S. F. Baird on North American Birds. 79 
ing scheme of the arrangement of “regions” as best illustrating 
their relationship. — 
“ Patzogran on Orp Wortp Creation. Neocrean on New Woritp 
I CREATION. 
Palearctic or ire 
North Old World Nearctic or 
North American 
Region, 
II. III IV 
SEEN? : vi. 
| Western | | Middle | | Eastern ‘ 
Paleotropical | .. | Palseotropical | .. | Palaotropical Neotropical or | 
or Ethiopian or Indian or Australian South American | 
i Region, Region. Region. H 
with Mr. Wallace’s corrections embrace the following countries, 
Sahara, and all continental Asia north of about the parallel 
of 30° N. lat. including the whole mountainous country and 
plateaus of Central Asia, as well as Japan and the Kuriles. The 
Aleutians, assigned by Dr. Sclater to this region, appear to belong 
IL. Ethiopian Region.—This embraces all of Africa south of 
the Sahara, and on the eastern side all south of about 30° N. 
lat, as well as most of Arabia, except the portion along the 
ndian ocean and the Persian gulf. It includes also Madagascar, 
and the adjacent islands as Mauritius, Bourbon, etc. The Sahara 
r. Wallace considers as belonging to neither the Palzearctic nor 
the African region, but to occupy the position of a sea, and to be 
cya destitute of land species. 
Ul. The Indian Region.—This includes the low lands of 
continental Asia, about south of 30° N. lat. and the portion of 
Arabia excluded from the Ethiopian region, as well as Ceylon, 
Sumatra, J ava, Borneo, and the Philippines. It is the country 
washed by the Arabian Sea, the Persian Gulf and the China 
48, and its southeastern limit passes between the islands of 
Bali and Lombok, between Borneo and Celebes, and between the 
_ Philippines and the Moluccas. : 
iV. The Austrahan Region.—This includes Australia, New 
emote is 
- fom each other than those just contrasted. The explanation of = 
