded from Alaska ; Phorinia terrae-)iovae, 

 R.-D., of which 38 individuals were taken from different localities in 

 the North-west Territories and Alaska ; and P. caerulea, sp. n., of which 

 both sexes are described from the North-west Territories. A key is 

 given to the species of this genus. 



