PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 183 



¥. Tail cnneate; tlie young witli the down on the sides of the bill not forming 

 loral antisB.* 

 ci. Inner webs of ontcr four primaries and outer webs of the second, third, 

 fourth, and fifth sinuated ; the young with the down on the sides of the 

 bill reaching almost to the nostrils; webs of the feet scalloped. 



1. Stlmnelus Ste.jnegee 1882. 

 c^. Inner webs of outer three primaries and out«r webs of the second, third, 

 and fourth sinuated ; the young with the down on the sides of the bill 

 terminating far back of the nostrils ; webs of the feet straight, not scal- 

 loped. 



•2. Cijgnus Bechst. 1803. 



&2. Tail rounded; the young with the down on the sides of the bill forming very 

 distinct loral autiaj. 



3. Olor Wagl. 1832. 

 a". Piedominant color of the adults blackish ; the young with naked lores 



tertiaries 



and scapulars crisp ; tail shorter than the middle toe with claw. 

 4. Chenopis Wagl. 1832. 

 Geographical distribution. 



The Cygmme appear both in the northern and the southern hemi- 

 spheres as extra-tropical birds, no representatives of these large Lamelli- 

 rostris being found within the tropics. They are consequently wanting 

 both in the Indo-African Tropical — they do not at all breed in Africa — 

 and in the American Tropical Eegion, only one species being met with 

 in the South American Temperate and one in the Australian Eegion. 

 The remaining seven species occur in the Arctic and the North Temper- 

 ate Regions, the greatest number, viz, five, being found in the Old World, 

 and here they only extend their winter migrations to the two southern 

 provinces, the Mediterranean and the Manchurian, without breeuing 

 there. The two ISTorth American species only breed within the Ameri- 

 can division of the Arctic Region. 



The following table gives a synopsis of their distribution: 

 Table I. 



biU. 



'This term denotes the projecting angle of the loral feathering at the base of the 



