10 G Canadian Arctic Expedition, 1913-1 S 
shallow, connecting with the antennal furrows and a broad shallow interocellar 
furrow; postocellar area broad and short; the ocellar areas prominent, sharp 
ridges continuous with a prominent uninterrupted frontal crest, the three 
bounding a deep ocellar basin extending to the median ocellus; antennal plates 
thin and prominent with an interrupted crestal furrow dorsad of them; median 
fovea deep, elongate, punctiform, connecting with a larger round punctiform 
depression in the ventral part of the frontal crest; the supraclypeal area convex; 
the antennae are wanting beyond the second segment; the pronotum finely 
punctate and setaceous; the median and lateral lobes of the mesonotum finely 
granular and sparsely setaceous, the median lobe with a mesal carinate depres- 
sion; the mesoscutum polished; the mesopostscutellum with the mesal portion 
polished and each lateral portion finely roughened; the metascutum roughened; 
the wings more or less infuscated, the stigma and the veins including the costa 
brownish; the claws cleft, the inner ray shorter and stouter than the outer; 
the abdomen densely finely granular, sparsely setaceous; the saw-guides stout, 
the dorsal and ventral margins strongly converging, the distal end bluntly 
pointed; colour black with the tegulae yellowish and the legs beyond and 
including the knees strongly infuscated yellowish. Length, 4 mm. 
Chantry island. Northwest Territories. August 16, 1915. Specimen No. 
132F. The labels of the specimen read as given. Mr. Johansen informs me 
it should be labelled Bernard harbour and not Chantry island. 
This species runs to atriventris Marlatt by Marlatt's table. The prominent 
uninterrupted frontal crest will differentiate it. 
Pontania quadrifasciata, n. sp. 
Female. — Head sparsely coarsely granular, the granules elongated to fine 
ridges in certain parts; the clypeus broadly, shallowly, roundly emarginate, 
the clypeal lobes broad and angular, margin rounded; the antennal furrows 
deep on the ventral and dorsal portions, not interrupting the caudal margin of 
the head, the furrows broad and rounded opposite the median ocellus; the 
ocellar and interocellar furrows forming a distinct Y-shaped depression connected 
with the antennal furrows; the ocellar areas rounded elevations not connected 
with the frontal crest; the frontal crest not interrupted, almost wanting 
except between the antennal fovese where it forms an elevation continuous with 
the subconvex supraclypeal area; the median fovea an elongate punctiform 
depression, twice as long as wide; the ocellar basin distinct, concave, extending 
from the frontal crest to the median ocellus; antennae wanting beyond the second 
segment; the pronotum, the median and lateral lobes of the mesonotum, the 
mesoscutellum, the mesopleura, the mesosternum, and the metapleura polished 
and setaceous; the mesopostscutellum and metascutum polished and not 
setaceous; the wings hyaline, t^he stigma and part of the costa pale, the veins 
brownish; the abdomen polished and sparsely setaceous; the saw-guides broad, 
the dorsal margin straight, the ventral margin convex and curving dorsad to 
the dorsal margin, forming a long oblique distal end, the dorsal part of which 
is bluntly pointed and densely setaceous; the cerci long and t^lender, reaching to 
the end of the saw-guides; colour black with the following parts yellowish: 
the clypeus and labrum, the mandibles, the malar space, extending' for a short 
distance on the inner orbits, the outer orbits, an elongate spot caudad of each 
compound eye, the pronotum broadly, the tegulae, two spots on the cephalic 
part of the mesoscutellum, a spot on each mesaxilla, a large triangular spot on 
the mesopleura, the legs except the proximal part of the coxae and the troch- 
anters in part, the proximal half of the femora and the tarsi more or less infus- 
cated, the ventral aspect of the abdomen and the last tergum; the saw-guides 
dark brownish. Length, 6 mm. 
