114 CALIFORNIA ACADEMY OF SCIENCES. 



divided, the larger and anterior portion lying in the 

 angle of the ocular emargination, while the smaller, 

 posterior portion lies apparently on a ridge that 

 extends back across the temples; temples prominent; 

 anterior margin almost at right angles with the median 

 line of the head; ocular fringe prominent, extending 

 as far as the anterior temporal angle, a few short hairs 

 on this angle, two long hairs and a few short spines on 

 the lateral margins and the posterior rounding angles; 

 occipital margin medially convex; head smoky, fulvous, 

 distinct, with slightly darker bands extending towards 

 the lateral margin from the base of the mandibles 

 which are dark brown; a V-shaped uncolored marking, 

 each branch extending from the slight swelling in front 

 of the ocular emargination back two-thirds of the dis- 

 tance to the occipital margin, Avhere the uncolored lines 

 meet at the apex of the V; ocular blotches black, even, 

 angular, extending forward as far as the uncolored 

 branch of the V; temples very narrowly bordered with 

 dark brown on the posterior angles; occipital blotches 

 dark brown to black, sharply defined except on the 

 anterior extremity, where they send out a sharp angular 

 blotch; lateral extremities long and gradually narrow- 

 ing, inner extremities blunt, separated by a fulvous 

 median space. 



Prothorax, lateral angles bluntly rounding, with one 

 long hair and a short spine; lateral margin slightly 

 concave, latero-posterior angles with no hair; posterior 

 margin rounding on the mesothorax; two long hairs on 

 the posterior margin near the lateral posterior angles; 

 evenly fulvous, slightly darker on the lateral margins; 

 chitin transverse and longitudinal bars distinct. Meso- 

 thorax with sides diverging, posterior angles slightly 

 protruding, separated distinctly from the metathorax, 

 a long hair on the lateral margin, a dark marginal band 



