13 
Ext. Guar. Jeet with the posterior toes of moderate size, and 
notlobated. Bill not broader at the tip than at the base. Lamelle 
elongated. Tongue obtuse, with an appendage at the tip, the sides 
furnished with a rank of short bristles; above these, in the middle of 
the sides, with five spines, and in the middle of the upper surface with 
a double rank of short spines. 
Anas. Linn., Gmel., Lath. 
CHAULIODES. Swainson. 
CHAULELASMUS. G. R. Gray. 
Type. Chauliodus Strepera. 
Affinity. The elongated lamelle ally this genus to the two pre- 
ceding. It appears, indeed, to be precisely intermediate between 
them ana the following. 
GENUS XIV. ANAS. 
Ext. Cuar. Pedes digitis posterioribus simplicibus, mediis longis- 
simis. TZibie parte tertia inferiore denudata. Rostrum lateribus 
parallelibus. Nares ovales, prope culmen ad basin locate. Lingua 
obtusa, ad apicem appendiculata, lateraliter una ordine setarum 
longarum et flexilum instructa, supra has setas ad latera sex spinis 
instructa, et in medio supra duplici ordine setarum brevium. 
Ext. Cuar. eet with the posterior toes simple, the middle one 
longest. Thighs withathird part naked. Bill with the sides parallel. 
Nostrils oval, placed near the culmen at the base. Zongue blunt at 
the point, with an. appendage, the sides furnished with one rank of 
long and flexible bristles; above these bristles, in the middle of the 
sides, furnished with six spines, and in the middle above with a 
double rank of short bristles. 
Anas. Linn. 
Boscnas. Swainson. 
Type. Anas Boschas. 
We have here retained the old Linnean name for this genus, 
instead of that of Boschas proposed by Mr. Swainson. 
Affinity. In size and the form of the tongue this genus approaches 
nearest to the last of any among the Anatine. 
GENUS XV. CARINA. 
Ext, Cuan. Pedes digitis posterioribus gibbosis, mediis longis- 
simis. ibe plumate. Rostrum equale, et caruncula subglobosa 
