SUBFAMILY CHRYSOMYINAE Lh 
as a new name for the species because of the preoccupation and 
selected it as the genotype of their new genus Boreéllus. Their 
specimens were Malloch’s paratypes. Townsend (1926) pro- 
posed the name Mallochomyia johansent for the same purpose. 
Townsend (1931, p. 71) gave the correct binomial after seeing 
the type of atriceps. | 
Collin (1925) distinguished between this species and Phormi 
groenlandica (Zetterstedt) and stated that the two were un- 
doubtedly congeneric. The latter is a synonym of Protophormia 
terrae-novae (R.-D.). Villeneuve (1930, p. 42) indicated that 
the deseription given by Rohdendorf (1924) for Phormia 
boganidae Erichson exactly matches that for Phormia atriceps 
(Zetterstedt) and assumed that the species was synonymous with 
Phormia terrae-novae. 
Biology, habits, and immature stages. Collin (1925) reports 
upon specimens reared from a dead fox in Greenland. It is 
saprophagous like Phorm regina (Mg.) and Protophormia 
terrae-novae (R.-D.). Larvae were collected from a walrus head 
during July at Dundas Harbor, Devon Island, Baffin Land, by 
A. J. Duval and C. O. Handley, U. 8S. Department of Interior. 
Pupae and adults from these, as well as larvae, were forwarded 
to the Bureau of Entomology and Plant Quarantine for identifi- 
eation too late for larval descriptions to be included in this work. 
~ PROTOPHORMIA TOWNSEND 
Protophormia Townsend, Smithsn. Mise. Collect. 51(18038) :123, 
1908; Shannon, Wash. Ent. Soc. Proc. 28(6) :119, 1926; 
Townsend, Manual of Myiology, vol. 5, p. 166, 1937. Geno- 
type. Phorma terrae-novae Robineau-Desvoidy. (Mono- 
basic. ) 
Male and female. Head (pl. 4, A and B) with length at 
vibrissa greater than at antenna; parafaciale narrowed and with 
minute scattered hairs above; faciale bristled for about three- 
fourths the distance toward antennal base; palpus long, clavate; 
third antennal segment about twice length of second; arista with 
long plumosity above and shorter plumosity below, for about 
two-thirds its length; back of head evenly rounded. 
Thorax with disc of mesonotum conspicuously flattened; 
humeral bristles four; preintraalar bristles two or three; pre- 
- aerostichal bristles absent or vestigial; predorsocentral bristles 
two, sometimes a weak third anterior to normal row; notopleural 
bristles two, sometimes a weak third between them; prosternum 
setose; preparapteron and greater ampulla with fine short de- 
