ZOOLOGY, ETC. 245 
Florida, southern Texas, and the lower Colorado valley in western Arizona, and 
in southeastern California. 
The boundaries of these zones have not yet been fully determined, so that any 
attempt to apply them to the various species in describing their geographical dis- 
tribution must as yet appear crude; but the advantages of recognizing a general 
system like the one proposed are so great, that I could not refrain from partially 
using it. 
1. 1. Achmophorus occidentalis (Lawr.) Western Grebe. Accidental in 
Kansas. A western species, ranging from Lower California and Mexico to the 
British provinces and eastward to the mountains. Breeds throughout its normal 
range. One specimen, a young male, was taken on the Kansas river at Lawrence, 
November 3, 1887, and reported to the Auk of April, 1888, by Prof. F. H. Snow. 
2. 3. Colymbus auritus(Linn.) Horned Grebe. Migratory; rare. Breeds 
in northern United States and British America. Snow, 1872, and all subsequent 
lists. 
3. 4. Colymbus nigricollis californicus (Heerm.) American Eared Grebe. 
Migratory; rare in eastern Kansas; more frequent in the western counties, where 
it may breed. First reported from the state by Professor Snow, in Observer of 
Nature, April, 1874. Snow’s Catalogue, 1875. 
4. 6. Podilymbus podiceps (Linn.) Pied billed Grebe. Chiefly migratory ; 
common. A few breed in the state in suitable localities and favorable seasons. 
Snow, 1872. Found breeding at Emporia, May 26, 1885, by Bennett and Kellogg. 
5. 7. Gavia imber (Gunn). Loon. Migratory; not common. Breeds in 
northern United States and British provinces. Snow, 1872. 
6. dla. Larus argentatus smithsonianus (Coues). American Herring Gull. 
Migratory; rare. Snow, 1873. 
7. 53. Larus californicus (Lawr.) California Gull. Migratory; rare. Goss, 
1883. Taken by him in Reno county, October 20, 1880. 
8. 54. Larus delawarensis (Ord). Ring-billed Gull. Migratory; rather 
common. Snow, 1875. Taken at Lawrence, April, 1873, by N. J. Stephens. 
9. 59. Larus franklinii (Sw. & Rich.) Franklin’s Gull. Migratory; com- 
mono. Coues, 1865, in the Ibis. 
10. 60. darus philadelphia (Ord). Bonaparte’s Gull. Migratory; not com- 
mon. Goss, 1879. Taken April 18, 1879. B. N. O. C., vol. 4, p. 190. Taken 
also at Manhattan, April 7, 1890. 
11. 62. Xema sabinii (Sab.) Sabine’s Gull. An accidental visitant; very 
rare. Snow, 1878. A specimen taken by Peter Long at Humboldt, September 
21, 1876. 
12. 69. Sterna forsteri(Nutt.) Foster’s Tern. A common migrant. May 
breed in the state. Snow, 1872. 
13. 70. Sterna hirundo (Linn.) Common Tern. Migratory; rare. Listed 
by Snow, first and second editions, but eliminated from the third edition. Re- 
ported from Russell county by F. S. Benson in 1874. Forest and Stream, vol. 
2, p. 341. Goss, 1883. 
14. 74. Sterna antillarum (Less.) Least Tern. Summer resident; rare. 
Ranges throughout the greater part of the United States and the southern part 
of the British provinces, breeding in the greater part of its range, but chiefly in 
