400 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 41. 



ing here have usually been placed in EmpTiytus Khig. Includes the 

 following species: [Nearctic] canadensis (Kirby), iTwrnatus (Say), 

 aperta (Norton) angustus (Kincaid), puchella Rohwer, virginica 

 Rohwer, pallidiscajM Rohwer, plesia Rohwer, strameneipes (Cresson) ; 

 [Palsearctic] grossularix (Klug), tener (Fallen), carpini (Hartig), 

 perla (Klug). More of the Palsearctic species may belong here, but 

 these are all that at present can be placed with any certainty. 



Key to Nearctic species. 



Abdomen black, not marked with pale; clypeus black or mostly 1 



Abdomen strongly marked with pale ; clypeus white 2 



1. Angles of pronotum pale; a pale spot above intermediate coxse; stigma narrow 



elongate, hardly rounded below inornatus (Say). 



A.ngles of pronotum black; pleurae all black; stigma shorter, robust, rounded 

 below canadensis (Kirby). 



2. Pectus and lower part of pleurae pale 3 



Pectus black 6 



3. Middle fovea large, subcircular, rather deep pulchella Rohwer. 



Middle fovea wanting or at most indicated 4 



4. Scape pale; postocellar line present pallidscapa Rohwer. 



Scapa black ; postocellar line wanting 5 



5. Lobes of the clypeus obtuse siramineipes (Cresson). 



Lobes of the clypeus acute virginica Rohwer. 



6. Scape pale; clypeus slightly emarginate angustus (Kincaid). 



Scape black; clypeus deeplv emarginate i aperta (Norton). 



[ plesia Rohwer. 

 EMPHYTINA PULCHELLA, new species. 



Female. — ^Length, 6.5 mm. Clypeus arcuately emarginate, lobes 

 obtuse; supraclypeal area convex; supraclypeal foveas and antennal 

 foveas confluent, large; middle fovea sharply defined, circular in out- 

 line; ocellar region 

 raised; ocellar basin 

 wanting; antennal fur- 

 rows wanting; postocel- 

 lar furrow wanting ; pos- 

 tocellar area defined lat- 

 FiG. 4.— Apex of the sheath of ametastegia (Emphytina) erally by punctiform 



PUCHELLA Rohwer. Figure to the left of the type to the c „ j. n t 



right OF the paratype. toveae; postocellar Ime 



shorter than either the 

 ocelloccipital or ocellocular; third antennal joint distinctly longer 

 than the fourth, antennae pilose; stigma rounded on the lower 

 margin; sheath as in figure 4. Black; clypeus, labrum, posterior 

 margin of the pronotum, tegulae, lower part of the mesoepisternum, 

 mesosternum ; legs entirely and venter white ; middle of dorsal seg- 

 ment rufoferruginous (narrowing laterally). Wings hyaline, irides- 

 cent; venation dark brown, base of stigma palUd. 



Germantown, Pennsylvania, One female collected May 2, 1910. 

 Chicopee, Massachusetts, one female May 17, 1897. 



Tt/pe.— Cat. No. 13977, U.S.N.M. 



