FliOCEEDIXGS OF THE NATIONAL MUSEUM, 541 



olive, the middle and greater wingcoverts margined terminally with 

 brownish buff; sides of head, chin, and throat plain dull black, like 

 pileum; chest and upper breast the same, but feathers margined with 

 light olive-buff, i)roducing a squamate appearance; rest of under parts 

 dull buffy grayish olive, the feathers with more or less of a dusky central 

 area (most distinct on lower breast), the middle of the abdomen plain 

 pale dull buffy. Maxilla brownish black, with a lighter colored sub- 

 terminal space; mandible light yellowish brown, with the tip and an 

 oblique space at the hxteral base, parallel with the basal deflection of 

 the tomium, dusky ; legs and feet black. Bill smaller than in the adult. 

 Length (skin), 5; wing, 2.68; tail, 1.55; culmen, 0.80; gonys, 0.43; 

 basal width of mandible, 0.32; basal depth of bill, 0.40; tarsus, 0.89; 

 middle toe, 0.65. 



Young male. — ISTo. 116128, U.S.N.M.; same locality, etc. Essentially 

 like the immature male described above, but texture of plumage very 

 different, and the dusky coloring more uniform, especially on chin, 

 throat, and chest, where quite unbroken. 



GEOSPIZA BARRINGTONI, Ridgway. 



(Plate LVII, tig. 4.) 



Geospiza harrhtf/foni, Ridgway, Proc. V. S. Nat. Mns.,XVII, No. 1007, Nov. 15, 1894, 

 p. 361 ( Barringtou Island, Galapagos Archipelago ; collectioii of Dr. G. Baur). 



Specific characters. — Similar to G. ahingdoni, Sclater and Salvin, of 

 Abingdon Island, but bill much stouter, with its tip less compressed 

 and less acute. Wing, 2.70-2.80; tail, 1.58-1.62; culmen, 0.79-0.80; 

 tarsus, 0.90 ; middle toe, 0.70. (Type, No. 596, collection of Dr. G. Baur, 

 male adult; Barringtou Island, July 9, 1891.) 



Range. — Galapagos Archipelago: Barringtou Island (Baur and 

 Adams). 



Dr. Baur's collection contains three specimens of this form, two 

 adult males and one in the streaked plumage. 



I regret being unable to give a more detailed description of this 

 form. 



GEOGPIZA BREVIROSTRIS, Ridgway. 



(Plate LVII, fig. 6.) 



Cactornis brevirostris, Ridgway, Proc. U. S. Nat. Mus., XII, No. 767, Feb. 5, 1890, 

 p. 108, tig. 1 (Chatham Island, Galapagos Archipelago; collection U. S. Nat. 



Mns.). 



Specific characters. — SimOar to G. harringtoni, Ridgway, of Barring- 

 ton Island, but tail longer, bill much shorter and stouter, and tarsi 

 shorter. Wing, 2.70-2.80; tail, 1.65-1.85; culmen, 0.70-0.72; basal width 

 of mandible, 0.37; basal depth of bill, 0.42-0.45; tarsus, 0.82-0.87, 



Range. — Galapagos Archipelago: Charles Island {Albatross-^ f Inde-, 

 fatigable Island; Habel). 



