130 BiCKNELL on the Carolinian Fauna 



general brownish and deep buffy suffusion, very similar to the color of dead 

 leaves, especially on the breast, and rendering their detection when among 

 the leaves of their favorite haunts very difficult. Does not this adaptation 

 of color to environment in the case of these helpless young appear to be an 

 instance of protective mimicry ? 



Helminthophaga pinus. Blue-winged Yellow Warbler. Com- 

 mon during the summer, and regularly breeding. Arrives after the first 

 week in May (May 2, in 1878), and incubation commences by the last of 

 the month. 



Helminthophaga chrysoptera. Golden-winged Warbler. — 

 Though this species must be of somewhat regular occurrence, I have but 

 one record from the immediate vicinity, a male seen on May 11, 1875. 



Oporornis formosus. Kentucky Warbler. — Have taken but one 

 specimen in the vicinity, an adult male on May 30, 1875. Mr. J. Wal- 

 lace informs me that this species occurs during the breeding-season, at Fort 

 Lee, N. J., and that some years since a nest and five eggs with the female 

 bird was taken at that locality. Has been found breeding at Sing Sing, 

 by Mr. A. K. Fisher, N. Y.* 



Myiodioctes mitratus. Hooded Warbler. — Within the confines of 

 a tract of somewhat elevated though diversified woodland, this species 

 may be seen or heard every day in the early summer after the middle of 

 May, though only on rare occasions has it been noted at other places in 

 the vicinity. In these woods the ground reaches an elevation of (approxi- 

 mately) two hundred and fifty feet, very nearly as high as any land in the 

 vicinity, and here these birds may be found breeding indifferently on the 

 open or wooded summits, or at their base near the low swampy growth 

 bordering the woods. Owing to the encroachment of the Cow Buntings, 

 but a single bird was reared between two nests which I discovered in 

 1875. I have females in my collection representing well the state of plu- 

 mage recently spoken of by Mr. Merriam,t and by Mr. E. A. Mearns,t of 

 Highland Falls. In one of these birds the black, though well defined in 

 the region of the occiput, is scarcely detectible on the throat ; while another, 

 though less definitely marked, represents an almost opposite phase. This 

 bird also breeds abundantly at Fort Lee, N. J., in company with H. ver- 

 mivorus and H. jnnus, and all three also occur at West Farms, N. Y. § 



Stelgidopteryx serripennis. Rough-winged Swallow. — This spe- 

 cies is a regular summer visitor, arriving about the last week in April, 

 and though not uncommon in the spring, but few remain to breed. By 

 the first week in August, however, the species again appears, apparently 



* Am. Nat., Vol. IX, p. 573. 



+ Review of the Birds of Conn., pp. 25, 26. 



t This Bulletin, Vol. Ill, pp. 71, 72. 



§ W. G. Stevens. Forest and Stream, Vol. VI, p. 215. 



