RENDAHL, BIRDS FROM THE PEARL ISLANDS. 



39 



in color, than in a series from Loma del Leon, Panama, these 

 differences not being enough to warrant a separation of the 

 island bird by name. Nelson, who examined the series in 

 Bångs' Collection for his Revision of the North American 

 mainland species of Myiarchus (1. c), found the San Migual 

 birds not distinguisable from mainland birds in the same 

 condition of plumage. As to the measurements given by Ridg- 

 WAY they likewise compare favourably with each other, viz.: 



7 cfcT, Panama mainland . . . 



12 cTcT, SanMiguelandPacheca I. 



5 $ 9 ) Panama mainland . . • 



999. San Miguel, Pacheca and 



Saboga 1 



In the present specimen compared with two adult females 

 from Panama viejo, February 2, and Culebra, Panama (coll. 

 Bovallius) the measm-ements are as follows: 



Wing 



I 9, Saboga I. . . 

 1 9 > Panama viejo 

 1 9, Culebra . . . 



91 



91,5 

 88 



Tail Exposed ^^^^^^^ 

 culmen 



91,5 

 92 



88 



20 

 19 



23 



21,5 



23 



These three skins resemble each other entirely as regards 

 color. 



*62. Myiarchus crinitus (Linné). 



Myiarchus crinitus crinitus Thayer and Bångs, Bull. Mus. Comp. Zoöl. XLVL 



1905. 153 (Saboga, April 9 and 13). 

 Myiarchus crinitus Ridgway, Birds North Middle Am. IV. 1907. 613 (Saboga). 



This species was not collected by Dr. Bovallius. 



Win ter range: Migrates through eastern and southern 

 Mexico and Central America to Panama and the Santa Marta 

 Mountains in Colombia. 



Nelson (1. c. pag. 49) records Myiarchus crinitus Sclater 

 as found in San Miguel Island, but according to Thayer and 



