THE CANADIAN ENTOMOLOGIST. 11 



narrow ; first segment, under the scutellum, the second with a median 

 stripe, the third with a stripe more or less dilated behind, and the fourth 

 chiefly, black. The anterior femora behind with long fine light yellow 

 hair. Wings nearly hyaline, the costal cells scarcely infuscated. 



Two specimens, Mt. Hood, Or. The moderately abundant, long, Hght 

 yellow fine hair on face, pleura and four anterior femora is characteristic. 



GONIA EXUL, n. sp. 



$ . Length 12, 13 m. m. Front and face light yellowj, with a semi- 

 translucent appearance as though oiled ; when seen obliquely, with a sil- 

 very sheen ; sides of the face with numerous, short, black bristles, on the 

 inner part, near the sides of the median depression, with three or four 

 moderately stout bristles ; median depression small and narrow, not as 

 wide as the sides ; cheeks without black bristles. Antennae blackish 

 brown, second joint and base of third yellow ; second joint about one- 

 third the length of the third ; arista variable, third joint not twice the 

 length of the second. Dorsum of thorax gray pollinose, when seen from 

 behind leaving four moderately broad stripes, the margins more or less 

 and the scutellum yellow. Abdomen yellowish red ; first segment under 

 the scutellum, the second with a broad median stripe, the third except the 

 anterior angles, or, rather, with a large triangle reaching the whole width 

 of the segment behind and touching in front more or less broadly, the 

 dorsum of the fourth wholly black ; pollen of the whole abdomen variable 

 in different reflections, but most conspicuous on the base of the third and 

 the whole of the fourth segments. Wings nearly hyaline, the veins yel- 

 lowish, except posteriorly. 



Ten specimens, Connecticut, Massachusetts, New York. 



a. Males from California, that I cannot distinguish, have the antennae 

 wholly black, the third joint five or six times the length of the second, the 

 face strongly silvery pollinose, and the claws and pulvilli very large, con- 

 siderably longer than the terminal joint of the tarsi. In some, the black 

 triangle on the third abdominal segment is much smaller. A female 

 with them seems to agree in all respects with the Eastern specimens. 



b. A female specimen from California, with the abdomen marked 

 similarly, has the third joint of the antennae shorter, not more than twice 

 the length of the second, the second joint of the arista very short, and 

 the bristles on the sides of the median depression not parallel with the 

 edge, but divergent, whisker-like. 



