Explanation of Plate LXXVII. 



Fig. 226. Tomicus laricis, lateral view. 



227. Baryrhyncus miles, dorso-lateral view. 



228. Crossotarsus barbahis, dorso-lateral view. 



229. Platypsylla castoris, lateral view. 



230. Bryaxis impressa, lateral view. 

 230ou „ „ , dorsal view. 



230b. „ „ , cross section near middle. 



23L Tnchopteryx (frandkollis, lateral view. 

 231a. „ „ , ventral view. 



Descriptions on pp. ."372 and 573, 506 (Platypsylla), 510 

 (Briiaxis), 507 (Trichopteryx). Explanation of the letters used uni- 

 formly on pp. 481-483. 



