banks: new neukopteroid insects. 305 



Psocus STiCTicus, sp. nov. 



Type.— M. C. Z. 10,811. Brazil (Winthem coll.). 



Pale brown; a reddish brown mark across vertex, and each side obliquely up 

 from the cheeks through the base of the antennae to the ocelli, lower part of 

 nose reddish brown, clypeus blackish; thorax dark, with pale on sutures; 

 abdomen red-brown; legs pale, tips of tibiae and last tarsal joints dark. 

 Wings hyaline, with large brown marks (Plate 1, fig. 1); an oblique band from 

 base of stigma backward, and a median longitudinal stripe, extending down the 

 veins, covering second posterior cell, and an extension upward through the 

 apical part of the stigma, basal part of stigma yellowish. Stigma more than 

 its length from wing-tip, almost angulate behind, radial sector forks much 

 before angle of stigma, first posterior cell hardly broader at base than the areola 

 postica. Veins dark; basal part of stigmal vein yellowish; the fork of radial 

 sector margined with pale, the basal side of discal cell pale in middle of length, 

 the basal part of outer vein, and the connection to the hind margin whitish 

 hyaline; the radius and median vein mostly pale on basal parts. Antennae 

 pale, darker from middle of third joint, very slender, with very short, fine hair, 

 the third joint about as long as width of wing. In front tarsus the first and 

 second joints subequal, in hind tarsus the first joint more than twice as long 

 as the second. 



Length 7.5 mm. 



Psocus QUADRISIGNATUS, sp. IIOV. 



Type.— :M. C. Z. 10,814. Brazil (Winthem coll.). 



Pale yellowish; a brown stripe on head from ocelli clown over the nose; 

 thoracic notum has dark spots on the lobes; abdomen black at base, beyond 

 with some dark spots; legs pale, tarsi not or barely darker; antennae pale, 

 beyond middle of third joint darker, densely clothed with long hairs. Wings 

 hyaline, veins mostly pale, the forks of median toward tip are darker; two 

 large brown spots on each fore wing, a rounded one in stigma, and a subtri- 

 angular one just before basal angle of discal cell. Stigma hardly its length 

 from wing-tip, rounded behind; radial sector forks just before bend of stigma; 

 discal cell much longer than broad, much narrowed below, outer side concave; 

 first and second posterior cells about equal above on median vein (Plate 3, 

 fig. 34). In front tarsus the first joint is twice as long as the last; in hind 

 tarsus the first joint nearly four times as long as the last. 



Length 4 mm. 



Psocus COQUILLETTI, sp. llOV. 



Type.— M. C. Z. 10,813. Calif.: Los Angeles (Coquillett coll.). 



Brown; a curved pale mark just inward of eyes, and near bases of antennae, 

 antennae pale, tips of joints darker, with fine, very short hairs, third joint not 



