140 



DISCOVERY REPORTS 



time of collection. The exception was no. 415, which is one of the smallest animals of 

 this series ; but it was of quite exceptional ferocity and had indeed to be killed because 

 its repeated and furious attacks prevented me from approaching a cow which I had shot. 

 The cow had just been covered by this bull and sections of his testis and epididymis 

 show abundance of spermatozoa, so that it is quite clear that in spite of his relatively 

 small size this was an animal in fullest sexual activity. I have observed on other occasions 

 that it is not always the largest males which are the most successful. 



2001 



190 



£ 160 

 u 



c 



^170 



3- 

 tj 



CD 



160 



150 



140 



60 



10 20 30 40 50 



Weight of Pairs of Ovaries in gm. 



Fig. 5. Body length and weight of pairs of ovaries. 56 non-pregnant females. 



Data referring to the genitalia are shown below in Table VI, arranged in chronological 



order form March to January, that is, from after one breeding season to the peak of 



the next. 



Table VI 



