32 ARKIV FÖR ZOOLOGI. BAND 13. N:0 å. 



Thayer and Bångs say, that the Screech Owl of the 

 Islands is in all probability not a true O. choliba. Lack of ma- 

 terial, however, prevents them from forming any definite opi- 

 nion on this subject. 



RiDGWAY on the contrary states, that as far he is able 

 to see, there is no difference in colour between specimens 

 from Costa Rica and Panama on the one hand, and those from 

 South America on the other, the species being « remarkably 

 uniform throughout this väst extent of territory.» 



Of the single present specimen nothing can of course be 

 decided as such a question requires considerable material 

 before before a final judgment can be pronounced. 



The measurements are: wing 173, tail 96, culmen from 

 cere 11. 



Fam. Caprimulgidae. 

 44. Nyctidromus albicoUis albicollis (Gmelin). 



Nyctidromus albicollis Bångs, Auk. XVIII. 1901. 26 (San Miguel) — Thayer 

 andBANQS, Mus. Comp. Zoöl. XLVI. 1905. 149 (San Miguel). 



Nyctidromus albicollis albicollis Ridgway, Birds North Middle Am. VI. 1914. 

 537 (San Miguel). 



The Cuiiejo was not collected by Dr. Bovallius. 

 Thayer and Bångs state, that the bird of San Miguel 

 does not differ from that of the mainland opposite. 



Fam. Trocliilidae. 

 45. Phaethornis anthophilus hyalinus (Bangs). 



Phaethornis hyalinus Bangs, Auk. XVIII. 1901. 27 (San Miguel; ty pe) — 

 Thayer and Bangs, Bull. Mus. Comp. Zoöl. XLVI. 1905. 149 (San 

 Miguel). 



Phdtthornis anthophilus hyalinus Ridgway, Birds North Middle Am. V. 1911. 

 324 (San Miguel). 



The Island Hermit was not collected by Dr. Bovallius. 



This subspecies is, according to the statements of the 

 above quoted authors similar to Ph. a. anthophilus BouRC. 

 of Venezuela and Colombia, from which it differs by having 

 the green of upper parts deeper and less bronzed, and the 

 feathers of rump and upper tail-coverts less broadly bordered 

 with brownish buffy. The size was in the measured speci- 

 mens found slighthy larger, except in the tail. 



