604 PROCEEDINGS OP THE NATIONAL MUSEUM. vol.50. 



streak along the lower margin, the base of pedicel brownish, the club 

 black, rest of pedicel and funicle yellow with the first funicle joint 

 slightly dusky. 



Redescribed from one female (type) reared from Lecanium on elm, 

 Champaign, Illinois, April 29, 1896 (W. G. Johnson), one female, 

 one male reared from Lecanium jltchii Signoret, Trenton, Ontario, 

 and five females reared from Lecanium. nigrofasciatum Pergande, 

 Mount Alto, Pennsylvania, June, 1913 (F. L. Simanton). 



Type.— Cat. No. 5040, U.S.N.M. 



10. APHYCUS COCKERELLI Howard. 



Fig. 9. 



Aphycus cockerelU B.owAUD, Proc. U.S.Nat.Miis., vol. 21, 1898, pp. 240, 243. 



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

 acute-angled triangle, the posterior pair a little over one-half their 

 own diameter from the eye margin; antennal scrobes broad and 

 shallow, the facial prominence but slightly elevated; eyes barely 

 pubescent. Antennal scape about one-half as wide as long, widest 

 across the middle; pedicel as long at the first three funicle joints com- 

 bined; first two funicle joints slightly wider than long and subequal, 

 the next two increasing in width but not in length, the sixth slightly 

 longer than the first four, the fifth still more so, both about twice as 

 wide as the first joint; club very broadly oval, bluntly rounded or 

 sub truncate at apex, about one-fourth wider than the preceding joint 

 and a little longer than the last three funicle joints combined. Wings 

 with the cHiation not conspicuously darkened yet with a narrow, 

 curved band of greater transparency at end of the stigmal vein, which 

 attains neither anterior nor the posterior border of the wing; oblique 

 hairless streak obliterated above before reaching the stigmal vein, 

 interrupted below with the cut-off portion almost connecting with the 

 rather distinct basal hairless streak. Length, 1.25 mm. 



Front, vertex, occiput, mesonotum, metanotum, propodeum, and 

 dorsum of abdomen pale cadmium yellow, purer or brighter yellow 

 on the head and brownish on the metanotum, propodeum, and middle 

 of the abdomen; face, cheeks, collar of pronotum, tegulae, and entire 

 underparts creamy yellowish white, the usual dots on collar and tegu- 

 lae obsolete; concealed part of the pronotum bro\\Ti. Antennal scape 

 except base, apex, and a narrow line on the upper margin, the basal 

 third of pedicel, first two funicle joints, and club black, the rest of 

 antenna yellowish white. Legs concolorous with underparts; the 

 middle tibiae marked with two minute, brown dots on the outer sur- 

 face near base, dots on other tibiae much fainter and nearly obsolete; 

 last joint of the tarsi blackish at apex. Wings hyaline, the more 

 transparent band hardly visible unless wing is mounted in balsam; 

 the veins pale yellowish. 



