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 different 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 NitzsclPs f 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 cornix 
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. 
Stumus vulgaris . 7+2 
Psarocolius, Wagl . „ 
Gracula, see. Nitzsch .. .... 
Alauda, Motacilla, Anthus. 6+1+2 
Turdi. 7+2 
Saxicola rubetra . 7+2 
-oenanthe . 6+1+2 
Sylvia phoenicurus, &c. 6+1+2 
-rubecula . 5+4 
Cinclus . 6 + 3 
Troglodytes . 6+3 
Menura . 7+4 
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