46 THE CANADIAN ENTOMOLOGIST. 



except a broad line above and below, meta-tibise except at apex, venter 

 near apex, and edges of the hypopygium ferrugino-testaceous ; meso-tarsi 

 and palpi brown ; hind tarsi black. Wings dusky hyaline ; costa, except 

 at base which is white, and stigma yellow-brown ; rest of the nervures 

 brown. 



Habitat. — Boulder, Colo., May 22, 1907 (S. A. Rohwer), on foliage of 

 Poptdus angustifolia. 



In Marlatt's Revision of the Nematinae (Tech. Ser. No. 3, U. S. Dept. 

 Ag.) this species runs to P. pisum, Walsh, but it is not that, and may be 

 separated from it by the short fifth antennal joint, different shape of the 

 clypeus, not having the third cubital quadrate, the black antennae, black 

 line on femora above, yellowish-brown stigma, etc. It also seems to be 

 related to P. glinka, Kincaid, but may be separated from that species by 

 the unequal tarsal claws, the lower margin of the stigma being rounded, etc. 



Pofitania brachycarpce^ n. sp. — $ . Length, 4}^ mm. Head almost as 

 wide as thorax ; seen from above broadly rectangular; clypeus angularly 

 emarginate, lobes triangular, ocellar basin shallow, the walls broad and 

 rounded ; ocellar basin with small, dense punctures ; antennal fovea dis- 

 tinct ; antennae stout, extending about to basal plates, fourth and fifth 

 joints equal, third longer ; frontal crest slightly emarginate. Third cubital 

 cell sub-quadrate ; upper discal cell of hind wings slightly exceeding the 

 lower j claws deeply notched, the inner ray shorter and somewhat stouter ; 

 sheath with long brownish hairs. Colour in general black; clypeus, labrum, 

 mandibles, except tips which are piceous, cheeks, face, somewhat between 

 the antennae, upper and posterior orbits broadly, inner orbits narrowly, 

 extreme angle of pronotum, tegulse, coxse except base, trochanters, Temora, 

 tibiae and tarsi^ extreme tip of last dorsal segment, last ventral segment 

 slightly, pale reddish yellow, coxse and trochanters inclined to pallid; palpi 

 brown ; tarsi (especially the posterior ones) and apex of posterior tibiae 

 infuscate. Wings hyaline ; nervures dark brown, costa white at base. 



Habitat. — Florissant, Colo., June 16, 1907 (S. A. Rohwer) on foliage 

 of Salix brachycarpa. 



This species is closely related to P. pisiim^ Walsh, but may be sepa- 

 rated by the following characters: Head not so wide as thorax, upper discal 

 cell slightly exceeding the lower, claws with inner ray shorter and stouter ; 

 pronotum mostly black. It is also somewhat related to P. consors, Marl. 

 (Can. Ent., Dec, 1898), and may be known from it by the subquadrate 

 third cubital, black sheath and venter and the apical half of the abdomen 

 being black. It also has much general resemblance to P, leucostoma, 



