66 SIMIIDJ5. 



The following are the measurements of this female :— ^^^^^^ 



Tip of muzzle to root of tail along side i/ ^ - 



Length of the tail 



„ of hand to tip of middle finger 



of foot to tip of middle toe 



'5 

 Breadth between inner angles of eyes 



„ across outer angles ....•••••• 



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



Pig. 7.— Lateral view of the skull of the Irawady monkey (?) M. asscimensis. 



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 ; 

 but 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. 



