NATHAN BANKS. 41 



SyiupIiei'ObiiiS uinbratiis Banks. — Dark shining brown; abdomen 

 rather paler brown antennje and legs pale yellow; forewings uniformly dark 

 brown ; bind wings nearly hyaline, except the brown costal streak, all venation 

 brown, unmarked. In structure similar to S. occidentalis ; the first radial sector 

 connected to lower fork of the second sector, the first sector not forked till near 

 margin of wing; the costal area is quite broad. Expanse 10 mm. 



From WilliariLS, Arizona, June 10th (Barber), and A.lbuquerque, 



New Mexico (Oslar). 



Synipherobiiis angiistus Banks.— Head pale yellowish, a dark line on 

 cheeks and one near eye in front, a black spot between bases of antennje, an 

 oblique black line on each side of vertex ; antennae scarcely blackish on basal 

 third ; pronotum pale, brownish each side, nieso — and metathorax brown, with 

 median pale stripe; abdomen pale brown ; legs pale yellowish. Fore wings pale, 

 densely marked with brown, especially behind, apical margin with large dark 

 spots alternating with white ones; gradate veinlets heavily brown, longitudinal 

 veins pale, with long stretches of brown, sometimes clouding the wing, basal 

 cross-veins broadly brown, no large posterior mark. In hind wings the marginal 

 venation is brown, and the membrane faintly clouded along posterior margin 

 Fore wings long and narrow, costal area narrow at base, two radial sectors, the 

 first connected back to radius before origin of the second. In the hind wings the 

 radial sector at base is connected back to radius to form a small closed cell near 

 base of wing. Expanse 12 mm. 



One specimen from Mesilla, New Mexico (Morse), two from Los 

 Angeles, California, and others from Las Vegas Hot Springs New 

 Mexico, August (Barber) ; also from San Luis, Mexico, preying on 

 Ceroplastes. 



Symplierobius pietus Banks. — Pale brown ; prothorax rather darker ; 

 antenufe pale, black-ringed at base and blackish at tip; legs pale yellow. Fore 

 wings hyaline, with four broad brown bands in middle area of wing, the two 

 intermediate rather close together. Around the outer and i)osterior margin are 

 pale brown spots alternating with smaller whitish spots; costal area pale brown, 

 veins pale, dotted with brown ; bind wings hyaline, costal area and venation 

 pale brown. The wings are rather short, the costal area moderately broad at 

 base; the first radial sector forks before origin of second sector, but does not 

 appear to be connected to it or to radius. Expanse 9 mm. 



From southwestern Colorado (Oslar). 



Syinpherubiii!^ perparviis McLachlan. — Face pale yellow, vertex 

 pale, pronotum brown, meso-and metathorax paler brown ; abdomen brown ; 

 legs pale yellowish, hind femora brownish ; antenna; brownish, barely paler be- 

 yond. Wings hyaline, marked with brown, sometimes very heavily and indi- 

 cating three irregular bauds, two on gi-adate series and one nearer to base ; apical 

 and posterior margins white and brown alternating, longitudinal veins pale, 

 evenly marked with minute brown dots; hind wings with mostly pale venation, 

 costal area brownish, especially at pterostigma, and often indications of brown 

 patches along apical margin. Fore wings long and narrow, costal area narrow at 



TRANS. AM. ENT. SOC. XXXII. (6) DECEMBER, 190,5. 



