BIRDS OF NORTH AND MIDDLE AMERICA. 569 



depth of bill at base (one specimen), 7.3Y; tarsus, 13. 97-14. 99 (14.48); 

 middle toe, 11.43-12.19 (11.94).^ 



Adult female.— luength (skins), 91.44-9.3.47 (92.46); wing, 49..53- 

 62.07 (50.80); tail, 38.35-38.61; exposed culmen, 7.87-8.38 (S.13); tar- 

 sus, 13.72-14.73 (14.22); middle toe, 10.92-11.18." 



Southern Mexico, in States of Oaxaca (Tehuantepec City) and Chia- 

 pas (Tonala); Gruatemala (Retalhuleu) ; Nicaragua (Managua). 



Spermophila parva Lawrence. Am.N. Y. Acad. Sci., ii, May 28, 188.3,382 (Tehuan- 

 tepec, Oaxaca, s. w. Mexico; U. S. Nat. Mus. ). — Salvin and Godjian, Biol. 

 Centr.-Am., Aves, i, 1885, 357.^ 



Spermophila richardsoni Salvin and Godman, Ibis, sixth ser.,iii, Oct., 1891, 611 

 (Tonala, Chiapas, s. w. Mexico, and Retalhuleu, Guatemala; coU. Salvin 

 and Godman). 



SPOROPHILA GUTTURALIS (Lichtenstein). 

 YELLOW-BELLIED SEEDEATER. 



Adult male. — Head, neck, and upper chest black; rest of under parts 

 primrose yellow or yellowish white, abruptly defined against the black 

 of upper chest, the sides and flanks more or less mottled or otherwise 

 varied with dusky; upper parts (posterior to head, but sometimes 

 including hindneck and nape) plain olive, lighter and more grayish 

 on rump; bill pale yellowish or dull whitish (in dried skins); legs and 

 feet horn color; length (skins), 91.95-110.74 (103.12); wing, 51.56- 

 57.91 (54.36); tail, 41.40-48.26 (44.20); exposed culmen, 8.13-9.14 

 (8.64); depth of bill at base, 7.11-7.87(7.37); tarsus, 13.21-15.24(14.22); 

 middle toe, 9.14-10.92 (10.16).* 



Adult female. — Above plain, rather light, olive; beneath rather light 

 brownish buffy, paler and more yellowish on abdomen, browner on 

 sides and flanks, the throat sometimes more or less dusky; bill dusky; 

 length (skins), 91.95-114.55 (99.06); wing, 51.31-58.93^ (54.10); tail, 

 40.89^5.72 (42.67); exposed culmen, 8.64-9.14 (8.89); depth of bill 



1 Three specimens. 



^ Two specimens. 



'Examination of additional material has convinced me that I led Messrs. Salvin 

 and Godman into error by informing them (see Ibis, 1891, p. Ill) that the type of 

 S. parva was certainly a different form from the females of that which they subse- 

 quently named S. richardsoni. I have not been able to examine the latter in the 

 present connection, and there is thus still a possibility that they may really not be 

 females of the present bird, in which case my opinion, as expressed to them, would 

 be correct; but I have carefully compared the type of /S'. parva with specimens which 

 are unquestionably females of S. richardsoni from Mexico, and find it to be without 

 doubt the same form. 



*Thirty specimens. 



