66 SIMIIDiE. 



The following are the measurements of this female : — 



_ Inches. 



Tip of muzzle to root of tail along side . 17'2 



Length of the tail 7-6 



„ of hand to tip of middle finger ^-O 



„ of foot to tip of middle toe 6"0 



Breadth between inner angles of eyes "^ 



„ across outer angles ^'° 



The accompanying figures (figs. 7 and 8) of the skull, reduced to three-fourths 



rig. 7.— Lateral view of the skull of the Irawady monkey ( $ ) ilf. assamensin. 



Fig. 8.— Upper view of the same skull as fig. 7. 



natural size, will exemplify its characters, while the column of measurements, 

 alongside of which I have given the corresponding dimensions of a ferine individual 

 of the same sex of M. rhesus^ will illustrate wherein the two appear to differ; 

 hut as there are not sufficient materials wherewith to generalise, these must be 

 regarded more as a record of facts to aid further research than as an attempt to 

 draw any rigid line between the two species. 



