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obtuse, with an appendage at the tip, and the sides furnished with 
one row of flexible bristles; in the middle with the sides above the 
bristles furnished with four spines. : 
Anas. Linn. 
Fuuieuta. Ray, Leach. 
Nyroca. Fleming. 
GLAUCIUM, QUERQUEDULA. Briss. 
TyrPE. Fuligula Marilla. 
Affinities. To the following genus this bears a near affinity in the 
external form and that of the trachea and skeleton, as well as to the 
foregoing. 
GENUS. IX. NYROCA. 
Ext. Car. Pedes digitis posterioribus lobatis, externis mediis 
vix equantibus. Tibie plumate. Rostrum brevius capite, prope 
apicem latissimum, obtusum. Lamelle abbreviate, et non ad marginem 
continuate. Naressubovales, parve. Caudabrevis. Lingua obtusa, 
ad apicem appendiculata, lateribus und et in medio duplici ordine 
setarum flexilum instructis, ad latera supra has setas quinque spinis 
instructis. 
Ext. Cuar. Feet with the posterior toes lobated, the outer ones 
scarcely equal to the middle. Tibie feathered. Bill shorter than 
the head, broadest near the point, obtuse. Lamelle abbreviated, and 
not continued to the margin. Nostrils suboval, small. TZazl short. 
Tongue obtuse, with an appendage at the point; the sides with one, 
and the middle with a double rank of flexible bristles; above these 
bristles, on the sides, armed with five strong spines. 
Anas. Linn. 
Nyroca. lem. 
Type. Nyroca leucopthaimus. 
Dr. Fleming included the Scaup, Tufted Duck, and Pochards in 
his genus Nyroca. Itis, however, now restricted to the Pochards 
which want the crested head. 
Affinities. This genus, as before stated, presents an affinity to 
the last in general form, and also in that of the inferior larynx. 
GENUS X. HARELDA. 
Ext. Car. Pedes digitis posterioribus lobatis, externis mediis 
vix zequantibus. Zibie plumate. Rostrum mediocre, baso ad apicem 
