278 



DISCOVERY REPORTS 



Year 

 of age 



Total 

 length 



Newly born 

 I 



II 

 III 

 IV 

 V 



and j- 

 over j 



Newly 

 born (cJ) 



I 



II 

 III 

 IV 

 V 



VI 



and over 



83-8 

 112-7 

 118-5 

 125-0 



143-1 

 156-2 



179-5 



Table II 

 Average measurements 



Skull 

 length 



Skull 

 length 

 as% 

 of body 

 length 



Zygo- 

 matic 

 width 

 mm. 



Zygo- 

 matic 

 width 

 as% 

 of skull 

 length 



Hamulo- 



pre- 



maxillar 



length 



mm. 



Hamulo- 



pre- 



maxillar 



length 



as% 

 of skull 

 length 



Rate of growth 

 as % of 



previous year's 

 average 



Body 



Skull 



No. of 

 speci- 

 mens 



Males 



148-0 

 186-4 



201-0 

 212-5 

 224-7 

 231-0 



254-9 



i6-5 

 17-0 

 17-0 



15-7 

 14-8 

 14-2 



I0I-6 

 I lo-o 



113-5 

 117-5 

 128-3 

 140-7 



Females 



54-5 



54-7 

 53-4 

 52-3 

 55-5 

 55-2 



1 14-0 



125-3 

 132-2 

 141-0 



152-3 



173-2 



6i-2 



62-3 

 62-2 

 62-7 



65-9 

 67-9 



34-5 

 5-1 

 5-5 



14-5 

 9-2 



14-9 



25-9 

 7-8 



5-7 



5-7 



2-8 



10-3 



4-5 

 3 

 4 



4 

 3 



lO-II 



Approxi- 

 mate 

 age 

 months 



30 

 42 



54 



[66 

 -or 

 lover 



6 

 18 



30 



42 



54 



66 

 or over 



Note. The male of 83-8 cm. is the only very young animal in the collection, it had therefore to be used as representing 

 the newly born for both sexes; the figures for females in which this measurement is involved must be accepted with 

 a certain reserve. 



born" pup had to be taken as a standard for the growth of the females as well as the 

 males, and since it was a male the figure given here for the females must be accepted 

 with reserve. The growth in length during the first year is accompanied by a great 

 increase in bulk, the healthy pup of six months being a very fat and thick-set animal. 



