330 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 03 



Colburn. These seem to constitute the first published records for this 

 area and mark an extension of the known range. The two specimens, 

 both females, appear very slightly paler yellow below than the few 

 skins I have seen from Yucatan. 



CHLOROSPINGUS OPHTHALMICUS OPHTHALMICUS (Du Bus) 



Arremon ophthalmicus Du Bus, Bull. Acad. Roy. Sci. Belgique, vol. 14, 1847, p. 

 106 (Mexico). 



Carriker found this species in fair number on Volcan San Martin, 

 where he took four specimens at above 3,500 feet elevation on April 

 18, 20, and 22. Apparently in the colder period it may wander to the 

 lowlands, as he shot one near our camp at Tres Zapotes on January 17. 



Family FRINGILLIDAE 



SALTATOR ATRICEPS SUFFUSCUS Wetmore 



Sdltator atriceps suffuscus Wetmore, Proc. Biol. Soc. Washington, vol. 55 v Aug. 

 13, 1942, p. 106 (Tres Zapotes, Veracruz, Mexico). 



This is one of the common resident species around Tres Zapotes that 

 is recorded almost daily. Strangely enough, the birds of this region 

 differ from others of the species throughout its extensive range from 

 Tamaulipas to Panama in having the throat deep brown, a mark so 

 prominent as to be readily evident in life. I noted this in 1939, and 

 the following season Mr. Carriker devoted definite attention to the 

 matter with the result that we assembled an excellent series, which 

 demonstrates that a well-marked form is concerned. 



The peculiarity of the brown throat has been noted rather casually 

 in a few specimens by other authors but for various reasons has been 

 considered an individual variation. P. L. Sclater 75 described atriceps 

 as having "a large white (sometimes dark chestnut) guttural patch," 

 remarking further that the "throat-spot, clear white in most speci- 

 mens, is dark chestnut in some Mexican examples, and in others tinged 

 with rufous." Salvin and Godman 76 wrote that "a rarer form of 

 variation is in the color of the throat, which in some specimens, usually 

 Mexican, is of a rich chestnut instead of white; but intermediate forms 

 occur connecting the two." Ridgway 77 noted of atriceps that "this 

 white throat patch is sometimes tinged with tawny or chestnut, and 

 according to Dr. Sclater is even occasionally dark chestnut." I have 

 seen no other statements on this subject. 



The color of the throat is easily seen in these birds in life as remarked 

 above, and the brown color is characteristic in the Tres Zapotes area. 

 In our 24 skins from this point there is one male (No. 360403) with the 



M Catalogue of the birds in the British Museum, vol. 11, 1886, pp. 283-284. 

 m Biologia Centrali-Americana, Aves, vol. 1, Feb. 1884, pp. 326-327. 

 « U. S. Nat. Mus. Bull. 50, pt. 1, 1901, p. 661. 



