198 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.38. 



Subfamily NEMATIN.I'',. 

 Genus PTERONUS Jurine. 



PTERONUS ANTENNATUS Marlatt. 



Female, Nerepis, New Brunswick, August 19. 



PTERONUS RUFOCINCTUS (Harrington). 



Female, St. John, New Brunswick, June 14. 



Only the three apical segments are black, and the insect is some- 

 what smaller, but is undoubtedly Harrington's species. 



PTERONUS OCHREATUS, new species. 



Belongs to the group of mendicus, but is distinct in the poorly 

 defined ocellar basin, and characters in the saw. 



F< male. — Length, 5.5 mm. Clypeus broadly, seinicircularly emar- 

 ginate; middle fovea small, nearly circular, and not very distinct; 

 ocellar basin very poorly defined, better defined above; frontal crest 

 broken by a very shallow depression; antenna! fovese large and 

 extending a little above the crest; furrow above anterior ocellus 

 extending Beyond the ocellar line; the interocellar furrow wanting; 

 third and fourth antenna! joints equal; stigma rather narrow, gently 

 rounded, apex sharply rounded; third cubital but little wider at the 

 apex; lower discal cell of hind wings a little shorter than the upper; 

 sheath robust at base, sharply pointed at apex; saw stout at base, 

 tapering to an acute tip, with sharp teeth both above and below. 

 Reddish-yellow; interocellar area, elongate spots on lateral lobes, 

 nietanotum, basal plates and most of tergum black. Wings slightly 

 yellowish hyaline, vitreous; venation brown, cost a and stigma, 

 except base, yellowish. Basal two joints of antennae and the third 

 and fourth joints above brown, the rest of the antenna- the color of 

 the body. 



Type-locality. St. John, New Brunswick. One female collected 

 on July 1 1 by Mr. A. G. Leavitt. 



Type.— Cat. No. 12922, U.S.N.M. 



Genus PONTANIA O.Costa. 



PONTANIA PUMILA, new species. 



Belongs to Group II of Marlatt (Revision of Nematinae of North 

 America) and is related to Li Hcaul'i Marlatt, but is smaller, the ocellar 

 basin is wanting, and there are other differences. 



Female. Length 4 mm. Clypeus broadly, shallowly, seinicircu- 

 larly emarginate; supraclypea! area convex; antenna! foveae angeled 

 above; middle fovea rathe!' shallow, elongate: ocellar basin wanting; 

 inter. .cellar furrow wanting: scutellar appendage dull, finely sculp- 



