22 ARKIV FÖR ZOOLOGI. BAND 13. N:0 4. 



Fam. Cracidae. 

 21. Ortalis cinereiceps (Gray). 



Ortalis cinereiceps Bångs, Auk. XVIII, 1901, 25 (San Miguel; Pedro Gon- 

 zalez) — Thayer and Bångs, Bull. Mus. Comp. Zoöl. XLVI, 1905, 145 

 (San Miguel; crit, of O. struthopus). 



Ortalis struthopus Bångs, Proc. New. Engl. Zoöl. Club V, 1901, 61 (no v. sp., 

 based on the two specimens before recorded by Bångs in Auk. 1. c. ) — 

 Salvin and Godman, Biol. Centr.-Am. Aves III, 1903, 283 (ref.). 



BovALLius' Collection: 1 ?, San Miguel, April 30. 



The first specimens of the Gray-headecl Guan collected 

 in the Peapl Islands were brought by Mr. Brown from San 

 Miguel and Pedro Gonzalez Islands and described by Mr. 

 Bångs. There were only two specimens, marked by the col- 

 lector as male and female. They were first identified by Mr. 

 Bångs as O. cinereiceps, but then he found them differing 

 from this species especially by having tarsus and foot shorter, 

 on account of which he referred them to a separate insular 

 species, that he named O. struthopus. On his second trip to the 

 Islands Mr. Brown, however, collected further seven adults, 

 both sexes, of the Gray-headed Guan and this series showed 

 that the birds from the Pearl Islands are in no way different 

 from those of the mainland and must be referred to true O. 

 cinereicep)s. 



Fam. Rallidae. 

 22. Aramides cajanea (Muller). 



Aramides cajanea chiricote Thayer and Bångs, Bull. Mus. Comp. Zoöl. XLVI, 

 1905, 145 (San Miguel). 



BovALLius' Collection: 1 $, Viveros, April 4. 



In Cat. Birds Brit. Mus. XXIII, 1894, p. 58 Mr. R. Bowd- 

 LER Sharpe ref ers the Panaman specimens to A. chiricote 

 ViEiLL., a subspecies occurring in «Brazil, through Amazonia 

 to Central Peru and northward to New Granada and Panama », 

 while he gives the distribution of true A. cajanea Mull. as 

 « Colombia and British Guiana to Northern Brazil». A. chiri- 

 cote he characterizes as « similar to A. cayanea, but differing 

 in the brown or rufous brown on the hinder part of the crown 

 and nape, which separates the grey forehead from the grey of 

 the hind neck; there is also a little brown shade on the ear- 

 coverts». The indicating of the Panaman form as A. chiricote 



