24 



Mr. B. F. Cumniings on the Head and 



their place of insertion into the front of the head one on each 

 side of the clypeus, are correspondingly short, very broad, 

 and plate-like. Fig. 1 shows the top or epicranial area of 



Ficr. 2. 



CL 



a. Head of ^thalopteni dispar (seen from in front). Enlarged, semi 



diagrammatic. 



b. Lobe, highly magniiied. 



CI, clypeus ; E, eye ; G, geua ; M, mandible ; L, labrum ; H, haustellura ; 

 Lb, lobe; SL, semicircular "ledge." 



the head. The clypeus in the front of the head bulges out- 

 wards and is very convex. It is distinctly marked off' from 



