30 NORTH AMERICAN WARBLERS. 



April 6, 1881, at Houston, Tex., and April 10, 1899, and April 7, 1900, 

 at New Orleans. At New Orleans the migration of the species is at 

 its height about April 20. In the southern Rio Grande region of 

 Texas the bird has not been noted, although the avian life of the region 

 has been thoroughly investigated; hence if it occurs it must be as a 

 rare migrant. Houston is the southernmost point in Texas from 

 which it has been recorded to date, and Alta Mira is the northernmost 

 point of record in Mexico. Since the species is apparently not com- 

 mon west of Louisiana or north of Vera Cruz, it is probable that the 

 principal line of migration is from Yucatan and the coast immediately 

 west of Yucatan direct!}^ north to the northern coast of the Gulf of 

 Mexico. 



Fall migration. — The worm-eating warbler is not an early fall 

 migrant. It begins to move south in August, and birds from the 

 eastern part of the United States reach southern Florida by the end of 

 August or b}^ early in September. The species has been recorded on 

 August 30 at Key West, and was noted at the Fowey Rocks light, Sep- 

 tember 2, 1889, and at Sombrero Ke}^ light, September 9, 1885. The 

 six years' average of the dates on which the first southbound bird 

 was observed to strike at an}^ of the lighthouses is September 14. 



Cuba is reached about the middle of September; in Jamaica the 

 earliest recorded arrival was on October 7, and at San Jose, Costa Rica, 

 November 23, 1890. To the westward the few dates of fall migration 

 obtained indicate movements on the coast of Mississippi at about the 

 same time as at the same latitude farther east. 



The four years' average of closely agreeing dates of the latest 

 migrants at Raleigh, N. C, was September 2. At New Orleans Sep- 

 tember 30 is the latest date at which the birds have been noted; at 

 Key West, about October 1; at Sombrero Ke}^, September 25; and at 

 Fowey Rocks, October 5. A dela^^ed bird was seen in northern South 

 Carolina, October 6, and one in northern Florida, December 26. 



640. Helmintliopliila 'bachniani (Aud.). Bachman Warbler. 



When ' Bird Migration in the Mississippi Valle}^' was published, the 

 Bachman warbler had just been rediscovered in the United States. 

 The records given in that publication include all specimens taken to 

 the spring of 1888 inclusive. Information regarding the bird then 

 stood as follows: Besides the tj^pe, 39 specimens had been taken at 

 Lake Pontchartrain, Louisiana, in the spring of 1886, March, 1887, 

 and March, 1888; one had been taken at the Sombrero Key light-house; 

 one had been seen at the same point April 24, 1887; and one had been 

 taken by Atkins at Key West August 30, 1887." In addition to these 

 records Gundlach had reported that the Bachman warbler was a winter 



ffScott, Auk, IV, p. 348, 1887. 



