608 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



tion distinctly elevated and arched, nasal fossiB much larger, and 

 maxillary tomium more distinctly lobed or convex in middle portion. 

 Female much darker than in an}- allied forms. 



Admit TOfflfe.— Entirely uniform deep black, the feathers abruptly 

 clear slate-gray beneath the surface; bill wholly deep black; legs and 

 feet brownish black; length (skin), 115.57; wing, 61.72; tail, 38.10; 

 culmen, 14.73; gonys, 7.87; basal width of mandible, 7. 11 ; basal depth 

 of bill, 9.40; tarsus, 20.32; middle toe, 13.46.' 



Adult {'i) female.— KhoYQ dull grayish dusky (inclining to grayish 

 or olivaceous black on head and neck), feathers margined with olivace- 

 ous; beneath dusky slate, nearly uniform anteriorly, but feathers 

 everywhere margined with light buffj' olive, most broadly on under 

 parts of the body, especially posteriorly, where nearly uniform on 

 belly and flanks; under tail-coverts light brownish bufl'y, tinged with 

 olive, each with a central longitudinal spot of dusky; bill, legs, and 

 feet brownish black; length (skin), 120.65; wing, 59.69; tail, 36.83; 

 culmen (tip of maxilla broken); gonys, 7.37; basal widthiof mandible, 

 6.10; tarsus, 20.32; middle toe, 13.72.' 



Galapagos Archipelago (Abingdon Island). 



Geospiza deniirostris (not of Gould) Sclater and Salvin, Proc. Zool. Soc. Lond., 

 187D, 323 (Abingdon I.).— Salvin, Trans. Zool. Soc. Lond., ix, pt. ix, 1876, 

 483 (Abingdon I.). 



(? ?) Geospiza fortis (not of Gould) Salvin, Proc. Zool. Soc. Lond., 1883, 421, 

 part (Charles I.). 



Geospiza difficUis Sharpe, Cat. Birds Brit. Mus., xii, 1888, 12 (Abingdon I., 

 Galapagos Archipelago; collection Brit. Mus.; "Charles I.").' — Ridgway, 

 Proc. V. S. Nat. Mus., xii, 1890, 107 (Abingdon I.); xix, 1897, 532, pi. 57, 

 fig. 20 (monogr.). — Rothschild and Haktert, Novit. Zool., vi, 1899, 163, 

 pi. 6, fig. 33 (Abingdon I.; crit.). 



GEOSPIZA DEBILIROSTRIS Ridgway. 

 WEAK-BILLED GROUITD FINOH. 



Similar to G. fortis in size, but feet larger and stouter and bill 

 conspicuously smaller. 



Adult male. — Entirely uniform deep black (less intense posteriorly), 

 the feathers abruptly clear slate-graj^ beneath the surface; lower part 

 of abdomen intermixed with buffy whitish, and longer under tail- 

 coverts broadly margined terminally with the same, tinged with light 

 rusty; bill wholly deep black; legs and feet brownish black; length 

 (skin), 124.46; wing, 74.42; tail, 43.18; culmen, 15.24; gonys, 7.62; 



'No. 116117, U. S. Xat. Mus., Abingdon Island, April 16, 1888, C. H. Townsend. 

 Messrs. Rothschild and Hartert give measurements of a series as follows: Wing 

 63.00-64.00; culmen, 14.00-14.80. 



2 No. 116118, U. S. Nat. Mus., Abingdon Island, April 16, 1888, C. H. Townsend. 



' 1 doubt the correctness of the identification, or the locality, of the Charles Island 

 specimen collected by C'aptain Markham, as do also Messrs. Rothschild and Hartert. 



