- 
- Nothing that I am aware of is known concerning anatomical 
char acters, besides those mentioned in Wilson, and quoted at length 
under the head Kamp. Labradora. 
GENUS VII. CALLICHEN. 
Ext. Cuar. fedes digitis posterioribus lobatis, intermediis vix 
longissimis. Tibie plumate. Lostrum capite equale, prope basum 
latissimum. Lamelle valide, et ad marginem continuate. Nares 
subovales, magne. Cauda mediocris.. Caput cristatum. 
z 
Ext. Cuar. Feet with the posterior toes lobated, the middle 
ones scarcely the longest. Thighs feathered. Bill equal to the head, 
broadest at the base. Lamelle strong, and continued to the margin. 
_Nostrils suboval, large. Tail moderate. Head crested. 
Anas. Jinn. 
Fouieauta. Ray, Leach. 
GLAUCIUM, QUERQUEDULA. Briss. 
CALLICHEN. Brehm. 
'\. MERGOIDES nobis. 1 +f 
Type. Callichen rufina. 
- We first instituted this genus on /’. rufina, after having observed 
the trachea of that species. To this, however, will be added the 
beautiful species Fuligula caryophylacea. 
Affinities. In having bulbs on the tube of the trachea, and also 
in general form, this bird presents considerable affinity to the 
Mergansers. 
GENUS VIII. FULIGULA. 
Ext. Cuar. Pedes digitis posterioribus lobatis, externis inter | 
_mediis equantibus. TZibie plumate. Rostrum prope apicem Ilatis- 
simum, obtusum. Lamelle abbreviate et non ad marginem con- 
tinuatz. Nares subovales, parvissime. Cauda brevissima. Lingua 
obtusa ad apicem appendiculata, lateribus una, ordine setarum flexilum 
instructis; in medio ad latera supra has setas quatuoribus spinis 
instructis. 
Ext. Cuar. Feet with the hind toes lobated, the outer ones 
searcely equal to the middle. Thighs feathered. Bill broadest at 
the point, blunt. Zamelle abbreviated, and not continued to the 
margin. Nostrils suboval, very small. TZwil very short. Tongue 
