NOVITATES ZOOLOGICAE, Vol.. XXV. 1918. 



PL. II. 



One day old 



25-6-I9I7. 



Three weeks old. 

 ^3-7-1917 



Five weeks old 

 20-6-1917. 



Seven weeks old. 

 5-S-I9IA. 



Nine weeks old. 

 23-8-1916. 



Nearly adult, first winter. 

 10-1-1917. 



M€NPES PRESS, WATFORD 



Adult. 

 25-1-1917. 



Frances Pitt, del. 



