-( 69 )- 
43.2 mm. (1.70 in.) \», f. 
±M&%- - J*R& f« / WAi * '-ossi, |.. 7:i. 
24. Chen caerulescens (Linn.). 
C. hyperborta part., (i. R. (ir. OS ft % - ttU 
Ansei' Gcendescens (Linn.). 
„ hypevboreus juv., Wils. 
„ hyperboreas pari., Eyt. 
„ sylvestris ferti kudsonis Briss. 
Anos ccei'ulcsezns Linn. 
„ hyperborea part., Temm. 
Blue-winged Goose, Bine Snow-Goose, American Blue-winged Goose. 
Jf.^}- Blue ( i'>" c 
&J|. iS&HH* J'&'a'jR/ *fife*j>. ®2fcfc^-ft*^fc»#6#^* 
$f*/ i!li]/t^ 
m 
% 
it 
m % m 
30 in. 
2.10-2.30 
15-17 
3-3.30 
Salvadori 
26.5-30.0 
2.10-2.30 
15-17 
3-3.30 
Ridgway 
frfc !> r Rocky /iWlsftWZ^ (fU^F. m. 
Chapman^n 3 b" ft 7 I^X b 7' V )• fcjj ? ■ -Mississippi 7 
