620 CALIFORNIA ACADEMY OF SCIENCES. 



Length, ly^ to 2 mm. Head and thorax shining black, 

 somewhat metallic. Front immediately next antennae, 

 and face, yellowish. Antennae yellowish, blackish dis- 

 tally. Abdomen light yellowish on venter and base of 

 dorsum, dorsum of third segment more or less brownish 

 or blackish, of fourth or fifth shining blackish. Third 

 segment sometimes dark only in middle and on sides. 

 Second segment with a dark spot in middle. Legs yel- 

 low. Wings clear. 



This species is a very annoying one to travelers, caus- 

 ing irritation of the eyes and the disease known as " mal 

 de ojo." Its native name is "bovito." 



