Occasional Papers of iJie Museum of Zoology 65 



Trichomorpha eusema, sp. nov. 



PI. 25, Figs. 174-178 



A species characteristically marked in having the keels and 

 the metazonite of each ordinary segment entirely fulvous 

 caudad of the transverse sulcus and in a median spot in front 

 of it, the anterolateral portion of metazonite within the keel 

 and the prozonite deep chocolate brown to nearly black. 

 Antennae light brown. Legs fulvous. 



Dorsum low, with keels high and elevated. Posterior 

 processes of keels strongly developed, as usual, straight or 

 only slightly curved at tip in a few of the most caudal. Lat- 

 eral margin of keel with a distinct serration caudad of the 

 rounded anterior corner, otherwise smooth. A small, acute 

 tooth at angle between posterior process and caudal margin 

 of metazonite proper. (See PI. 25, Figs. 174 and 175.) 



Tergites above with a deep transverse sulcus ; area behind 

 this sulcus, divided by longitudinal sulci into longitudinally 

 oblong elevated areas extending to caudal margin or with pos- 

 terior ends set off as smaller setigerous tubercles, forming a 

 second row along the margin, typically ten or eleven areas in 

 each series. Region in front of transverse furrow with no 

 such areas set ofif by sulci, smooth or nearly so. 



Seventh leg of male shown in PI. 25, Fig. 176. 



Gonopods of male as shown in PI. 25, Figs. 177, 178. 



Length, 24 mm. ; width, 2.6 mm. 



Colombia : San Lorenzo. Two females taken in forest at 

 4,000 feet; July 14, 1913; F. M. Gaige. 



One female under a stone in a damp creek bed at 4.500 feet , 

 July 3, 1913. 



One male and one female from stump in forest at south 

 end of Cincinnati Coffee Plantation ; July 5, 1913 ; F. iM. Gaigc; 



Holotype, M. C. Z., 5,161. 



