1880.] MR. W. A. FORBES ON ANTILOCAPRA AMERICANA. 541 



animals abound, as tbey would be were tbe pbenomenon usual. 

 Their appearance on the animal at times indicate that they may be 

 shed ; and I suppose the evidence is sufficient that the shedding 

 occurs. But it is not penodical, or even frequent.' 



" Fortunately, we have not had long to wait before being able to 

 again test the accuracy of Mr. Bartlett's original position. 



" On December 4, the Society purchased a pair of Pronghorns, the 

 male of which was nearly or quite adult, and had ' apparently 

 lately shed his horns, as the pair which he bears were quite soft 

 when he arrived' (cf. P. Z. S. 1S80, p. 23). In confirmation of 

 this, Mr. Bartlett tells me that his horns also had then no trace of 

 the ' prong,' which subsequently grew in the ordinary position. 

 Our male animal lived in good health aad condition through the 

 summer, and grew a good (though by no means large) pair of horns. 



Fig. 2. 



Horn of Prongbuck, drawn the day after the shedding of the old horns : 



^ nat. size. 



"During the night of October 18-19th last, these horns were 

 shed ; but no trace of them could be found, after the most careful 

 search ; so that in all probability they were either devoured by the 

 animal itself, or carried away by some predatory rat, or visitor ! 



"Mr, Smit's drawings that I now exhibit were made on the spot, 

 under my supervision, the day after the shedding (October 20). 



" Fig. 1 shows the general form and size of the new horns. From 

 it it is obvious that any person who was not acquainted with the 

 mature horns of the animal would not for a moment suspect that 

 any shedding had taken place. Fig. 2 shows one of the new 



