254 



THE ZOOLOGIST. 



Very little positive value should be attached to the girth 

 measurements taken at the base of the beaks, as may be inferred 

 by a consultation of the columns devoted to these on Table II., 

 which may be noticed particularly in the case of the three dry 

 skin specimens distinguished from the others by an asterisk, and 

 mentioned before. They prove in a striking manner that con- 

 siderable shrinkage takes place on drying out, which, if ignored 

 when admitting this measurement for a comparison of fresh with 

 cabinet specimens, may lead to erroneous deductions. 



TABLE I. 

 Indices of Flight-feathers. 





No.* 



Males. 



Females. 



t 



Beaks. 





Old. 



Young. 



Old. 



Young. 



Length 



Girth 



A 1 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



. 27 





144-4 







10 



14 



6 



7 



3 



19 



8 



2 



17 



9 



11 



20 



23 



16 



4 



5 



15 



12 



25 



1 



13 



27 



24 



21 



18 



22 



26 



mm. 



50 

 50 

 53 

 52 

 55 

 48 

 52 

 57 

 48 

 50 

 50 

 48 

 47 

 49 

 54 

 54 

 50 

 50 

 46 

 57 

 50 

 44 

 46 

 48 

 48 

 48 

 45 



mm. 

 71 





143-4 

 142-8 

 141-4 

 140-9 







70 



l J 









70 











71 



do 









70 









139-7 



66 





139-5 







70 





139-4 







70 









138-6 



73 





138-5 

 138-0 







73 



-*» 









70 









137-9 





o 







137-1 



69 



o> - 



ft 



CO 







137-0 



68 



136-05 







72 



Oi 



136-0 

 135-9 

 135-8 







69 











68 











70 





135-5 







67 





135-1 

 132-7 







75 











70 



-£ 







131-3 



64 









130-2 



75 



o 







129-8 

 129-8 



62t 



<x> " 









68 



CM 







129-3 



621 



d 







124-9 



621 













* Serial numbers of specimens in diminutive order of their indices, 

 f Numbers referring to serial arrangement of Table II. (first column). 



