1893-] Allen on Mexican Mammals and Birds. 35 



47. Campephilus imperialis (Gould). Seven specimens, 

 taken as follows: Chuhuichupa, Jan. 25-29, 1892; Bavispee River, 

 Dec. 24, '890; Rancheria de los Apaches, Jan. 10, 1891. 

 Dr. Lumholtz informs me that the species is common at the 

 localities last named 



48. Dryobates villosus hyloscopus. El Puerto, Dec. 7; 

 Rancheria de los Apaches, Jan. 14-25. 



49. Dryobates arizonae. Rancheria de los Apaches, Jan. 

 14 and 15. 



50. Dryobates scalaris. Oputo and Bacadehuachy, Sept 

 25~Nov. 29; San Diego, Feb. 24. 



51. Sphyrapicus varius nuchalis. El Pinita and Los 

 Cuevos, Oct. 12-15; El Puerto, Dec. 16; Bavispee River, Dec. 

 30; Rancheria de los Apaches, Jan. 15. One of the El Puerto 

 specimens (No. 56,498, $ ), shows an excessive tendency to 

 erythrism, the usual red throat patch extending posteriorly over 

 the whole breast, where the feathers are merely black at the base 

 and red apically, the usual broad black breast patch being con- 

 cealed by the broad red tips of the feathers. The posterior half 

 of the superciliary and subocular white stripes is also strongly 

 washed with red a feature occasionally developed in specimens 

 from other localities. The El Puerto specimen thus has very 

 much the appearance of a small S. ruber. 



52. Sphyrapicus thyroideus. Female, Bavispee River, 

 Dec. 12; male, Rancheria de los Apaches, Jan. 15. This last 

 example (No. 56,494, $ ad.) also shows an abnormal develop- 

 ment of red on the breast, the usual red gular stripe broadening 

 posteriorly and continuing over the breast, where it occupies the 

 middle third of the pectoral area. The feathers of the whole top 

 of the head are also broadly tipped with bright red. It thus at 

 first sight, through the red crown and extension of the red throat 

 spot over the breast, has the appearance of being a very different 

 species from S. thyroideus. In the absence of other specimens, 

 however, it seems best to treat it as merely an abnormal example 

 of S. thyroideus. 



