1907.] 



Dr. Hossack : The Rats of Calcutta. 



53 



Mus RATTus. Below IS cm. head and body. 



No. 



Ser. 

 No. 



Sex. 



Head and 

 body. 



Tau. 



Hind foot. 



Ear. 



Remarks. 



1 



54 



9 



132 



100 



20*2 



153 



3-5 



26-5 



1-8 



13-6 



Y.W.B. 



2 



65 



9 



14 



100 



188 



134-2 



3-4 



24-2 



2-1 



15 



Do. 



3 



66 



(? 



135 



100 



182 



134-8 



3 



22-2 



1-8 



13-3 



Do. 



4 



67 



9 



135 



100 



i8-5 



137 



3-1 



22-9 



1-8 



13-3 



Do. 



5 



70 



c? 



13-5 



100 



18 



133-3 



3 



22-2 



2 



14-8 



Black rat. 



6 



85 



<? 



137 



100 



177 



129-1 



3-1 



22-6 



1-9 



13-8 



Y.W.B. 



7 



87 





135 



100 



18 



133-3 



3-1 



22-8 



1-7 



12-5 



Do. 



8 



157 



9 



138 



100 



19 



137-6 



3-1 



22-4 



1-7 



12-3 



Do. 



9 



164 



9 



14 



100 



205 



146-7 



3-1 



22-1 



2 



14-2 



Do. 



10 



147 



9 



14 



100 



i8-5 



132-1 



3-1 



22-1 





•• 



Do. 



11 



260 



-? 



14-2 



100 



19-5 



129-4 



3-1 



21-8 





•• 



Y.G.B. 



12 



86 



c? 



148 



100 



19 



128-3 



3-2 



21-5 



2-1 



14-1 



Y.W.B. 



13 



273 





14 



100 



17-5 



125 



3-2 



22-8 



1-9 



13-5 





14 



274 





147 



100 



16 



108-9 



3-2 



21-7 



2-1 



14-2 





15 



256 



d 



14-2 



100 



i6-5 



1161 



3-1 



21-8 



2 



1408 



Cinnamon rat with Y.W.B. 



16 

 17 



18 



292 

 294 

 295 



9 



2 



14 

 13 

 13 



100 

 100 

 100 



18 



17 

 i8-5 



128-5 

 130-7 

 142-3 



3-1 

 3-1 

 3-2 



22-1 

 23-8 

 24-6 



1-9 

 1-8 



i-8 



13-5 



13-8 

 13-8 



Y.W.B. edged with isa- 



belline. 

 Grey breast spot ; white 



tip to tail. 

 G.W.B. 



19 



296 



c? 



14 



100 



16 



114-2 



33 



23-5 



1-9 



13-5 



Y.W.B. 



20 



301 



d- 



135 



100 



175 



129-6 



3-2 



23-7 



2 



14-8 



G. breast stripe. 



21 



302 



9 



14 



100 



187 



133-5 



3-1 



221 



1-9 



13-5 



G.W.B. 



Total figures 





290- 1 





381-6 





66-3 





36-2 







Average figur( 



ÏS 



13-81 



•• 



1817 



•• 



3-15 



•• 



1-9 



13-76 





Average perce 



ntage 





100 





13512 



•• 



22-82 



•• 



13-76 





Y.W.B. =: yellowish white beUy. G.=grey. G.W.=greyish white. O.G.=:orange grey. 



These young rats were mostly collected early in my investigation when I did not note particularly the 

 presence or absence of spots and stripes on the belly. 



The large figures in the second column under each heading represent the percentage of the length 

 of the head and body. The serial number refers to the numbering in my collection. 



