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: anatomical character being known), in what appears to us to be its — 
proper place—namely, between the genera Chenalopea and Anser. It 
agrees with the former in having a spur on the wing. 
GENUS VIII. CHENALOPEX. 
Ext. Cuar. Pedes digitis posterioribus gibbosis, “et unguibus 
robustis. TZarsi longi. Rostrum validum ad basum tuberculatum. 
Lamell@ non ad marginem rostri continuate. Nares subrotundate 
in medio rostri posite. Ale calcaria una armate. Cauda ad apicem 
truncata. 
Ext. Cuar. eet with the posterior toes gibbous, and the claws 
strong. Tarsilong. Bill strong, at the base tuberculated. Lamelle 
not continued to the margin. Nostrils rather rounded, placed in the 
middle of the bill. Wings armed with one spur. Tail squared at the 
end. 
ANSER. Auct. 
CHENALOPEX. Steph. Antigq. 
Type. Chenalopex Egyptiaca. 
Affinity. This genus, in possessing a bulb on the trachea, presents 
an affinity to the ducks; while its form and habit evidently point out 
its connection with the geese. 
SUB FAM. III. ANATIN A. 
Ext. CuHar. Rostrum latitudine altitudini sequante. Pedes 
mediocres, digiti posteriores nunquam lobati, sed aliquando gibbosi. 
Ext. Cuar. Jillin breadth and height equal. Feet moderate; 
posterior toes never lobated, but sometimes gibbous. 
Tyre. Anas. 
Hasit. Aquatic, frequenting fresh water in preference to the sea, 
feeding generally along the edges of lakes and rivers on small mol- 
luscous animals, in preference to diving for them; soft aquatic plants 
and weeds also substitute a considerable portion of their food: they 
often also feed on land. The species, having great power of flight, 
have a very wide geographical range. 
Affinities. To the Fuliguling this sub-family is connected by the 
musk duck (Carina Moschata), which, besides having a largely 
developed and slightly lobated hind toe, has the bulb situated at the 
inferior larynx compressed, and not altogether osseous, as is the case 
