398 THK CANADIAN ENTOMOLOGIST. 



length to the fifth; dorsulum and the scutellum sculptured like the head; 

 the inner tooth of the tarsal claws large ; the stigma is rounded on the 

 lower margin, broader at the base ; the third cubital cell receives the 

 transverse radius near the apex. Colour black ; the head and thorax 

 with a distinct greenish tinge ; clypeus, labrum, mandibles, angles of the 

 pronotum, tegulre, apex of the abdominal segments (very narrowly above, 

 but broadly on the sides and beneath) yellowish-white. Legs yellowish ; 

 a line on the coxae, trochanters, femora and posterior tibiae above black ; 

 tarsi blackish. Wings hyaline, iridescent ; venation brown, the stigma a 

 t ri tie paler. 



Male: Length, 4.5 mm. The male is like the female in all ways, 

 except the reduced amount of black on the abdomen. The hypopygidium 

 is large and rounded at the apex. The wings are a trifle dusky, and there 

 is no surrounding nervure in the hind wings. 



Type locality : Claremont, Calif. Two females and five males, 

 collected by C. F. Baker; also a female collected in the mountains near 

 Claremont. 



This species has its nearest ally in emarginata, MacG., (Boston, 

 Mass.), but the femora are black above, and the male has the abdomen 

 black above. 



Periclista occidentalism n. sp. — Female : Length, 5 to 5.5 mm. An- 

 terior margin of the clypeus truncate ; the ocellar basin not well defined ; 

 the furrows all present, and some of them narrow and distinct ; ocelli in a 

 Low triangle, the anterior ocellus the largest ; the antennae rather short, 

 the third joint longer than the fourth, the fourth and fifth equal ; the 

 mesonotum shining, with a f^w scattered punctures ; the scutellar 

 appendage is smooth, shining ; the tars d claws with a large inner tooth ; 

 stigma broader at the base ; the transverse radius received in the apical 

 third of the cell. Colour black ; anterior margin of the clypeus, the 

 labrum, a spot on the mandibles, pronotum, tegulae, the sutures of the 

 mesonotum, the upper half of the pleurae, sides of the abdomen and nar- 

 row margins of the segments above and beneath, white ox yellowish-white. 

 Legs yellowish or pallid, the femora darker and the tarsi somewhat 

 inluscated. Wings hyaline, iridescent; veins pale brown, the costa and 

 stigma paler. Sheath broad, obliquely truncate. 



\ ar. A: The transverse radius is near the middle of the third 

 cubital cell, and the stigma is narrower in a female collected in the 

 mountains near Claremont. 



Male : Length about 4 mm. The male is much like the female, 

 differing in having the markings orange-colour, and more reduced. There 



