452 C. J. Sundevall on the Wings of Birds. 



APPENDIX II. 



Synopsis of the number of Arm-remiges. 



Of the figures which are given below, the first always 

 indicates the number of the arm-remiges which appear nearly 

 alike in structure and size, and in this number the first is 

 always included. The last number always indicates the last, 

 decidedly shorter feathers. Where three figures occur, the 

 middle one denotes those which, without being abbreviated, 

 possess a decidedly difEcrent form ; and such occur nearly 

 always when the posterior remiges differ considerably (dif- 

 formes). The figures placed within parentheses show the 

 whole number, and when this stands alone it is generally 

 copied from Nitzsch^s ' Pterylographie,' for the purpose of 

 obtaining a more complete view. 



In the greater part of the Song-birds the number is defi- 

 nitely 9. All that are known to possess a greater number 

 (about 12 genera) are cited in the following table ; in these 

 and all which have more than 9, the number appears to be 

 subject to a little variation — for example, in Corvus comix 

 I have twice found 11. In the Waders and Water-birds it 

 appears that the variation may amount to 2 or 3, without 

 relation to the moulting. This subject deserves to be par- 

 ticularly investigated ; possibly the number is not variable. 



Passeres in general 6+3 (9) 



Fringillacoelebs,Pyrgita,Emberiza 6+1+2 „ 



OSCINES. 



Sturnus vulgaris 7+2 



Psarocolius, Wa(/l „ 



Gracula, sec. Nitzsch .... 



Alauda, Motacilla, Antlius 6+1+2 



Turdi 7+2 



Saxicola rubetra 7+2 



cenanthe 6+1+2 



Sylvia phoenicurus, iS:c 6+1+2 



rubecula 6+4 



Cinclus 6 + 3 



Troglodytes 6+3 



Menura 7+4 (11) 



