58 c Canadian Arctic Expedition, 1913-18 
Frons bristled as in rohusta; cheek with four well-differentiated bristles, 
two of which are much stronger than the others, the normal hairs strong; third 
antennal joint very little shorter than second ; arista short, thickened to distinct- 
ly beyond middle; profile as in PL VIII, fig. 21. Dorso-centrals irregular in type, 
three strong ones on one side and three strong and one weak one on the other; 
three sternoplurals. Abdominal segments two to four with discal macrochaetse. 
Wings as in rohusta. Fore tarsi dilated. 
Length, 9- 75mm. 
Type Locality: Cockburn point, Northwest Territories, Canadian Arctic 
coast, September 5, 1914 (F. Johansen). 
The only species I find record of from the arctics is aenea Staeger, described 
from Greenland. This species has the abdomen entirely black and is apparently 
distinct from arctica. 
CALLIPHORID^. 
This family contains a number of genera the larvae of which feed normally in 
carrion. The flies are popularly known as flesh-flies, bluebottles, and blow-llies. 
Originally the genera now included here formed part of the family Muscidse 
but within recent years the latter has been divided, several families now contain- 
ing genera that at one time formed part of the Muscidse. It is at present, accord- 
ing to some entomologists, a debatable point whether our concept of the Muscidse 
should not be revised to the extent of applying the name to what is now called 
Anthomyiidse and dropping the last name entirely. With this view I do not 
agree, but the present paper is not the proper place to discuss the question, more 
especially as there are no true Muscidse in the collection. 
Cynomyia Robineau-Desvoidy. 
There is but one species of this genus in the collection. 
Cynomyia cadaverina Robineau-DesvoidJ^ 
Cynomyia cadaverina Robineau-Desvoidy. Essai sur les Myodaires, p. 365, 1830. 
Twenty-four specimens with data as follows: thirteen specimens, Bernard 
harbour. Dolphin and Union strait. Northwest Territories, May, June and July, 
1915 and 1916 (F. Johansen) ; six specimens, Barter island, Arctic coast of Alaska 
June, 20 and 23, and July 2, 1914, and June 15, 1914 (D. Jenness) three speci- 
mens, west of Kongenevik, Camden bay, Alaska, June 4, 1914 and two speci- 
mens, Nome, Alaska, August 24, 25, 1916 (F. Johansen). 
Calliphora Robineau-Desvoidy. 
There is one species in the collection, represented by three specimens. 
Calliphora viridescens Robineau-Desvoidy. 
Calliphora viridescens Robineau-Desvoidy. Essai siu* les Myodaires, p. 537, 1830. 
This species occurs in Europe and North America. Like the preceding 
species it is generally distributed throughout North America, and has been pre- 
viously recorded from Alaska. 
Dsi-ta on specimens: Nome, Alaska, June 21, 1916 (F, Johansen). 
Phormia Robineau-Desvoidy. 
There are two species in the collection, one of which, terrce-novoi, occurs 
generally throughout North America, and has been reported from Greenland and 
Alaska. 
