1907.] Dr. Hossack: The Rats of Calcutta. 67 



Principal measurements of skulls of Calcutta M. decumanus — (contd.) 



No. 



vSerial 

 No. 



Gr. I.. 



Bas. 

 L. 



Gr. B. 



Nasal 

 L. 



lo.B. 



C.B. 



Zygom. 



Palate 



Iv. 



Dias. 



Pal. 

 For. 



Pal. 



For. 



B. 



Up. 

 Mol. 



Up. 



Mol. 



B. 



»4-( ^« 



^ 



Depth of 

 lower jaw. 



19 



165 



100 



87 



53-3 



38-8 



14-5 



35-9 



15-5 



50 



30-8 



16-5 



7-7 



15-5 



4-8 











515 



45 



275 



20 



7-5 



i8-5 



8 



265 



1575 



8-5 



4 



8 



25 







20 



213 



100 



86 



50 



39-2 



13-7 



35-2 



13-7 



49 



28-9 



16-6 



7-8 



15-6 



4-9 











51 



44 



25-5 



20 



7 



18 



7 



25 



14-75 



8-5 



4 



8 



25 



34 



16 



Total 



I02I-I 



896 



465-5 



395-5 



144-75 



343-25 



140-9 



517-5 



300-25 



177-5 



79-75 



152-25 



49-8 



543 



257-25 



Average 



510S 



44-8 



258 



197 



723 



17- 



7-4 



25-8 



151 



8-6 



3-Ç8 



7-6i 



2-4 



3J(> 



1607 



Average per- 

 centage . . 





88 



50 



38-7 



14-7 



33-6 



13-8 



50 



29-5 



17-3 



7-8 



14-9 



4-8 



66-4 



31-4 



