236 THE CANADIAN ENTOMOLOGIST 



orbital markings more brownish than others, antennae for most part, collar, 

 tegulae, mesopleurse for most part, mesosternum, sides of mesoscutellum, legs 

 except distal portion of metatibife and metatarsi, venter of abdomen entirely, 

 caudal margin of abdominal terga, becoming successively broader on caudal 

 terga, caudal tergum entirely, and saw-guides except tips; clypeus narrowly 

 roundly, emarginate; median fovese broad, round depression with sloping sides; 

 frontal crest narrow, distinct, unbroken, dorsal margin two-sided; ocellar basin 

 distinct, flat, lateral walls narrow, sharp, and distinct; postocellar area not 

 depressed below ocellar basin; head and thorax setaceous; mesopostscutellum 

 setaceous, not roughened ; wings hyaline with numerous spinulae, veins and stigma 

 and costa yellowish; saw-guides with dorsal margin straight, ventral margin 

 straight, distal portion oblique, convex, bluntly pointed above. Length 5.5 mm. 



Habitat. — Orono, Maine. Maine Agricultural Experiment Station, Sub. 71. 



This species runs to kincaidi Marl. Its coloration is distinctive. 



Pteronidea enavata, n. sp. — Female. Body rufous with the following 

 parts black: small, transverse area surrounding ocelli, small spot on caudal margin 

 of postocellar area, antenna\ mesal area of median lobe of mesonotum, meso- 

 postscutellum in great part, metascutellum, ring on metatibiae, and cephalic 

 band, narrower on caudal segments, on abdominal terga; following parts whitish : 

 labrum, pronotum, tegulae, and legs in great part, except tarsi; clypeus broadly 

 emarginate, almost truncate; median fovea pit-like, deep; frontal crest broken 

 by oblong depression bearing median fovea, two-sides, angular; ocellar basin 

 flat, roughened, limiting lateral walls narrow, not strongly raised; antennae 

 with third and fourth segments subequal, fifth shorter; head and thorax dull, 

 setaceous; wings yellowish, veins and costa and stigma pale, spinulae not promi- 

 nent; saw-guides with dorsal margin straight, ventral margin convex, distal 

 portion oblique, pointed at distal end above. Length 6 mm. 



Habitat. — Orono, Maine. Maine Agricultural Experiment Station, Sub. 25. 



This species resembles pingnidorsiini Dyar, but they are easily separated 

 by the difference in the form of the head ridges. 



Pristiphora ostiaria, n. sp. — Female. Body black with the following 

 parts white: labrum, mandible, mouth-parts, collar broadly, tegulae, and legs 

 except a spot on proximal end of metacoxae, distal one-fourth of metafemora, 

 distal one-third of metatibiae, and metatarsi; antennae with third segment longer 

 than fourth, fourth and fifth subequal; clypeus truncate; median fovea an 

 inconspicuous depression; frontal crest wanting; ocellar basin distinguishable, 

 lateral walls not conspicuous; head uniformly finely punctured; occipital, ocellar, 

 and interocellar furrows wanting; mesonotum including mesoscutellum and meso- 

 postscutellum, polished; mesopleurae with white setae; wings hyaline, veins and 

 stigma brownish, costa pale, spinulae numerous; saw-guides narrow with dorsal 

 margin straight, ventral margin convex, distal end oblique and blunt. Length 

 6 mm. 



Male. — The male differs in having supraclypeal area, genal orbits, clypeus, 

 and venter of abdomen pale; median fovea is larger and more conspicuous; 

 procidentia is comparatively broad, flat, rounded. Length 5 mm. 



//aftito/.— Ithaca, New York. H. Yuasa. No. 212-1-1. 



This species is near bank si Marl., but they can be separated by the dif- 

 ference in coloration. 



