634 THE BLACK-CAPPED GKEENLET 



The following year it was described by him iu the Philadelphia 

 Academy's "Proceedings", and an indifferent figure was given 

 soon after in Captain Sitgreaves's Eeport. In 1854, Mr, Cassin 

 published a handsome colored plate, of life size, taken from one 

 of the original specimens. About the same time, and in the 

 same locality, Mr. J. H. Clark, one of the naturalists of the 

 Mexican Boundary Commission, procured another specimen, 

 which was described by Baird in 1858. Our knowledge rested 

 entirely upon these data, supplemented by the brief field-notes 

 which each of the naturalists mentioned communicated to 

 Mr. Cassin, until Col. A. J. Grayson secured at Mazatlan a 

 fourth specimen, probably a female, which Baird and Eidgway 

 noted in the "History of Korth American Birds". This 

 example is interesting, not only as indicating probably some 

 sexual differences in this species, but also as extending the 

 known habitat, hitherto represented by a single locality in 

 Southwestern Texas. We may safely infer that the rare and 

 curious bird will yet be found at intermediate points in New 

 Mexico and Arizona ; meanwhile, we await with interest fur- 

 ther contributions to its life-history. 



