PLATE IX. 



Fig. I. Psitkyrus kodt'akcnsis Ksh\n. $. 



2. Tetrarhapta alaskensis Ashm. 9 ■ 



3. Terobia vulgaris Ashm. 9 • 



4. Automalus 7i{gropilosiis Ashm. $ . 



5. Exolytus clyfeatns Ashm. 9 • 



6. Plectocryptus yakattitensis h-^^ww. 9- 



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

 length of the specimen. 



(264) 



