540 GEOLOGICAL SURVEY OF THE TERRITORIES. 
EXPLANATION OF PLATE XIII. 
CHIROCEPHALUS HOLMANI Ryder, details. 
Tia, 1. Foot of the first pair, with the following one, from a female; the 1st slightly 
overlapping the 2d foot, x 4A. 
ria. 2. Tenth foot of a female; the sixth endite is turned down and the fifth turned 
up, X +A., the third and fourth endites not seen. 
Fig. 3. Third foot, showing the third and fourth endites, between the 1st and 2d, and 
the 5th, only the latter designated by the sign />. 
lig. 3a. Sixth endite from the third foot. 
Fie. 4. Frontal process of an old, large male. 
Fig. 5. Frontal process of younger, smaller male. 
Drawn by the author, with the aid of the camera lucida. 
