THE TENTHREDINOIDEA 355 



oped ; frontal ridge strongly raised, broadly broken in the middle ; an- 

 tennal fovea large, oval, deeply incised ; antennas longer than head and 

 thorax, slender, joints three to five subequal ; sheath acutely pointed, 

 narrow, tapering regularly above and below ; claws deeply cleft, rays 

 slender, subequal, parallel ; venation normal ; stigma broad regularly 

 rounded beneath. Color black; labrum, clypeus, spot below an- 

 tennae, inner and outer orbits narrowly, angles of prothorax, tegulae, 

 greater part of venter except sheath and legs, yellowish ; bases of 

 coxaj black and the femora and tibia; irregularly inf uscated ; wings 

 hyaline, nervures light brown, base of costa and disk of stigma pallid. 



One female, Kukak Bay, July 4. 



Type no. 5301, U. S. National Museum. 



Allied to Pontania gracilis Marlatt, but in that species the ab- 

 domen is very broad centrally and the sheath is rounded at the tip 

 instead of acutely pointed. 



PONTANIA ISLANDICA sp. nov. 



Female: Length 5 to 6 mm. ; moderately robust, shining; clypeus 

 deeply and narrowly notched, lobes rounded; walls about ocellar 

 basin distinctly raised; frontal crest sti:ongly raised, deeply notched in 

 the middle ; fovea oval, rather deep ; antennae as long as head and 

 thorax, third joint shorter than fourth ; venation normal ; stigma large, 

 evenly rounded below ; claws stout, strongly and evenly cleft ; sheath 

 rather stout, gently tapering above and below to a rounded apex; cerci 

 long, stout. Color black; labrum, clypeus, narrow inner orbits, 

 broader outer orbits, margin of pronotum, tegulie, apex of abdomen, 

 including the sheath and the legs, yellowish ; coxie black at base and 

 all the legs more or less inf uscated ; wings hyaline, nervures and 

 stigma pale brown. 



Four females, Popof Island, July 9-15. 



Type no. 5299, U. S. National Museum. 



Allied to Pontania californica Marlatt, but in that species the an- 

 tennae are much shorter and the walls of the ocellar basin are not well 

 defined. 



PONTANIA GLINKA sp. nov. 



Female: Length 5.5 mm. ; robust, shining; clypeus very shallowly 

 emarginate ; lateral walls of ocellar basin distinctly raised; frontal 

 crest strong, unbroken ; antennal fovea circular, rather deeply incised ; 

 antennas as long as head and thorax, slender, third joint shorter than 

 fourth ; venation normal ; claws deeply cleft, rays equal ; sheath stout, 

 tapering above and below to a narrowly rounded apex ; stigma with 



