NO. 1930. DESCRIPTIO^'H OF NEW SAWFLIE8—R0HWER. 241 



EUURA NIGRELLA, new species. 



Runs in the table to the species of this genus to Euura orbitalis 

 Norton, but may easily be separated from that species by the color. 

 Superficially, nigrella is like serissimse, but the head and sheath are 

 quite different. 



Female. — Length, 3 mm. Clypeus rather deeply, arcuately emar- 

 ginate, lobes broad, obtusely rounded; supraclypeal fovese confluent 

 with the rather large antennal fovese; supraclypeal area nearly 

 rectangular in outline (somewhat broader below), strongly convex; 

 middle fovea deep, elongate, not breaking through the crest; ailtennal 

 furrows complete from crest to near lateral ocelli ; ocellar basin indis- 

 tinct, bounded by low, rounded walls; postocellar area bounded 

 laterally by the punctiform ends of the antennal fuiTows; postocellar 

 furrow wanting; postocellar line much longer than the ocellocular 

 line; third and fourth antennal joints subequal; venation normal; 

 stigma rounded below; teeth of claws subequal in length; cerci long, 

 not tapering; sheath nearly parallel sided, apex obliquely truncate. 

 Black; clypeus, labrum, mandibles (apices piceous), supraclypeal 

 area, tegulse, legs below coxse (except the infuscate apices of hind 

 tibiae and all of their tarsi) testaceous. Wings hyaline; venation 

 brown, stigma paler. 



Fort Erie, Ontario, Canada. One female from M. C. Van Duzee, 

 collected April 7, 1910. 



Type.— C&t. No. 14574, U.S.N.M. 



Genus PONTANIA Costa. 



PONTANIA CRAS&ICORNIS, new species. 



Related to Pontania robusta Marlatt, but is less robust, the emargi- 

 nation of the clypeus is deeper and the frontal crest is stronger. 



Male. — Length, 3.5 mm. Clypeus deeply, narrowdy emarginate, 

 the emargination about the same size as the lobes, which are broadly 

 rounded : supraclypeal fovese punctiform, confluent with the antennal 

 fovese; supraclypeal area rectangular in outline, narrow, strongly 

 convex; antennal fovese ver}'" large ; frontal crest very strong; middle 

 fovea elongate, well defined, but not deep; antennal furrows obsolete; 

 ocellar basin represented by a depression in front of the anterior 

 oceUus; postocellar area convex, slightly impressed in the middle; 

 postocellar line longer than the ocellocular line; antennse robust, the 

 third joint slightly shorter than the fourth; stigma gently rounded 

 below, oblique apically; venation normal, except the lower discal 

 cell of the hind wings is much longer than the upper; inner tooth of 

 claw shorter than the outer; procidentia much broader than long, 

 I rounded apically; hypopygidium long, tapering to a narrow point 

 i apically. Black; antennse beneath, head below antennse, orbits, 

 48702°— Prof.N.M.vol.43— 12 16 





