NO. 1116. 



PEOCEEDIKaS OF THE NATIONAL MUSEUM. 



485 



sparsely spotted with brownish dusky; upper part of breast immacu- 

 late, forming a rather distinct broad band or belt, this succeeded by 

 broad lateral patches (nearly or quite meeting on middle of breast) 

 where the feathers are faintly tinged with browuisli gray and marked 

 with large central, more or less U-shaped spots of dusky; sides and 

 Hanks broadly streaked with dusky. Bill black, slightly brownish on 

 basal i»oitioii of lower uumdible; legs and leet brownish black. Length 

 (skin), Kt.AOj wing, 4.U(); tail, 4.48 (middle feathers not grown out); 

 exposed culmen, 1.25; bill to rictus, l.GO; tarsus, 1.5.1; middle toe, 0.90. 



.4r7»/^/e/»a/<.— (No. 1160G4U.S.N.M.; Hood Island, Galapagos, April 

 7, 1S8S.) Similar to the male described above, but sHghtly smaller, bill 

 straigliter, and under parts more tinged with brown, as well as more 

 distinctly spotted across chest. Length (skin), 10; wing, 4.0."); tail, 4; 

 exposed culmen, 1.25; l)ill to rictus, 1.5S; tarsus, 1.40; middle toe, 0.88. 



Four additional adult males agree essentially in coloration with the 

 one described, and measure as follows: Length (skin). 10-10.50; wing, 

 4.00-5.05; tail, 4.40-4.00; exposed culmen, 1.27-1 ..'>5; bill to rictus, 

 1.55-1.05; tarsus, 1.50-1.5;;; middle toe, 0.88-0.0."). 



This fine new species is named after the late Colonel Marshall Mc- 

 Donald, T'nited States Commissioner of Fish and Fisheries. 



The collection of Messrs. Laur and Adams contains one example of 

 this species from Hood Island. 



Measurements of Nesomimux macdonaldi. 



No. 



1160G3 

 110064 

 116065 

 11606() 

 116067 

 149823 

 149H24 

 149825 

 149846 



Collec- 

 1 tiou. 



IT. S. 

 U. S. 

 U.S. 

 U.S. 

 U.S. 



u. s. 



U.S. 



u s. 



U.S. 



Sex and age. 



A<lult ni.Tlo .. 



Adult f.Miiale 



AduU- male . . 



d(. 



do 



do 



do 



Adult 



do 



Hood Island 



-do. 

 -do. 

 -do. 

 do 

 -do. 

 -do. 

 .do. 



Average 



Apr. 7, 1888 . 



.do 

 -do. 

 .do 

 .do , 

 .do 

 do. 

 -do 

 -do 



95 (4.30) 

 50 1(4.00) 

 50) (4. 08) 



1.85 

 . 32) 

 L50 



4.50 

 (4.12) 



(4.28) 

 (4. 00) 

 4.20 



Ex- I 

 jiosed I Tar 



Clll- 8I1S. 



men. 



1.30 

 1.24 

 1. 25 

 1.28 

 1.22 

 1.28 

 1.23 

 1.21 

 1.20 



1.50 

 1.50 

 1.50 

 1.52 

 1.50 

 1.51 

 1.52 

 1.45 

 1.50 



Mid 

 dlo 

 toe. 



0.91 

 0.88 

 0.92 

 0.90 

 0.90 

 0.91 

 0.91 

 0.85 

 0.90 



4. 79 I 4. 19 I 1. 25 1. 50 I 0. 90 



NESOMIMUS ADAMSI, Ridgway. 



(Plate LVI, fig. 2.) 

 Mimus melanolis (part), Gould, Zool. Voy. Beagle, III, Birds, 1841, p. 62 (Cliatliain 



Island). — SuNDEVALL, Proc. Zool. Soc, 1S71, p. 124 (Chatham Islaud). 

 Nesomimus melariotis (part), Ridgway, Proc U. S. Nat. Mils., XIT, 1889, p. 102 



(Chatham Island). 

 Xesomimus adamsi, Kidgway, Proc. U. S. Nat. Mns., XVII (Nov. 15, 1894)'. p. 358 



(Chatham Island, Galapagos Archipelago; collection of Dr. G. Banr). 



Specific characters. — Similar to X. macdonaldi., Ridgway, in color, but 

 very much smaller, and differing in some respects as to coloration. 



Range. — Galapagos Archipelago: Chatham Island (Darwin, Kinberg, 

 Townsend, Baur and Adams). 



' Author's edition of separates. 



