594 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 50. 



club hardly wider than the last funicle joint, about as long as the 

 last two, and one-half of the fourth joint of funicle, oval in shape 

 and bluntly rounded at apex. Wings as in female, but the oblique 

 hairless streak nearly reaches to posterior margin. Length, 0.75 to 

 0.9 mm. 



Entire upper parts, including front, vertex, upper half of occiput? 

 and pronotum, together with the venter of abdomen, blackish brown; 

 face, cheeks, lower half of occiput, tegulae and pleura pale brownish 

 yellow, the tegulae with the usual brown spot on posterior margin. 

 Antennae brown, with a paler spot across the inner surface of scape 

 near the middle. Legs pale yellowish, unmarked except that the 

 tip of last tarsal joint is blackish. Wings as in the female, but the 

 brown spot is fainter. 



Described from seven females, six males (type, allotype, and para- 

 types a to Jc) reared from Lecanium corylifex Fitch, Lawrence, Mass., 

 1898 (Geo. B. King), Insectary No. 8450 and 8450 04 . 



Type.Csit. No. 18364, U.S.N.M. 



2. APHYCUS ALBICORNIS, new species. 



Female. Front and vertex twice as long as wide; ocelli in an 

 equilateral triangle, the posterior pair about their own diameter 

 from eye margin; antennal scrobes shallow; eyes with a thick, but 

 very short, fine pubescence. Antennal scape flattened, linear, not 

 expanded; pedicel as long as the first three funicle joints combined; 

 joints one to three of funicle of equal length and increasing in width 

 with the last three, so that the sixth is more than twice as wide as 

 the first, the last three joints nearly twice as long as the preceding, 

 especially the fifth, which is slightly longer than the fourth and 

 sixth, all wider than long except the first, which is about as wide as 

 long; club broadly ovate, rounded at apex, about as long as the 

 last four funicle joints combined, and after collapsing, one-third 

 wider than preceding joint. Wings with a transverse, curved band 

 at end of stigmal vein of weaker, nearly colorless cilia, cilia also on 

 posterior margin near base of wing become transparent or colorless; 

 oblique hairless streak distinct above, but obscured near posterior 

 margin of wing where the cilia are weaker. Ovipositor slightly 

 protruded and unusually slender. Length, 1.0 mm., exclusive of 

 ovipositor. 



Head and body, including face, cheeks, occiput, pronotum, and 

 pleura, except the paler prepectal plates, deep, bright orange yellow, 

 the abdomen on each side having a blackish streak inclosing the 

 vibrissal plates; collar of pronotum not paler or not noticeably so 

 and without the usual dots on the corners; tegulae whitish, with 

 their posterior margin pale brown. Antennae nearly uniformly yel- 

 lowish white, with the club purer white. Legs yellowish white, 



