1016 Report of State Geologist. 



found from April 23 to May 7, and in the northern paxt of the State 

 from April 29 to May 14, and occasionally to May 26. In the fall 

 they first appear northward September 1, and sometimes linger in the 

 southern part of the State until October 10. The earliest and latest 

 dates of first appearance in spring are as follows: Brookville, April 

 23, 1892, May 7, 1885; Richmond, April 26, 1897; Bloomington, April 

 28, 1895, May 9, 1892; Carroll County, May 10, 1884; Lafayette, May 

 14, 1892; Sedan, May 11, 1888; Petersburg, Mich., April 29, 1888, 

 April 30, 1897; Chicago, 111., May 1, 1896, May 23, 1896, May 26, 

 1894. They were last noted in fall at Sedan, September 22, 1889; 

 in Lake County, September 18, 1888; Chicago, 111., September 17, 

 1896; Brookville, Ind., October 5, 1886; Greencastle, October 10, 

 1890. I have no knowledge of its breeding in Indiana. During the 

 migrations, I have found them quiet and shy. They are, however, 

 more active than the Yellow-throated Vireo. I have never heard its 

 song, though it is said to sing during the migrations. Dr. T. M. 

 Brewer says its song is "a prolonged and very peculiar ditty, repeated 

 at frequent intervals, and always identical. It begins with a pleasant 

 warble, of a gradually ascending scale, which at a sudden pitch sud- 

 denly breaks down into a falsetto note. The song then rises again 

 in a single high note and ceases." 



"One specimen of three examined had eaten two caterpillars, one bee- 

 tle and a hymenopterons insect" (King, Geol. of Wis., I., p. 523). The 

 spring of 1897 I took some lice from a specimen of Y. soKtarius and 

 sent them to Prof. Herbert Osbom, Ames, Iowa. He informs me that 

 they are a species of Docophorus, belonging to the communis group. 

 This is the first record he had of it from a. Vireo. 



Subgenus Virko Vieillot. 



*252. (631). Vireo noveboracensis (Gmel.). 



"White-eyed Vireo. 



Adult. — Above, bright olive-green, including crown; rump, 

 brighter; a slight ashy gloss on the cervix; below, white, the sides 

 of the breast and belly, the axillars and crissum, bright yellow; a 

 bright yellow line from nostrils to and around eye; lores, dusky; two 

 broad, yellowish wing bars; inner secondaries widely edged with the 

 same; bill and feet, blackish plumbeous; eyes, white. 



Length, 4.50-5.00; wing, 2.35-2.50;. tail, 1.90-2.10. 



Range. — Eastern North America, from Rocky Mountains, Hon- 

 duras to Minnesota and New England. Breeds throughout its United 

 States range and in the Bermudas. Winters fi-om Florida southward. 



