1915.] Chapman, New Colombian Birds. 639 
but in color seem to be nearer fulvescens than to cachinnans, but Mexican 
specimens apparently differ from true cachinnans only in being somewhat 
larger. If this be true we should have the northern part of the range of 
cachinnans separated by the range of fulvescens. Doubtless, as in similar 
cases, a larger amount of material aided by a knowledge of the fact that the 
light forms of cachinnans which inhabit Mexico and South America (except 
the Pacific coast) do not come into actual contact will result in the separa- 
tion of the Mexican bird. 
Specumens examined.— Mexico: Jalisco, 2; Tepic, 1;. Tlacotalpam, 1; 
Honduras, 1; Nicaragua, 2; Panama (Zone), 2; Colombia: Santa Marta, 
4; Honda, 2; Villavicencio, 1; Barrigon, 1; Rio Frio, 1; Alto Bonito, 1; 
San Jose, 2; Barbacoas, 1; Ecuador: Manavi, 2; Puna Island, 1; Vene- 
guela: Delta Orinoco, 1; Surinam, 3. 
Measurements of Females. 
Wing Tail 
Villavicencio, Colombia 287 211. 
Santa Marta, * 283 223 
: . 272 196 
Barbacoas = 250 188 
San Jose 2 260 187 
Panama 269 190 
Jalapa, Nic. 278 210 
Roman River, Honduras 280 228 
La Canas, Jalisco, Mex. 300 231 
La Laga, ‘s “ 303 246 
Amatlan, Tepic i 300 233 
Measurements of Males. 
Wing Tail 
Barrigon, Col. 272 217 
Manavi, Ecuador 268 193 
re ° 256 178 
San Jose, Col. 243) as. 185 
Alto Bonito, Col. 265 195 
Tlacotalpam, Mex. 275 213 
Aulocorhynchus albivitta griseigularis subsp. nov. 
Char. subsp.— Similar to A. a. pheolemus (Gould) but the throat gray with a 
faint bluish tinge instead of deep grayish blue; distinguished from A. a. albivitta by 
the color of its throat, by the greater width, apically, of the blackish stripe on the 
maxilla, and (in skins) by the absence of reddish at the end of this stripe and tip of 
the mandible. es : ! 
Type.— No. 133272, Am. Mus. Nat. Hist., % ad., Santa Elena (alt. 9000 ft.), 
Cen. Andes, Antioquia, Col., Dec. 2, 1914; Miller and Boyle. 
