1900] ENTOMOLOGICAL NEWS. 325 



about the 13th, the imagos continuing to emerge from the 22d 



to the 27th. 



Sargus oseruleifrons, n. sp. 



d^ 9 . Upper half of the front and the vertex bluish green, shin- 

 ing, about one-third narrower in the c? than in the ? ; lower half 

 of the front yellow, with a prominent transverse ridge, the upper 

 edge of which is pure white; this ridge occupies about the middle 

 of the front ; face and occiput black, facial orbits jellow, palpi 

 whitish, antennae yellow with black hairs, aristae black, the first 

 joint of the antennae slightly longer than in most species. Dorsum 

 of the thorax, the scutellura and metanotura green, in the male, 

 blue, with a slight green shade; humeral callus and pleura yellow, 

 sternum black. Abdomen bright blue in the ?, blue black in the 

 cJ^, sparsely covered with whitish pile, that is, thicker on the sides 

 and at the margin of the segments; ventor black, the anterior 

 margins of the segments yellowish. Legs light yellow, terminal 

 half of the posterior femora (on the uj)per side) and tibiae and the 

 three last joints of the tarsi dark brown Wings, brownish hya- 

 line, stigma and veins dark brown. Length, (^ 7mm., $ 8mm, 



Two specimens were taken in coition along Dunnfield creek, 

 Delaware Water Gap, N. J., July 12, 1898. 

 Theriopleotes politus, u. sp. 



(^ Face black, pile whitish, oral margins brownish, with white 

 pile that is longer than that on the face, mouth parts brownish; 

 front black, densely covered with a grayish pubescence. Antennae 

 reddish, with black hairs, upper edge of the third joint brown, tip 

 black. Thorax and scutellum black, shining, with sparse black 

 pile ; two subdorsal stripes, formed by grayish bloom, extends from 

 the anterior margin to the suture, antealar tubercle yellow, humeri 

 and postalar tubercle brownish, pleurae black, with long yellow 

 pile, especially below the base of the wing and tegulae. Abdo- 

 men; first three segments yellow, shining, translucent, with a 

 broad dorsal stripe and lateral margins brown, the remainder of 

 the segments shining black, narrowly margined posteriorly with 

 yellow, anterior margin of the four segments on each side and an 

 obsolete spot connected with the posterior margin also yellowish, 

 pile sparse blackish, second and third ventral segments yellow, 

 translucent, first and fourth brown, the others black, all except the 

 first with a posterior band of whitish bloom. Wings hyaline* 

 veins and the greater portion of the marginal and submarginal cells 

 brown. Legs black, base of the anterior tibiae and the tibiae and 

 tarsi of the middle and posterior legs brown. Length, 10mm. 



One ^, collected at Merchantville, June 28, 1899. Anxiously 

 looking for more material, I have refrained until now in de- 

 scribing this interesting species. 



