8 G Canadian Arctic Expedition, 1913-18 



Pontania lorata, n. sp. 



FEMALE. Head with the dorsal portion finely granular and. the ventral 

 portion polished; the clypeus short, broadly roundly emarginate, the clypeal 

 lobes distinct, broadly rounded; the supraclypeal area strongly convex, the 

 crestal furrow wanting; the frontal crest swollen, continuous with the frontal 

 area: median fovea a deep oval pit continuous on the dorsal side with a short 

 shallow linear impression interrupting the ventral portion of the frontal crest; 

 the antennal furrows distinct, broad and bounding a strongly elevated frontal 

 area with a slightly concave ocellar basin; the frontal ridges wanting; the 

 vertical furrows punctiform; the ocellar and interocellar furrows wanting; 

 antennae wanting beyond the sixth segment, the third and fourth and fifth 

 segments subequal in length; the collar granular and setaceous; the median 

 and lateral lobes of the mesonotum, the mesoscutellum, the mesopostscutellum, 

 and the metascutum polished and setaceous; the mesopleura, mesosternum, 

 and metnpleura polished, the former sparsely setaceous; wings hyaline, veins 

 brownish, the stigma pale, the free part of R 5 and M 2 interstitial in one wing 

 and not in the other; claws unevenly cleft, the outer ray long and slender, the 

 inner short and not over one-third the length of the outer; the abdomen finely 

 granular and sparsely setaceous; the saw-guides broad and bluntly rounded 

 on the ventral margin 'and distal end, not tapering, the dorsal margin convex, 

 the distal portion with a distinct scopa; the cerci long and setaceous, reaching 

 beyond the middle of the saw-guides; colour black, the legs beyond the femora 

 whitish, the distal segments of the mesotarsi and metatarsi infuscated. Length, 

 4 . f) mm. 



MALE. The male differs from the female in having the frontal crest 

 completely interrupted, the ocellar and interocellar furrows faintly indicated, 

 the antenna longer and more slender but with segments three and four subequal; 

 the procidentia short, broad, and bluntly rounded. Length, 4 mm. 



Herschel island, Yukon Territory. Larvae collected in galls of creeping 

 willow Salix arctica. August 13, 1914. Imagines emerged July, 1915. 

 F. Johansen, collector. Female No. 265; males Nos. 255, 258, 260. 



The smaller size and the lack of a crestal furrow readily separates this 

 species from atrata to which it is quite similar in general appearance. The 

 specimens described under this name were received as a part of Breeding Record 

 No. 35. The difference in head structures and the shape of the saw-guides 

 makes their inclusion with the preceding species impossible. 



Pontania delicatula, n. sp. 



MALE. Head with the posterior orbits and postocellar area finely granular, 

 the inner orbits polished for the most part, and the frontal area slightly rough- 

 ened; the clypeus narrowly, shallowly, semicircularly emarginate, the clypeal 

 lobes broad and truncate; the labrum tran verse and truncate; antennal furrows 

 deep between the pretentorinse and the frontal crest, broad and shallow and 

 almost wanting on the cephalic aspect, terminating in a punctiform depression 

 caudad of the lateral ocelli; the ocellar furrow wanting and the interocellar 

 fin-row a short linear depression; the postocellar area short and broad, not 

 elevated; the ocellar area only slightly elevated, continuous with the frontal 

 crest, the frontal crest strongly convex and interrupted on the meson by a deep 

 furrow continuous with a deep concave ocellar basin which extends to the 

 median ocellus; the median fovea a distinct punctiform depression, distinctly 

 separated from the furrow interrupting the frontal crest; the supraclypeal area 

 strongly convex and roughened; the antennae short, segments three and four 

 subequal, the segments roughened and densely finely setaceous; the pronotum 

 roughened like the head; the median and lateral lobes of the mesonotum finely 



