8 CALIFORNIA ACADEMY OF SCIENCES. 



antennal bands interrupted distinctly at the suture; 

 occipital bands distinct, divergent, connected at base; 

 ocular bands indistinct; trabecules weakly colored at 

 base, uncolored distally; antennse colored. 



Prothorax quadrangular (as exposed), with a single 

 hair in the posterior angles; posterior margin flatly 

 convex; median part paler; lateral regions darker, and 

 an indistinct posterior border. Metathorax rather 

 short, posterior margin angulated, with a series of pus- 

 tulated hairs; colored like the prothorax, paler in mid- 

 dle and with fairly distinct lateral borders. Legs con- 

 colorous with ground color of thorax, with small, darker, 

 inconspicuous marginal markings. Sternal markings 

 consisting of intercoxal lines and a very small median 

 double blotch on prothorax. (Metathorax obscure). 



Abdomen short, just as long as head and thorax; two 

 to three long hairs in posterior angles of segments and 

 numerous pustulated and other long hairs on dorsal 

 surface; narrow, blackish, lateral bands; large dark 

 brown lateral blotch, with clear stigmatal spots and 

 about five pustulations along posterior margin, and 

 leaving only a narrow median part of the abdomen 

 uncovered; on segment 8 a complete transverse band; 

 segment 9 rounded behind, with a narrow blackish pos- 

 terior border, with a few longish hairs; genitalia show- 

 ing through in segments 6-9; on ventral surface of 

 segments 1-8 a large transverse median blotch reaching 

 almost to the lateral margins. 



Female. Body, length 1.94 mm., width .8 mm.; head, 

 length .6 mm., width .56 mm.; the transverse blotches 

 of abdomen but little smaller than those of male; seg- 

 ment 9 uncolored, with small brown lateral blotches, 

 the posterior margin distinctly angularly emarginated; 



