Occasional Papers of the Museum of Zooiuyx 69 



One recently moulted female agreeing in appearance with the 

 l)receding male. 



San Lorenzo; July i, 1913- One male on trail between 

 2,000 and 4,500 feet, in heavy forest. 



Holotype, M. C. Z., 5,i(:8. 



This species in the exceptionally small size and general 

 structure of the male gonopods is obviously close to the Ecua- 

 dorean C. annatus Silvestri and the Colombian C. ripariiis 

 Carl. The terminal process of the gonopods is very similar 

 to that of yi pari us, though the sickle-shaped end portion is 

 somewhat less slender and the broad tooth proximad of it 

 arises from the ectal edge, not from the mesal, as described 

 and figured by Carl for riparius. It has a tooth on the caudal 

 margin of the keels not present in riparius. The keels are 

 yellow forward to anterior corner instead of only back of 

 middle. 



Chondrodesmus cerasinopus, sp. nov. 

 PI. 26, Figs. 1S3, 184 



A species resembling the preceding one. The dorsum deep 

 brown rather than black, with the light color of keels not so 

 bright a yellow, more horn-colored, and continuing farther 

 forward on the anterior corners. The entire head is dark, 

 brownish black, the clypeal region not pale as it is in the other 

 species. Legs and antennae contrasting in being of a uniform 

 dark cherry red. 



The dorsum is more strongly arched and the keels more 

 depressed. The posterior angles of keels in general less pro- 

 duced and lacking an obtuse tooth on posterior margin, this 

 being often finely granular or uneven. The marginal thicken- 

 ing of the keel on the poriferous segments is notably more 



