48 
BIRDS OF COLORADO. 
scalaris bairdi, by I^owe ; larus calif ornicus, larus occidentalis ^ larus 
franklinii^ eretmetes occidenialis and cegialitis semipalniata^ by 
Osburn; chat hyperborea nivalis and megascops asio^ by Snyder; 
colymbus aurittis, melospiza fasciata and dendroica (Estiva sonorana^, 
by Thorne. 
RECAPITULATION. 
Date 
AUTHORITY. 
Number of 
Species added 
Total number 
of Species 
to date 
1821. _ 
Thos. Say 
II 
II 
1858.. 
S. F. Baird 
19 
30 
1859.. 
S. F. Baird.. .. 
4 
34 
1870.. 
S. F. Baird 
I 
35 
1872.. 
J. A. Allen 
84 
119 
1872. _ 
C. E. Aiken 
59 
178 
1873-- 
C. E. Aiken 
I 
179 
1873- 
R. Ridgway . . _ 
i 60 
239 
1874.. 
R. Ridgway. .. 
I 
240 
1874-- 
E. Cones .. 
3 
243 
1874-- 
Baird, Brewer and Ridgway. 
I 
244 
1876.. 
H. W. Henshaw 
14 
258 
1877- 
R. Ridgway 
21 
279 
1877.. 
E. Cones 
2 
281 
1880 
H. D. Minott 
2 
' 283 
1881.. 
F. M. Drew 
6 
289 
188^.. 
Wm. Brewster 
I 
290 
1883-- 
Allen and Brewster . 
I 
291 
1884.. 
R. Ridgway 
I 
292 
1885-- 
F. M. Drew 
4 
296 
1885- 
C. W. Beckham 
2 
298 
1886. _ 
H. G. Smith 
5 
303 
1887.. 
C. W. Beckham __ 
2 
305 
1887.. 
P. M. Thorne 
3 
308 
1887.. 
F. M. Dille 
I 
309 
1887.. 
R. Ridgway — . . 
I 
310 
1888.. 
C. F. Morrison . 
I 
311 
1888.. 
C. F. Morrison... 
5 
316 
1888.. 
P. M. Thorne 
I 
317 
1889.. 
P. M. Thorne 
2 
319 
1890.. 
V. L. Kellogg 
I 
320 
1891. _ 
Wm. Brewster _ 
I 
221 
1893-- 
R. C. McGregor 
I 
322 
1893-- 
Wm. Osbnrn 
2 
324 
1894.. 
W. W. Cooke 
4 
328 
1894.. 
W. P. Lowe — - 
I 
329 
1895-- 
R. Deane 
I 
330 
1895-- 
W. P. Lowe 
I 
331 
1895-- 
W. P. Lowe 
I 
332 
1896.. 
C. Bendire. 
3 
335 
1896.. 
H. G. Smith 
9 
344 
1897.. 
W. W. Cooke 
19 
363 
