90 CALIFORNIA ACADEMY OF SCIENCES. 



second segment longest, third, fourth and fifth segments 

 about equal; temporal angles with two hairs; eyes with 

 a short spine ; occipital margin straight or slightly convex; 

 signature broadly shield-shaped, constricted near the 

 front, anterior margin truncate or slightly emarginated, 

 posterior margin with a darker colored obtuse angle ; 

 angulated antennal bands dark colored and specially dis- 

 tinct; occipital bands distinct, widely diverging, and in- 

 terrupted by a diagonally transverse uncolored line; 

 temples dark brown, narrowly margined with black; oc- 

 cipital margin between bases of occipital bands with 

 border of same width and color as occipital bands, paler 

 in the middle. 



Prothorax short, broad with slightly diverging sides 

 and rounded posterior angles, with one hair; with mar- 

 ginal lateral bands bending inwards along posterior mar- 

 gin. Metathorax pentagonal, angled on abdomen, with 

 a series of seven pustulated hairs ranged along latero- 

 posterior margins beginning at lateral angles; last hair of 

 each series removed from others and near the posterior 

 angle; segment mostly brown, with a dark lateral blotch 

 in each lateral angle extending indistinctly along latero- 

 anterior sides. Legs light brown, with dark brown mark- 

 ings. Sternal markings consisting of a short, broad, 

 transverse line in front of the mesocoxas, terminating 

 inwardly in an expanded circular spot; a distinct, narrow, 

 transverse, intercoxal line between meso- and metacoxae, 

 bending backward and margining narrowly the coxal cav- 

 ity, and four small median spots, the hindmost of which 

 is the largest. 



Abdomen short, broadly ovate, segments 1-7 with 

 elongate, narrow, brown triangles, with acute apex in- 

 wardly; each one of segments 2—6 with three pustulated 

 hairs, one near the lateral margin of the triangle and two 



