THE CANADIAN ENTOMOLOGIST, 47 



11. sp., but is smaller, the wings less dusky, the nervures weaker ; and up- 

 per discal cell of hind wings extends beyond the lower, whereas the lower 

 beyond the upper in P. leucostoma. 



Pontariia megacephala, n. sp. — $. Length, 4 mm. Head wider 

 than thorax ; transversely oval ; inner orbits parallel; clypeus rather deeply 

 and angularly emarginate, lobes broad, rounded ; vertex flat, slightly 

 raised back of ocellar basin shallow, walls rounded ; antennal fovea small, 

 round, but distinctly defined ; antennae a little shorter than body, third, 

 fourth and fifth joints equal; last seven joints with dense, short black 

 hairs. Venation normal, except that the third cubital is rather small, claws 

 minutely but evenly cleft. 



Colour in general, black ; clypeus, labrum, mandibles, except tips 

 which are piceous, cheeks, extreme posterior angles of pronotum, tegulse, 

 apex of coxae, white; small indistinct spot on upper orbits, posterior orbits 

 on one side very narrowly, trochanters, femora, except line above on meso- 

 and meta-, and line below on pro-femora (the line on the meta-femora is 

 broad), tibia?, apex of venter and hypopygium pale reddish-yellow ; tarsi 

 (the anterior tarsi are much the same as the tibi?e) brownish ; palpi brown. 

 Wings hyaline ; nervures brown, costa white at base, stigma pallid at base. 



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

 of Salix brachycarpa. 



This species is related to P. agilis, Cr., but may be. separated by the 

 flatter vertex, broader lobes of the clypeus, claws somewhat deeper cleft 

 and much darker colour. P. agilis in general is yellow-ferruginous. 



Pontania ?fiaura, n. sp. — J . Length, 4 mm. Robust. Head 

 much narrower than thorax, small and almost round when seen from the 

 front ; clypeus nearly truncate ; ocellar basin with wall rounded : antennal 

 fovea small, round, distinctly defined; antenna? as long as head and thorax, 

 fourth and fifth joints equal, third shorter and about equal in length 

 with sixth ; vertex rounded ; head finely and densely punctured ; meso- 

 thorax above finely, but not as densely as head, punctured. Venation 

 normal, claws deeply cleft, rays subequal and somewhat diverging. 



Colour black, except apex of femora, tibiae and tarsi, which are pale 

 testaceous ; tarsi, especially the hind ones, infuscate, hind tibiae somewhat 

 infuscate ; ovipositor luteous. Wings very hyaline ; nervures brown, costa, 

 stigma and all the nervures at base of wing pallid, almost hyaline. 



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

 of SaHx brachycarpa. 



