176 



NORTH AMERICAN FAUNA 74 



Fig. 108. TendencN' toward scrotal arranj2;enient of the testes (arrow). Postero\entral 

 \ie\\ of the hindcjuarters of an adult male that was reared in capti\'ity at Marineland, 

 California. This photo \\ as taken in March, when the animal was exceptionally lean and 

 the testes enlarged. (Photo by C. C. Ray) 



