2i8 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



24 specimens of this apparently well-marked form were taken, 

 12 males and 12 females. 



The comparative measurements of the two forms are as follows: 



D. r. obscura, Los Roques. 



12 males; wing, 2.35 to 2.54; tail, 2 to 2.25; bill, .36 to .40. 



D. r. rufopileata from Aruba, Cura$ao, and Bonaire. 



20 females; wing, 2.23 to 2.37; tail, 1.78 to 1.90; bill, .33 to 

 37- 



ORCHILLA ISLAND. 



Orchilla Island is situated about 1 5 miles east of Los Roques and 

 73 miles north of Cape Godera, Venezuela. It is approximately 7^ 

 miles long and about one mile broad. The interior of the island is 

 high and largely barren, consisting of seven hills separated by low 

 valleys. What vegetation there is consists principally of low bushes, 

 together with cacti of several species, and mangroves are found 

 along the shores. Mr. Ferry's stay on Orchilla was limited to three 

 days, January 30 to February i, 1909. In his notes he states that 

 birds were comparatively scarce and confined to few species. Be- 

 sides those recorded below the following species were given as not 

 uncommon: Pelecanus occidentalis , Fregata aquila, and Phcenicopterus 

 ruber. So far as known, no collector had previously visited this 

 island . 



Family Columbidre. 



Chaemepelia passerina perpallida (Hartert). 

 10 specimens, 6 d\ 4 9 ; common. 



Family Miiiotiltidse. 

 Dendroica ruficapilla rufopileata Ridgw. 



7 specimens, 4 d\ 3 9 . 



"Common. Found a nest of this species containing 3 half- 

 fledged young, also a young of the year dangling by a leg in a cobweb." 

 (Ferry.) 



Birds from Orchilla, Blanquilla, Tortuga, Testigos, and probably 

 Margarita differ somewhat from D. r. rufopileata from Caracas and 

 Bonaire, and those from Blanquilla and Tortuga have the wings and 

 tail shorter. The yellow colors are brighter, especially the yellow 

 edgings of the secondaries and tertials, which are also broader. 



