NEARCTIC REGION. 
33 
escaped notice here. In his prefatory remarks the author ob- 
serves thai^mnge in the breeding-season must form the basis for 
defining th^imits of different ornithological districtf^ He also 
notices that [among migrants of the same species the examples 
which arrive in spring the earliest are bigger and more brightly 
tinted than those which come later, and, conversely, on their re- 
turn the examples last seen are bigger than the summer specimens. 
Hence it would appear that the largest individuals arc those 
which go furthest north in summer, and, he also adds, are those 
which live furthest north in wint^ [but on this point some dif- 
ference of opinion may be expected]. I^ome characteristics of 
the ornithological provinces of North America are next briefly 
mentioned ; and then follow the lists of the species observed, as 
stated in the title. In Iowa about 108 or 1 10 species were seen, 
of which at least 100 breed in the State. For Illinois two lists 
arc given, one of 81< species in Ogle County, the 6thcr of 94 
species in Cook County. At iliehmond 72 species were observed 
by himself and Dr. Haymond. Some critical notes bn sup- 
{Turdid(S, Larid(s) are added in the course of the 
/Allen, J. A. Notes of an ornithological reconnoissance of por- 
tions of Kansas, Colorado, Wyoming, and Utah. Bull. Mus. 
C. Z. hi.* pp. I13-I83. 
The results of the author’s researches confirm the general 
conclusions of his former remarkable paper (Zool. Bee. viii. p. 24), 
and show the existence of jscvcral well-marked geographical races 
not before chronicled. j^Thcre arc three distinct lists of birds 
observed at different localities in Kansas, the first enumerating 
1 21 species, the second 61, and the third 25. In Wyoming 41 
species were seen. For Colorado also three lists are given, the 
first of 81 species, the second of 54, and the third of 36. In 
Utah 137 species were noticed. Finally, a combined list is given, 
containing the 228 species altogether observed. Many useful 
remarks are made throughout the paper, which, like most of Mr. 
Allen’s, has a very general bearing 
, . Ornithological Notes from the West. Am. Nat. 1872, 
pp. 263-280, 343-351, 394-404. 
{ These articles contain a summary of the preceding paper, j 
Burmeister, II. Synopsis of the Lamellirostres of the Argen- 
tine Republic. [See Anseres.”] 
, CouEs, Elliott. Key to North- American Birds, containing a 
^ concise account of every species of living and fossil Bird at 
present known from the continent north of the Mexican 
* The signatures of the sheets are ‘‘ vol. ii.” 
1872. [vol. IX.] 
D 
