128 INSECUTOR INSCITIyE MENSTRUUS 



about as long as the lateral pairs ; and a transverse discal row. Second 

 abdominal segment in middle with four short macrochaetae in transverse 

 discal row near front margin. Third antennal joint not so widened, only 

 slightly longer than second. Male front at vertex rather narrower than 

 eye-width. Claws a little longer, distinctly longer than last tarsal joint. 

 Scutellar macrochaetae appear to be very similar to those of Eusigno- 

 soma nigrum T. Type, Uruhuasia delta, new species. 



Uruhuasia delta, new species. 



Length of body, 9.5 mm. ; of v^ng, 9 mm. One male, Uruhuasi 

 Bridge, San Gaban Canyon, about 6,500 feet, February 3, 1910, on 

 flowers of Baccharis sp. 



Differs in coloration from Uruhuasia cruciata only as follows : Third 

 antennal joint light brown, more suffused with the rust-yellow. Thoracic 

 vittae quite linear. Scutellum more thickly gold pollinose, quite covering 

 apex. The faint silvery of third and anal abdominal segments is in form 

 of broad front border to segments narrowed in middle but running back 

 on median line almost to posterior margin in a wedge-shaped pointed 

 tongue. This leaves the black running forward in two anteriorly-pointed 

 wedges on each segment. Front femora not so fully golden pollinose. 

 Both scales of tegulae bright rust-yellow like the wing-bases. 



Approaches habitus and coloration of Eusignosoma nigrum and Uru- 

 huasia cruciata. 



(To be continued.) 



Date of publication, August 3 1 , 1914. 





