298 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



Female. — Essentially as in male. Front at vertex less than one- 

 third of head width, with parallel margins; two pairs of orbital 

 bristles; second antennal segment black, third about two and one- 

 half times its length; cheeks narrow, less than one-fourth the eye 

 height; palpi slender; four dorsocentrals, the second from suture 

 weak; no posterior preintraalar bristle; middle tibia with three an- 

 terior dorsal bristles, the uppermost one shortest; hind tarsi slender; 

 fourth abdominal segment black, thin gray pollinose, the posterior 

 border fringed with moderately long bristles. Length 12 nmi. 



Material examined. — In the United States National Museum col- 

 lection there are four paratypes, including both sexes, from Ontario, 

 Quebec, and Alberta, Canada. There are also six males and one 

 female from New Brunswick, Canada, and from the following States : 

 New Jersey, Wisconsin, South Dakota, and Colorado. Also there 

 are three specimens in the David G. Hall collection from Ohio, 

 Kansas, and New Mexico. 



The material representative of this species in the Melrose High- 

 lands laboratory collection consists of 10 specimens collected at 

 Lunenburg, Mass., from May 21 to June 29, 1914; 3 specimens col- 

 lected at Melrose, Mass., June 1917, May 7, 1930, and May 26, 1934: 

 4 specimens bearing "G. M. L." numbers 9427di, 9427a\ 9427a-, and 

 9427b^, which were bred from Porthetria dispar, collected in Massa- 

 chusetts, July 1925. These flies emerged in Jmie 1926 and were used 

 in a successful reproduction experiment by T. H. Jones. No. 9427d^ is 

 the progeny of Nos. 9427a^ ( $ ) and 9427b^ ( 9 ) . There are also 

 two other specimens from Morris County, N. J., collected May 19, 

 1936. Specimens of this material were submitted to Mr. Shewell 

 for comparison with the type of varlata, and according to him the 

 anal forceps agree with those of variata in general outline, though 

 they are smaller and more densely pilose behind. 



Hosts. — Nephelodes emmedonia Cramer (W. A. Squires, Sackville, 

 New Brunswick, Canada, June 2, 1929) ; Porthetria dispar Linnaeus 

 (as preceding). 



TACHINOMYIA CANA, new species 



This species resembles variata but differs in having broader para- 

 facialia, a brownish second antennal segment, and slenderer anal 

 forceps. 



Male. — Hind tibiae inwardly with short villosity, the villi scarcely 

 the tibial width in length ; lobes of fifth sternite orange-red, smooth 

 at base and inconspicuously ridged on their inner edges ; fourth stern- 

 ite convexly produced; fouilli abdominal segment mostly chalky 

 white, with narrow apical border of orange-red : dorsum of scutellum 

 broadly reddish at apex; first and second genital segments orange- 



