LON RO) Use ai ON:

CXxvi

Genus CHAULELASMUS.

The bird characterized under this term is almost the sole type of the genus.

: : : : : Vol. V_ BI xibxe

336. CHAULELASMUS STREPERA : : : ;
GADWALL.
A somewhat rare winter visitant.

Genus Nyroca.

In Britain there are two species of this genus; in North-America there are others, and others again in

Australia.
337. NyRoca FERINA : : : ‘ : : : 2 : : : : Vol. V. El Xx
PocHarp.

A winter visitant, frequently taken in our decoys, and the flesh held in some esteem as representing the

celebrated Canvas-backed Duck of America.

338. Nyroca LEUCOPHTHALMUS . : : ; : : : : : ; Vol. V. BES
Wuirtr-eyYED or Ferrucinous Duck.

A spring visitor, almost exclusively so in England, but unknown in Ireland.

Genus Branva.
A fine form, the native country of which is Eastern Europe and India.
339. BRANTA RUFINA . : ; : : . : : , : : ; Vol. V.. REX:
Rep-crestep Duck.
The occurrence of this bird in England is very seldom and uncertain; still there are many British

specimens extant.

Subfamily FULIGULINA.
The birds of this subfamily, or the Diving Ducks, form an extensive group, members of which are found

in most parts of the globe, and which is well represented in the British Islands.

Genus Furieuia

340. FuLiguLa crRIsTaTaA ; : E ; : : . ; : : Vol. V. Pl. XXIII.
Turrep Duck.

A tolerably common winter visitant to the British Islands ; many remain to breed on the lakes at Clumber

and Osberton in Nottinghamshire, and doubtless on other similar sheets of water.