PLATE II. 



[Proc. Wash. Acad. Sci., Vol. IV, PI. DC.] 



FlG. i. Psithyrus kodiakensis Ashm. $. 



2. Tetrarhapta alaskensis Ashm. 9 



3. Terobia vulgaris Ashm. 9 



4. Automalus nigropilosus Ashm. $ . 



5. Exolytus clypeattis Ashm. 9 



6. Plectocryptus yakatutensis Ashm. 9- 



The black hair-line at the side or beneath the figures represents the natural 

 length of the specimen. 



[264] (270) 



