158 CALIFORNIA ACADEMY OF SCIENCES. 



Description of female. Body, length 1.80 mm., width 

 .7 mm. 



Head, length .28 mm., width .5 mm.; semilunar; twice 

 as wide as long, front with two short hairs at the middle, 

 and on each side in front of the ocular region two short 

 hairs and a long one; palpi slightly projecting; ocular 

 margin straight or very faintly concave; temporal margin 

 w r ith four long pustulated hairs and several short ones; 

 occipital margin concave w r ith one long pustulated hair on 

 each side; head golden brown with fuscous clouding, 

 occipital margin and ocular fleck black; curving line 

 bounding inwardly the antennal region black inwardly 

 shading into dark brown outwardly; a transversal line 

 even with the mandibles and expanded at outer ends, dark 

 brown. 



Prothorax, seven-eighths as broad as head, lateral angles 

 very obtusely rounded, almost truncate, with two spines 

 and a long hair; behind the angle on latero-posterior side 

 a spine, then two hairs, and on the straight posterior mar- 

 gin three hairs on each side of the middle ; color smoky 

 brown with a distinct transverse darker line in front of 

 the middle and not reaching the lateral margins ; outside 

 of each end of this line a short, slightly curving, longitu- 

 dinal, dark line; the latero-posterior sides narrowly edged 

 with black. Metathorax just as wide as head, narrow 

 anteriorly with rapidly diverging sides, mesothorax dis- 

 tinctly separated by marginal constriction and dark trans- 

 verse line; posterior angles of mesothorax bare, sides of 

 meso- and metathorax bare ; posterior angles of meta- 

 thorax with a spine and the terminal one of a series of hairs 

 ranged thickly along the weakly convex posterior margin; 

 metathorax with a broad, transverse, fuscous band across 

 posterior half. Sternal markings composed of small me- 

 dian blotch on prothorax with lateral linear processes; a 



