igo;.] 



Dr. Hossack : The Rats of Calcutta. 



6i 



Principal measurements of skulls of Calcutta Mus rattus 17 cm. and under 18 cm. 



No. 



1 







•'s 



1 



Sex. 



1 



G.L. 



pq J 



G.B. 



NX. 



lo. 

 length. 



C.B. Zy. PI. 



Pal. 

 length. 



a 



a 

 5 







P.F.B. 



i4 



Up. M.B. 



Length of 

 lower jaw. 



Depth of 

 lower jaw. 



1 



56 



9 



42 

 100 



34 

 80-9 



.; 



145 

 34-5 



6 



14-2 



14-5 

 34-5 



5 

 11-9 



20 



47-6 



II-5 

 27-3 



7 

 16-6 



i 



7 

 16-6 



2 



4-7 



:: 





2 



144 



2 



42 



100 



335 



79-7 



•• 



14-5 

 34-5 



55 

 13-09 



16 



38 09 



5 

 11-9 



195 

 46-4 



II 

 261 



7 

 16-6 



2-5 

 5-9 



7 

 16-6 



2 



4-7 



. . 



, , 



3 



145 



1 



1 

 43 

 100 



36 



83-07 



, . 



16 

 3702 



6 

 13-9 



16 

 37-02 



6 

 13-9 



21 



48-8 



12 



27-9 



8 



18-4 



325 



7-55 



7 

 16-2 



2 



4-6 



. . 



, , 



4 



184 



9 



1 



41 

 100 



35 

 85-3 



20 



48-7 



14-25 

 34-75 



6 

 14-6 



16-25 

 39-63 



55 

 13-4 



20-5 

 50 



II 



26-8 



7 

 1707 



2-5 

 6-69 



7 

 17-07 



2 



4-8 



25 

 60-9 



12-5 

 30-4 



5 



221 



9 



43 

 100 



355 



82-5 



21 



48-8 



155 

 3604 



6 

 13-9 



15-5 

 36-04 



5 

 11-6 



21 



48-8 



II-5 

 26-7 



8 

 18-4 



3 



6-9 



75 

 17-4 



2 



4-6 





. . 



6 



259 



Ç 



41 

 100 



34 



82-9 



20 



48-7 



15-5 



37-8 



6 

 14-6 



15 

 36-5 



5 

 12-2 



19-25 

 46-95 



12 



29-2 



7-5 

 18-2 



3 

 7-3 



7 

 17-07 



2 



4-8 



25 



60-9 



12-5 

 30-4 



7 



279 



9 



41 

 100 



34 

 82-9 



20 



48-7 



15-5 



37-8 



55 

 13-4 



1575 

 38-41 



5-25 

 12-8 



19-5 

 47-5 



12 

 29-2 



7-5 

 18-2 



3 

 7-3 



7 

 17-07 



2 



4-8 



27 

 65-8 



12-5 

 30-4 



8 



282 



9 



41-5 

 100 



35-25 

 84-9 



21 

 50-5 



145 

 34-9 



6 

 14-9 



15-5 

 37-3 



5 

 1204 



20 

 48-1 



11-5 



27-7 



8 



19-2 



3 



7-2 



75 

 18-07 



2 



4-8 



26 



62-6 



13 

 31-3 



9 



283 



i 6 



41-5 

 100 



34 

 81-9 



20 



481 



15 

 36-1 



55 

 13-2 



1 - 



1575 

 37-9 



5-25 

 12-6 



195 

 46-9 



II 75 



28-3 



8 

 19-2 



3 



7-2 



725 

 17-4 



2 



4-8 



26-5 



63-8 



14 

 33-7 



10 



290 



d 



405 

 100 



34 

 83-9 



195 

 48-1 



145 

 35-8 



575 

 141 



15 

 3703 



4-75 

 11-7 



195 

 481 



11-5 

 28-3 



75 

 18-5 



25 

 6-1 



7 

 17-2 



2 



4-9 



255 

 62-9 



II-5 



28-3 



11 



297 



S 



40 

 100 



34 



85 



1 20 

 50 



13-5 

 33-7 



5-5 

 13-7 



1575 

 39-37 



5 

 12-5 



i8-5 

 46-2 



10 



25 



7 

 17-5 



2-5 

 6-25 



725 

 18-12 



2 

 5 



23 



57-5 



12-5 

 31-25 



Total 



4565 



37925 



161-5 



163-25 



6375 



171 



56-75 



218-25 



12575 



82-5 



28-25 



78-5 



22 



178 



88-5 



Average figs. 



41-5 



! 



3447 



20-18 



14-84 



57-9 



15-54 



5-15 



19-84 



11-43 



75 



2-82 



71 



2 



254 



12-6 



Average per- 

 centage . . 



100 



83 



1 



48-4 



35-7 



13-9 



37-4 



12-4 



47-7 



27-5 



18 



6-7 



17-1 



4-8 



61-2 



i 



30-3 



