48 THE CANADIAN ENTOMOLOGIST 



This species is related to P. atra, Marl., but may be separated from it 

 by the light nervures of the wings, dark trochanters, claws deeply notched, 

 etc. It is also more robust. It is also related to P. u?iga, Kincaid, but 

 may be separated by the nearly truncate clypeus, the tarsal claws being 

 subequal and diverging, smaller size, light stigma and costa, and veins being 

 paler, etc. 



Pontaiiia melanosovia, n. sp. — J . Length, 3^ mm. Robust; clypeus 

 circularly emarginate, lobes broadly rounded, antennal fovea distinct, 

 circular ; ocellar basin indistinctly defined ; ocellar regions raised ; from 

 lower ocellus running to top of each eye is a broad, shallow furrow ; 

 antennae extending to base of abdomen, third and fifth joints equal, fourth 

 a little longer, head and mesosternum finely and rather densely punctured. 

 Third cubital ceil subquadrate, slightly wider at apex than at base ; upper 

 discal cell of hind wings slightly exceeding lower. Claws deeply notched, 

 rays subequal. Sheath broad, slightly emarginate beneath, acuminate at 

 tip ; cerci robust, tapering. 



Colour mostly black ; clypeus, labrum, mandibles, spot between an- 

 tennae, antennjfi beneath, except scape, dark brown ; a triangular spot on 

 upper orbit fulvous ; posterior angles of pronotum, tegulje, legs, except 

 bases of coxse and tip of posterior tibiae and their tarsi, which are infus- 

 cate, reddish-yellow. Wings dusky hyaline, nervures brown, base of stigma 

 and all the nervures as they near the base of wing, white. Clypeus with a 

 few long white hairs. 



Habitat. — Fort Collins, Colo., May 13, 1899. Type in the collection 

 of Colorado Agricultural College. 



In Marlatt's Revision of the Nematinse of N. Am., this species runs 

 to P. nigrita^ Marl, but is easily known from that species by the circular 

 antennal fovea and the black posterior orbits. 



Pteromcs hypojnelas, n. sp. — $ . Length, 5 mm. Clypeus broadly, 

 shallowly, circularly emarginate, lobes small ; antennal fovea not distinctly 

 defined ; ocellar basin with walls rounded ; between the ocellar basin and 

 the eye is a rather large impression ; frontal crest broken in the middle ; 

 antennae reaching to about the third abdominal segment, third, fourth and 

 fifth joints subequal ; head with rather sparse, small punctures ; pleura 

 sericeous, claws deeply notched, inner ray somewhat shorter than outer. 

 Third cubital cell twice or nearly twice as wide at apex as at base, two 

 and a half or three times as long as width at base ; outer veins of discal 

 cell of hind wings meeting or upper cell slightly extending beyond lower, 

 lower discal one and a half times as wide as upper ; stigma regularly 

 tapering from near base to apex. 



