SNOW GOOSE. 



ANSERES. 



275 



ANATID.E. 





Chen hyperboreus (Pallas '•"). 

 THE SNOW GOOSE. 



Chen, Bole \. — Bill shorter than the head, very robust, and higher than broad 

 at the base ; the culmen slightly convex, the outline of the lower mandible 

 decidedly so, leaving an elliptical spice displaying the lainellre. Nostrils sub- 

 basal. Feathers on the neck less conspicuously furrowed than in true A7}Sfr. 

 Wings long, full, the .second quill-fe:vthcr the longest. Tail rather short and 

 rounded. Tibia featherei to the joint ; tarsus moderately long, reticulate ; 

 three anterior toes connected by a membrane ; hind toe short and elevated. 



* Spicilcgia Zoologica, i. pt. 6, p. 25 (1767). 



+ Isis, 1822, p. 563. For an Anscrioe genus, Cheyi is tolerably defined, and in 

 all the species which compose it, white is the predominating colour. 



