426 CLAUDE FULLER. 



sides convex, parallel and straight ; genas faintly concave ; 

 trochantin of mandible strong and prominent. 



Frons deflected and twice depressed ; depressions separated 

 by a sliort, distinct, transverse ridge which forks at both 

 ends, the caudal prongs merging into the vertex and the 

 anterior prongs passing within the ocelli and terminating at 

 the mandible; caudal depression shallowing into vertex; 

 cephalic merging into clypeus and with a low pale-coloured 

 median mound which appears triangular and tapers back- 

 wards, the apex merging into the ridge separating the two 

 depressions. 



Eyes black, sub-renifoi-m, facing more outward than 

 forward. 



Ocelli distinct, white, surrounded by a reddish aureole ; 

 viewed from the side they appear inset in the top of low 

 mound. 



Clypeus actually oblong but with corners so obliquely 

 deflected as to give the cephalic margin (the epistome) a 

 three-sided appearance, swollen behind cephalic margin so 

 as to form a transverse, rounded ridge ; a distinct furrow or 

 wrinkle connecting frontal folds (= the clypeo-frontal 

 suture) . 



Labrum pale brownish-yellow ; somewhat polished ; with 

 yellow bristles ; short and broad ; arched and very broadly 

 cordiform ; distal mai'gin flatly brace-shaped or roundly 

 acute. 



Mandibles black ; dorsal mounds very dark reddish-brown ; 

 broad and flattened ; with wide bases and teeth ; lateral 

 margins shouldered near the base and then broadly curvate ; 

 the doi-sal surface of each with an elevated ridge which is 

 hiirh at the basal knob and extends forward to the second 

 tooth as a flattened punctate mound having a rounded 

 margin. Apical points broad, much incurved and deflected ; 

 the inner margin sinuate, at first incurvate then curvate and 

 tapering into acute incision above the first tooth ; the left 

 point longer than the right, but not quite as wide and more 

 -deflected. The left mandible longer and wider than the 



