l6o 'Nklson, JVoiles ou Mexican Birds. \ hv^\ 



coast of Mexico from Yucatan to the Isthmus. Specimens from the 

 vicinity of Coatzacoalcos, Vera Cruz, are intermediate between gracilis 

 and lawrencei. From the foregoing it becomes evident that M. lawrencei 

 is merely a geographical race of M. gracilis. 



Heleodytes gularis (Scl.). — The collection made by us during 1897 

 contains several specimens of this bird from the mountains of southern 

 Sinaloa and the western slope of the Nayarit Mts. in the Territory of 

 Tepic. The surmise of the authors of ' Biologia,' based on the make up 

 of the skin, that the type came from Floresi probably gives the true 

 source of this specimen. Floresi lived for years at Bolafios, Jalisco, on 

 the eastern side of the Nayarit range, whence he obtained various species 

 of birds, and Bolanos is, no doubt, the type locality of the present species. 



On comparing the type of ray Heleodytes occidentalis with the specimens 

 taken in Sinaloa and Tepic I find that it is the same bird and must stand 

 as a synonym of //. gularis. As the type of H. occidentalis came from 

 the Sierra Nevada de Colima, Jalisco, and Salvin and Godman have 

 recorded the capture of H. gularis in the mountains of Sonoi-a it gives 

 this species a wide range in northwestern Mexico. 



Catherpes mexicanus albifrons (Gz>.). Certhia albifrons Giraud, 

 Sixteen Sp. Tex. Bds. t. 18, 1841. 



The Canon Wrens of the lower Rio Grande Valley and northeastern 

 Mexico are readily separable from typical C. mexicanus which occupies 

 the Mexican tableland. As Giraud's Certhia albifrons was presumably 

 from the southern part of Texas his name becomes applicable to distin- 

 guish the bird of this region subspecifically from typical tnexica7ius. C. 

 mexicanus albifro?is is found along the lower Rio Grande, in Texas, and 

 in the States of Nuevo Leon and Tamaulipas, Mexico. Thence south- 

 ward over the tableland, to the Isthmus of Tehuantepec, typical mexi- 

 carius is the resident form. 



Parus sclateri Kleins. (J. f. O. XLV, 133 (in text) 1S97). — The spe- 

 cific term meridionalis being preoccupied for an Old World species, as 

 noted bv Kleinschmidt (loc. cit.) the latter author proposes the name 

 sclateri to replace it for the Mexican Chickadee. 



Regulus satrapa oblivaceus Bd. Regulus satrafa aztecus Ridg. (ex 

 Lawr. Mss.) Man. Bds. N. Am. p. 613 (appendix) 1887. 



An examination of the material at hand proves that Mr. Lawrence's 

 ' R. s. aztecus^ was based on a winter specimen of R. s. olivaceus. 



Polioptila ccerulea mexicana (Bp.). Little Blue.Gray Gnatcatcher. 

 Culicivora mexicana Bp. Consp. Av. I, p. 315 (1850). 



In 1850 Bonaparte named a Gnatcatcher from Mexico which he de- 

 scribed as being similar to ccerulea but smaller. This name has been 

 treated as a synonym of the latter species by all recent writers. Our work 

 in the lowlands of Vera Cruz, during the spring of 1894, revealed the 

 presence of a small resident race of P. ccerulea which is undoubtedly 

 Bonaparte's bird and worthy of recognition with subspecific rank. 



