88 CALIFORNIA ACADEMY OF SCIENCES. 



fifth longer than third or fourth ; eye with short curving 

 hair; temporal margins with two hairs; occipital margin 

 straight, even slightly convex noticeable at least medi- 

 ally ; color pale smoky brown ; signature shield shaped 

 with produced acuminate posterior angle not reaching the 

 mandibles, darker colored; antennal bands dark brown, 

 distinct, posterior ends turning diagonally inwards, ante- 

 rior ends where interrupted by the suture turning in to- 

 ward the base of the point of the signature, and tapering 

 to an acuminate point; occipital bands dark brown, nar- 

 row, uniform, widely diverging, and separated from the 

 antennal bands by a pale diagonal space; region immedi- 

 ately contiguous to the eye dark brown. 



Prothorax short, broad, sides diverging, a single long 

 hair in posterior angles; hexagonal, the middle third of the 

 posterior margin making a very obtuse but distinct angle 

 with the lateral thirds; a broad, uniform, dark brown to 

 black border on the lateral margins and lateral thirds of the 

 anterior and posterior margins. Metathorax with sides rap- 

 idly diverging ; posterior margin with rounding angle on the 

 abdomen, and a series of about fourteen pustulated hairs 

 ranged along its entire length from lateral angle of one 

 side to lateral angle of the other side ; lateral margins 

 bordered with dark brown to black ; an anterior medial 

 region almost uncolored; rest of segment fuscous. Legs 

 concolorous with head and prothorax, with darker mark- 

 ings. 



Abdomen short, suborbicular, turbinated, hinder seg- 

 ments with one to three longish hairs in posterior angles; 

 segment i wholly colored, fuscous, with the blotch angu- 

 lated medially on posterior margin and emarginated nar- 

 rowly on anterior margin ; remaining segments except 

 the last with a long, lateral, transverse, fuscous blotch 

 preceded by an equally long, transverse, fuscous line, 



