BIRDS OF SOUTHERN VERACRUZ — WETMORE 303 



outer rectrix shows some black and the tips of the white primary 

 coverts are definitely tipped with black. Among the specimens from 

 Puerto Mexico (Coatzacoalcos) there is one female (No. 142601) with 

 the tail of gracilis and the primary coverts of leucopterus, and a sec- 

 ond female (No. 142555) with the center of the white outer rectrix 

 mottled with dusky and the primary coverts two-thirds black and one- 

 third white. Another example of this is found in specimens in the 

 National Museum from San Mateo del Mar, Oaxaca, where the three 

 taken on May 16, 1905, are M. g. gracilis, and a fourth, a male (No. 

 142603) shot May 15, 1905, has the primary coverts white except for 

 dark tips, in this showing a character of polyglottos though other- 

 wise resembling the other three. 



The skins just described all come from the area in which the two 

 species meet ; the peculiar specimens offer characters in such combina- 

 tion that I consider them hybrids rather than intergrades, so that 

 polyglottos and gilvus remain as distinct entities. 



Family TURDIDAE 



TURDUS MIGRATORIUS MIGRATORIUS Linnaeus: Eastern Robin 



Tardus migratorius Linnaeus, Systema naturae, ed. 12, vol. 1, 1766, p. 292 (South 

 Carolina, based on a winter migrant). 



On February 28, 1940, Carriker shot a male in a clump of trees in a 

 large pasture near camp, this being the only bird of the species that 

 we found. It is a typical example of migratorius, a new record for 

 the country. Darker color above and below, white tail spots, and 

 larger bill distinguish it from T. m. phillipsi Bangs. • 



TURDUS ASSIMILIS LEUCAUCHEN Sclater 



Turdus leucauchen P. L. Sctateb, Proc. Zool. Soc. London, 1858 (1859), p. 447 

 (Guatemala). 



Carriker found these thrushes on the higher, forested slopes of 

 Sierra de Tuxtla, taking specimens on Cerro de Tuxtla on April 3 and 

 9 and May 10 and 11 and on Volcan San Martin on April 22 and 23. 

 On Tuxtla they were noted mainly above 1,800 feet, while on San Mar- 

 tin they were found between El Tular and 4,000 feet elevation. 



The seven specimens include five males and two females, the latter 

 being distinctly browner above than the other sex. The birds agree 

 fairly well with a series of old trade skins from Guatemala, allowing 

 for discoloration due to age, and are distinctly different from typical 

 assimilis of a little farther north in Veracruz. It is of interest to note 

 that this is another species from the Tuxtla range that shows affinity 

 with the mountain areas of Chiapas and other regions to the south, 

 rather than with Orizaba and the other mountains of west-central 

 Veracruz. 



