PLATE XXVIII. 



Bythoscopus alni. (Page 97.) 



Fig. 1. — Female with closed elytron. 



Fig. 1 a. — Male variety of the same, with brighter 

 colouring. 



Fig. 1 h. — Frons, clypeiis, and rostrum of the same. 



Fig. 1 6'. — Similar parts seen in profile. The face is 

 somewhat convex. 



Fig. 1 d. — Part of the tibia with its serratures and 

 the three-jointed tarsus. 



Bythoscopus rufusculus. (Page 98.) 



Fig. 2. — Female with expanded wings. The stria- 

 tions are horizontal on the pronotum. 

 Fig. 2 a. — A redder female variety. 

 Fig. 2 h. — Front view of the head with the ocelli. 

 Fig. 2 c. — Part of the tri-prismatic tibia. 



Bythoscopus flavicollis. (Page 98.) 



Fig. 3. — Side view of the female insect. 

 Fig. 3«. — Pygofer of the same, showing the saw 

 lying between the valves. 



