62 CALIFORNIA ACADEMY OF SCIENCES. 



a few short spines on the joints, especially numerous 

 and strong on the first two joints; eye with one long 

 hair, and near the posterior margin a second long hair; 

 temples rounding, with three long, pustulated, marginal 

 hairs and one short prickle, occipital margin slightly 

 convex; signature distinct, anterior margin concave, 

 with a slight lateral constriction near the anterior 

 angles, posterior angles extended backward, posterior 

 margin extending in a long, acute angle beyond the 

 mandibles; antennal bands distinctly interrupted at the 

 suture, dark chestnut-brown, posterior extremities in- 

 ward and back, meeting well defined, diverging occip- 

 ital bands; temples dark chestnut-brown, with narrow 

 blackish margins, interrupted by large pustulations» 



Prothorax small, lateral margins strongly rounding; 

 one long pustulated hair in the posterior angle; lateral 

 blotches dark chestnut-brown, separated by a pale 

 median line; blackish lateral borders. Metathorax with 

 strongly divergent lateral margins nearly as wide as 

 the head; a series of long pustulated hairs on the angu- 

 lated posterior margin; lateral blotches dark, separated 

 hy a pale median line which widens distinctly near 

 the middle; bands of blackish brown on the lateral and 

 posterior margins. Sternal markings composed only of 

 the distinct intercoxal lines between the pro- and meso- 

 thoracic legs. Legs pale brown with dark bands. 



Abdomen broadly ovate, segments distinctly narrow- 

 ing on the median line; one to three long hairs in the 

 posterior angles; many long, pustulated, dorsal hairs in 

 a transverse series on the posterior margin of each 

 segment; lateral transverse triangular blotches dark 

 chestnut-brown, slightly darker on the lateral margin; 

 median portion of the abdomen un colored; posterior 

 margin of the transverse blotches interrupted by un- 

 colored pustulations; segment 8 entirely dark brown; 



