5A 
and posterior tarsi brownish black; wings with dusky band extending 
transversely below the stigma; stigma and veins dark brown. 
Male.—Length 6 mm.; rather slender; characters of head and antenne 
as in female; procidentia short, narrow, slightly constricted basally, 
truncate at apex; venation as in female. Color black; border of pro- 
notum and tegule yellowish; legs as in female; basal half of venter 
of abdomen beneath reddish, strongly infuscated; dusky band on 
wings somewhat lighter than in female. 
One female and one male received from Mr, Harrington, who reports 
that this species has been somewhat abundant on willows on the 
experimental farm at Ottawa, Canada. He was at first of the opinion 
that it might prove to have been introduced from Kurope, but it seems 
to be distinct from any European species and also to be new to our 
fauna. I take pleasure, therefore, in dedicating it to Mr. Harrington. 
A male specimen has since been submitted to me for identification by 
Rey. Thomas W. I yles, of South Quebec, Canada. (Coll. U.S, Nat, Mus.) 
12. Pteronus fylesi new species. 
1891. Nematus pallidiventris Fallen. Fyles, Can. Ent., Xxull, p. 135. 
Female.—Length 7 mm.; robust, shining; clypeus circularly emargi- 
nate, lobes rounded; walls about ocellar basin well developed; frontal 
crest unbroken; fovea oval; antenne slender, tapering, longer than head 
and thorax, third and fourth joints nearly equal; venation normal; 
stigma broad, regularly tapering toward apex; sheath broad, tapering, 
slightly produced, and with a rather dense tuft of short hairs at extreme 
tip; cerci short; claws deeply and evenly cleft. Color black; triangle 
beneath bases of antenne, clypeus for the most part, labrum and other 
mouth parts, pronotum, tegulie, abdomen except broad dorsal stripe, 
and legs for the most part reddish yellow; sheath, cerci, extreme tips 
of posterior tibize, and the posterior tarsi dark brown; anterior tarsi 
slightly infuscated; extreme bases of coxze brown. 
Male.—Length 6 mm.; slender; structural characters in general as 
in female; antennz somewhat stouter, slightly compressed; procidentia 
short, narrow, truncate at apex. Color as in female, except that the 
dorsum of abdomen is entirely black and the venter is slightly infus. 
cated, especially toward apex. 
Two females and one male received from Rev. Thomas W. Fyles, of 
South Quebec, Canada. The species was described by Mr. Fyles in 
the Canadian Entomologist, as noted above, the identification having 
been made for him by the Abbé Provancher. I have compared the 
species with specimens of pallidiventris Fallen, and there is a merely 
superficial color resemblance; pallidiventris belongs to the genus Pris- 
tiphora, and is a totally distinct insect. This species seems to be 
distinct from any European species, and while allied somewhat closely 
