No. 1. — New Neuropteroid Insects. 



By Nathan Banks. 



On the following pages are brought together descriptions of various 

 new species, partly from the United States, partly from foreign coun- 

 tries. Except in the few particularly designated, the tj'pes are in 

 the collection of the Museum of Comparative Zoology, (Nathan 

 Banks Coll.). 



PSOCIDAE. 

 PSOCUS LONGIPENNIS, Sp. nOV. 



Type.— M. C. Z. 10,038. Colo.: Boulder, 30 August. T. D. A. 

 Cockerell. One specimen. 



Head brown, shining, a pale spot each side above near eye; antennae 

 dark, not very long-haired; thorax black, shining; abdomen brown; 

 legs pale brownish; wings hyaline; venation dark, stigmal vein 

 brown, stigma a uniform pale brown, very long and slender and 

 broadly rounded behind; discal cell four-sided, basal side convex 

 basally, outer side straight, about twice as broad above as behind, 

 the usual parts of venation hyaline; the radial sector from discal cell 

 to the forking is more strongly curved toward the stigma than in 

 most species. 



Length 7 mm. Distinct by very long wings. 



Psocus ADDiTUS, sp. nov. 



Type.— M. C. Z. 10,039. N. Y.: Sport Island, Sacandaga River, 

 27 June, C. P. Alexander; Md.: Beltsville, 9 June. N. Banks. Two 

 specimens. 



Black, head rather dull, legs brown, venation black, the usual pale 

 spaces, and besides the radial sector just beyond the connection to 

 median vein is plainly hyaline for some distance (not noticed in any 

 other species) ; a black, irregular band before middle of wing, ending 

 on the end of anal vein; the outer two thirds of the stigma dark, a 

 faint cloud behind the forking of the radial sector (as in P. striatus) ; 

 stigmal vein pale on basal part; stigma moderately long, nearly 



