V0l .s^ 9 VI ] Nelson, New Birds from Mexico. . 2 7 



patch dark buffy; abdomen dark buffy and feathers on posterior part of 

 flanks and under tail-coverts, bordered with same. 



Dimensions of type. — Wing, no; tail, 96 ; culmen, 11; tarsus, 30. 



Remarks. — Dr. A. K. Fisher has traced Gambel's route and 

 finds that the type of Callipepla ga'mbeli, which is recorded as 

 having been taken November 18, "some distance West [error for 

 East] of California," must have been secured in southern Nevada 

 or immediately adjacent part of eastern California. My compari- 

 sons, establishing the form described above, have been with 

 specimens from the region of the type locality. Birds from 

 southern Arizona also are typical gambeli. 



Aphelocoma sieberi colimae, subsp. nov. 

 Colima Jay. 



Type, No. 156052, $ ad., U. S. Nat. Mus, Biol. Survey Coll. From 

 Jacala, Jalisco, Mexico. Collected March 6, 1897 by E. W. Nelson and 

 E. A. Goldman. 



Distribution. — Pine and oak forests from the Sierra Nevada de Colima 

 north to the Santiago River in Jalisco, western Mexico. 



Subspecijic characters. — Similar to A. sieberi but smaller, with a lighter 

 shade of blue on dorsal surface, graver back and paler lower surface on 

 which there is a dingy brownish wash as in A. couchi. 



Color. — Top and sides of head and neck, with upper surface of wings, 

 rump and tail, azure blue ; chin and throat dingy grayish white with fine 

 black shaft streaks and shading into dingy gray on breast and thence to 

 dingy whitish on abdomen; under tail-coverts dingy whitish with faint 

 gloss of blue. 



Dimensions of type. — Wing, 173 ; tail, 156 ; culmen, 25 ; tarsus, 43. 



Aphelocoma sieberi potosina, subsp. nov. 



San Luis Potosi Jay. 



Type, No. 144642, $ ad., U. S. Nat. Mus., Biol. Survey Coll. Mountains 

 near Jesus Maria, San Luis Potosi, Mexico. Collected by E. W. Nelson, 

 Sept. 3, 1S92. 



Distribution. — Scrubby pine and oak forest on arid mountains of the 

 tableland in northern Queretaro, Guanajuato, San Luis Potosi, eastern 

 Zacatecas, Coahuila and southern border of Nuevo Leon, Mexico. 



Subspecifc characters. — Similar to A- seiberi but smaller, with larger 



