DETKRMiyATlON OF AGE IN BATS. 259 



Fig. TV. — Foiirth stage (about 3i years), a and a', minimnni of wear 

 ( $ , Seringapatam, I8th October, 1912, G.C.S. 1938)./; and //, 

 maximum ( $ , same place and date, G.C.S, 1944). 



Fig. V. — Fifth stage (about 4^ years), a and a', minimum of wear 

 ( 2 , Seringapatam, 18th October 1912, G.C.S. 1940). handb', 

 medium degree of wear ( $ , same place, 19th October, 1912, 

 G.C.S. 1951), c and c', maximiim ($, same place, 18th 

 October, 1912, G.C. S. 1945). 



