NO. 2136. REVISION OF THE GENUS APHYCUSTIMBERLAKE. 627 



paler yellow; upper half of cheeks and sides of the head pale brown; 

 propleura, prepectal plates and anterior margin of the mesopleura 

 pale yellow; rest of mesopleura and the metapleura brown; venter 

 of abdomen dusky yellowish. Antenna almost uniformly brown, 

 the apical third of pedicel whitish. Legs and wings as in the female. 



Redescribed from eight females, one male (cotypes) reared from 

 Oeroplastes species on Artemisia, Silver City, New Mexico, March, 1879 

 (H. H. Rusby); two females reared from Ceroplastes irregularis 

 CockereU, Mesilla Park, New Mexico, October 16, 1896 (C. H. T. 

 Townsend) ; and one female from Mesilla Park, New Mexico, March 

 16 (T. D. A. Cockerell). The remaining four females and one male 

 from the type series are apparently lost. 



Type. Cat. No. 2643, U.S.N.M. 



29. APHYCUS MEXICANUS Howard. 



Figs. 32, 49. 

 Aphycus mexicanus HOWARD, Proc. U. S. Nat. Mus., vol 21, 1898, pp. 241, 247. 



Female. Front and vertex about two and one-half times longer 

 than wide; ocelli in an acute-angled triangle, the posterior pair 

 about one-fourth their own diameter from the Bye margin; antennal 

 scrobes broad and rather deep; eyes rather thickly pubescent with 

 a short, fine pile. Antennal scape flattened on the underside, but 

 not expanded, about five times longer than wide; pedicel a little 

 longer than the first two funicle joints combined; first funicle joint 

 small, about one-half as long as the second and as long as wide, the 

 second, fourth, and fifth subequal in length and a little longer than 

 the third and sixth, all increasing gradually in width so that the 

 last is about twice as wide as the first but only the last distinctly 

 wider than long, the second being longer than wide; club oval, 

 obtusely rounded at apex, about one-fourth wider again than the 

 preceding joint and a little longer than the last three funicle joints 

 combined. Wings uniformly ciliated; oblique hairless streak nar- 

 rowed above and interrupted below, the cut-off portion connecting 

 with a rather indistinct branch of the basal hairless streak; stigmal 

 vein longer and slenderer than usually. Ovipositor protruded about 

 one-fourth the length of abdomen. Length: 1.4 to 1.5 mm., exclu- 

 sive of ovipositor. 



Front, vertex and mesonotum dull orange yellow; face, cheeks, 

 and underparts varying to cadmium yellow with the upper part of 

 face usually lemon yellow; center of occiput dusky; concealed part 

 of pronotum, the metanotum to a more or less degree, propodeum 

 and dorsum of abdomen blackish brown, the lateral and apical mar- 

 gins of the latter cadium yellow posterior to the vibrissae; collar of 

 pronotum dirty white with a blackish dot on each corner; propleura, 

 prepectal plates and tegulae yellowish white, the latter brown on 



