398 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 41. 



reference, are typical specimens of amicus (Norton), agreeing exayctl 

 with the type. Doctor Dyar writes that, "The larvge of these two 

 species [dubitatus and amicus] of Taxonus can not be certainly dis- 

 tinguished," The adults offer only varietal differences, if that. 

 Norton, in the original description, suggested that amicus would only 

 be a variety of dubitatus. 



HEMITAXONUS ALBIDOPICTUS (Norton). 



Taxonus albidopidus Norton, Trans. Amer. Ent. Soc, vol. 2, 1868, p. 213, No. 6. 

 Eemitaxonus rufopedus JioK-WER, Proc. U. S. Nat. Mus., vol. 38, No. 1738, 1910, 

 p. 204. 



There can be no doubt about this synonymy. 



Genus SCOLIONEURA Konow. 



SCOLIONEURA LUTEOPICTA, new species. 



May be separated from S. populi Marlatt by the following com- 

 parison: 



Scolioneura populi Marlatt. 



FEMALE. 



1. Middle fovea somewhat pryiform, 



broader below. 



2. Antennal furrows without a distinct 



punctiform fovea below the level of 

 ocelli. 



3. Ocellar basin rather well defined. 



4. Postocellar area not parted. 



5. Apical antennal joint rounded at the 



apex, subequal with the preceding. 



6. Antennal furrows black. 



MALE. 



7. Pectus black. 



Scolioneura luteopicta Rohwer. 



FEMALE. 



1. Middle fovea smaller, rectangular in 



outline. 



2. Antennal furrows with a distinct punc- 



tiform fovea below the level of 

 ocelli. 



3. Ocellar basin hardly defined. 



4. Postocellar area parted by a faint me- 



dian furrow. 



5. Apical antennal joint tapering and dis- 



tinctly longer than preceding. 



6. Antennal furrows pale, except the 



punctiform fovea. 



7. Pectus pale. 



Brookings, South Dakota. Two males and one female bred from 

 Cottonwood (Populus) June 20, 1892. 

 Type.— C^t. No. 14011, U.S.N.M. 



Genus EMPRIA Lepeletier. 



EMPRIA SCHWARZI, new species. 



Related to Empria 7naculata (Norton), but may be known from 

 that species by the black clypeus, darker venation, depressed area in 

 the top of inner orbits, and more shining dorsulum. The black 

 clypeus, dark venation, annulated posterior legs, and robust truncate 

 sheath are characters to help distinguish this species. 



