66 University of Michigan 



Trichomorpha angulella, sp. nov. 



PI. 25. Fig. 173 



General color of dorsum and keels brown, in part of a 

 chestnut cast, excepting only the caudal processes of the keels, 

 which are fulvous. Antennae brown. Legs fulvous. 



Convexity of dorsum and elevation of keels as usual. Pos- 

 terior processes of keels straight, more than usually slender 

 and acute, especially on the more posterior segments. Lateral 

 margin of keels wholly smooth excepting the usual serration 

 caudad of the anterior corner, this distinct. Caudal margin 

 wholly untoothed and smooth. (See PI. 25, Fig. 173.) Meta- 

 tergite with transverse sulcus distinct. 



Surface in front of this sulcus wholly smooth and bearing 

 a transverse series of widely separated setae ; surface caudad 

 of the sulcus a little roughened by rather fine longitudinal or 

 in part somewhat ol)lique impressed lines; a series of setae 

 along caudal border and one farther forward, the latter typ- 

 ically of six setae in all. 



Length, about 16 mm.; width, 1.6 mm. 



Colombia : San Lorenzo. Two adult and one immature 

 female at 2,500 feet; July 15, 1913. Holotype, M. C. Z., 5,165. 



Trichomorpha paurothrix, sp. nov. 

 PI. 25, Fig. 172 



Dorsum black, excepting the outer border and posterior 

 processes of keels, which are yellow ; the mesal, convex area 

 of keel mostly dark like the dorsum in general ; the processes 

 of keels bright yellow, the anterior light portion of a more 

 vague cast. Antennae dark brown, the legs a lighter, fulvous 

 brown. 



