PROCEEDINQS 



OF THE 



WASHINGTON ACADEMY OF SCIENCES. 



Vol. II, pp. 539-540. December 20, 1900. 



PAPERS FROM THE HARRIMAN ALASKA 

 EXPEDITION. 



XIX. 



ENTOMOLOGICAL RESULTS (13) : 



PSYLLID^. 



By E. a. Schwarz. 



Only a few specimens of this family were collected during 

 the Harriman Alaska Expedition. Since most of them are 

 more or less immature, and since no record of their food-plants 

 has been preserved, it is not deemed advisable to describe them, 

 although at least two of the species, and possibly also the third 

 may be undescribed. Very little is known of the Psyllid fauna 

 of the boreal regions of North America, but judging from the 

 material preserved in the U. S. National Museum (mostly from 

 Labrador, New Hampshire, Lake Superior, and the high moun- 

 tains of Utah), it would seem that only four genera of this 

 family occur in boreal North America, namely, Livia, Apha- 

 lara^ Psylla, and Trioza^ all of very wide distribution both in 

 the Old World and New World, and all, with the exception of 

 Livia, extending to the Tropics. No species has hitherto been 

 recorded from Alaska. 



Aphalara n. sp. 



Fox Point, July (no date), 4 specimens; Popof Island, July 7 and 

 9, 2 specimens; Belkofsky, July 22, i specimen. 



(539) 



