128 



MICROTIN^ 



Fig. 27. 



Fig.28. 



Fig.29. 



Fig. 65. — Lower molars of Mkrotus from the Upper Freshwater Bed i 

 (Cromerian). 



(For explanation see opposite page.) 



1 For diagnoses of these species see Hinton, Ann. Mag. N.H., [9], 12, 

 p. 541, 1923 ; a full account is given in Vol. II of this Monograph. 



