229 



Fig. 1. I), rotundiis murinus (Ernest P. Walker, National Zoologi- 

 cal Park). 

 Illustrating size and position \vhen moving. 



Fig. 2. D. rotundus murinus (Panamerican Sanitary Hureaii, Dr. 

 Aurelio Malaga-Alba). Illustrating the thumb. 



Fig. 3. D. rotundus murinus (Ernest P. Walker, National Zoological 

 Park). 

 Typical hanging position assumed \vhen resting. 



Fig. 4. D. rotundus murinus (Panamerican Sanitary Bureau, Dr. 

 Aurelio Malaga-.'\lba ) . Mature mouth. Central chisel-like 

 upper incisors adapted for painless blood letting. 



