184 



These are photographed and reproduced in a plate in this Bulletin, 

 showing decidedly that this reptile is, or at least at times may be 

 ovoviviparous, or bearing living young. The young are borne during 

 the latter part of August or September. During the first week of 

 September we found specimens ten inches in length, which showed 

 the same characters of striking, spreading, blowing, simulating 

 death as have been described in this Bulletin for the adult. 



The food of the H^og-nosed Adder reported in literature is as 

 follows: Mice (Morse); birds' eggs (International Encyclopedia); 

 toads and frogs (Morse), and insects (Holbrook). No one has defi- 

 nitely published a statement of their own observations upon the 

 food of this serpent, and consequently little is known about it 

 with certainty. 



Fig. 19. — Diagram showing the percentages of 

 Food Items of Spreading Adder or Blowing Viper 

 (Hetcnxlon plati rhinos ) : 41% per cent. Toads; 12% 

 per cent. Insects; 4 per cent. Birds; 33 per cent. In- 

 sects from Toads; 4 per cent. Insects from Birds; 

 4 per cent. Salamanders. 



Of the twenty-seven specimens which we have examined we found 

 the following number of individuals with each of the food materials 

 coiiliiiiicd in the table below: 



No. Specimens: 

 6 

 4 

 1 

 1 

 1 

 1 

 2 



Pood Materials: 



Undet. Insect fragments. 



Insects with Toad remains. 



Insects with Bird remains. 



Acrididae (Grasshox>pers). 



Stink-bug. 



17-year Cicada. 



Undet. LiepidoT>tera. 



