48 



STATE BOARD OF AGRICULTURE. 



A. 



may easily mistake it for a para- 

 site Found also among col- 

 lections of natural history speci- 

 mens and is easily held in check 

 by a free use of naphthaline, 

 purpurea Aaron. Near Phila- 

 delphia. 



DORYOPTERYX Aaron. 

 D. pallida Aaron. Philadelphia 



Family PSOCIDiE. 



CJECILITJS Curt. 

 C. deflnitus Aaron. Philadelphia. 

 Fig. n —A book-louse, clothiiu sp.; much en- O. impactus Aaron. Philadelphia. 



O. pedicularis Linn. Massachu- 

 setts, New York, Illinois. 



larged. This represents the form com- 

 monly lound in houses. 



ELIPSOCUS Hagen. 



E. pumilis Hagen. New York. 



E. unipunctatus Muell. New York, Massachusetts. 



E. maculosus Aaron. Philadelphia. 



MY/OPSOCUS Hagen. 

 M. lugens Harr. Massachusetts to District Columbia. 



PERIPSOCUS Hagen. 

 P. madidus Hagen. New York to Georgia. 



AMPHIENTOMUM Pict. 

 A. hageni Pack. Philadelphia. 



AMPHIGERONTIA Kolbe. 



A juvenilis Kolbe. Pennsylvania. 



A. moestus Hagen. New England, Georgia. 



A variegatus Fabr. New York to Georgia. 



PSOOUS Latr. 

 P. atratus Aaron. Philadelphia. 



P. contaminatus Hagen. New York to District Columbia. 

 P. inornatus Aaron. Philadelphia. 



