406 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



black oak. It is impossible to determine if these are all finguis as 

 here restricted. The male is not in the collection of the United States 

 National Museum. 



DIMORPHOPTERYX PINGUIS ERRANS, new variety. 

 Parasiobla rufocinctus Howard, Insect Book, 1904, pi. 14, fig. 26. 



Besides the characters given in the above table this variety may be 

 separated by the anterior margin of the clypeus being pale. 



Two females and two males from the collection of Dr. H. G. 

 Dyar. One of the females from Bellport, New York, June 12. 



Type.— Cat. No. 13843, U.S.N.M. 



DIMORPHOPTERYX PINGUIS VIRGINICA, new variety. 



Female. — Falls Church, Virginia, June 28; female, Washington, 

 District of Columbia, June 22; male, Glencarlyn, Virginia, June 28. 

 All collected by N. Banks. 



Type.— Cut. No. 13842, U. S.N.M. 



DIMORPHOPTERYX MELANOGNATHUS Rohwer. 



Dimorphopteryx melanognathus Rohwer, Proc. U. S. Nat. Mus., vol. 39, No. 1739, 

 1910, p. 205. 



Known from the unique female type. 



DIMORPHOPTERYX ABNORMIS, new species. 



Very distinct in color, strongly punctured mesoscutum, elevated 

 scutellum. 



Female. — ^Length 6 mm. Labrum broadly rounded apically; cly- 

 peus sparsely punctured, shallowly emarginate apically, lobes hardly 

 defined; head as in pinguis, except the rounded walls of the ocellar 

 basin; antennae typical not nodose at apex beneath; mesoscutum 

 and prescutum with rather close well defined punctures ; mesoepister- 

 num very coarsely punctato-reticulate; scutellum closely, strongly 

 punctured, elevated; venation normal except that the transverse 

 radius is entirely wanting; sheath obtusely pointed apically. Black; 

 clypeus, labrum, mandibles (apicies piceous), tegulse, legs (apicies 

 of posterior femora black) and entire abdomen rufo-ferruginous 

 (parts of legs somewhat paler) ; antennss, mesoprescutum, and poster- 

 ior margin of pronotum rufous; scutellum yellow; wings hyaline, 

 venation pale brown. 



Male. — Length 6 mm. Differs from the female in the rufous 

 scutellum and upper part of mesoepisternum ; hypopygidium obtusely 

 rounded. 



A female paratype shows that the mesoepisternum may be rufous 

 in the female. 



Ottawa, Canada. Two females and one male bred from larvae on 

 cultivated plum in 1900. 



Type.— Cat. No. 13841, U.S.N.M. 



