psocus. 13 



13. P. abruptus ! 



Psocus abruptus Hag.! 



Brown, hairy ; head and thorax brassy ; antennae very slender, 

 whitish, the apical joints infuscate at their tip ; posterior femora 

 fuscous, whitish at apex ; anterior wings brown with a brassy re- 

 flection, a narrow, transverse, hyaline band before the apex, veins 

 ciliated : pterostigma elongated, ovate ; no cellule at the posterior 

 margin ; posterior wings grayish-hyaline. (Female.) 



Length to tip of wings 4 millim. Expanse of anterior wings 7 

 millim. 



Rab. Washington ; Dalton, Georgia (Osten Sacken). 



14. P. corruptus ! 



Psocus corruptus Hag.! 



Pale brown, hairy ; head and thorax brassy; eyes rather promi- 

 nent, globose, front narrower than in the preceding ; antennae 

 thicker, hairy, seta fuscous, all the articulations pale at base ; feet 

 pale ; anterior wings shining brassy-brown, pterostigma brown ; a 

 spot before the apex, upon the costal margin and a discoidal cloud, 

 grayish-hyaline ; veins with fuscous cijia ; posterior wings grayish- 

 hyaline. (Male.) 



Length to tip of wings 4 millim. Expanse of anterior wings 7 

 millim. 



Hob. Washington (Osten Sacken, 1858) ; Dalton, Georgia 

 (Osten Sacken). 



Reticulation of the wings as in the preceding. Is it the other 

 sex of that species ? 



The reticulation in Ps. abruptus and Ps. corruptus is abnormal, 

 and may constitute a distinct subgenus, or rather genus. 



15. P. salicis ! 



Psocus salicis Fitch ! Collection of de Selys Longchainps. 



Very small, brown ; head and thorax brassy ; mouth yellow ; 

 eyes very small, front broad ; antennae very slender, villose, apex 

 obscurer ; feet pale ; wings hyaline, veins brown ; pterostigma 

 hyaline, anteriorly truncated ; posterior marginal cellule elliptical. 



Length to tip of wings 1-J- millim. Expanse of wings 3 millim. 



Hob. New York (Asa Fitch). 



