670 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Aduli female.— Length (skins), 167.6i-180.34 (176.02); wing, 82.65- 

 91.19 (86.11); tail, 80.01-83.31 (81.28); exposed culmen, 17.02-19.05 

 (18.03); depth of bill at base, 14.73-15.24 (14.99); tarsus, 23.10-24 13 

 (28.11); middle toe, 16.51-17.53 (17.02.)^ 



Isthmus of Panama, north to Chiriqui (David) and Veragua (Santa 

 Fe; Chitra); San Miguel Island, Gulf of Panama?' 



Saltator striaiipecim (not of Lafresnaye) Lawkence, Ann. Lye. N. Y., vii 1861 

 331 (Lion Hill, Panama R. R.); viii, 1865, 175 (David, Chiriqui). ' 



S'altator isthmicus Sclater, Proc. Zool. Soc. Lond., 1861, 130 (Panama; coll. P. L. 

 Sclater); Cat. Am. Birds, 1862, 97 (do.).— Sclatee and Salvin, Proc. Zool. 

 Soc. Lond., 1864, 351 (Lion Hill).— Salvin, Proc. Zool. Soc. Lond., 1867,141 

 (David, Chiriqui; Santa ¥6, Veragua); 1870, 189 (Chitra, Veragua). 



[Saltator] isthmicus Geay, Hand-list, ii, 1870, 75, no. 7095. 



Saltator albicollis islhmicus Bangs, Proc. New Engl. Zool. Club, ii, Sept. 20, 1900 

 32 (Lion Hill); Auk,,xviii, 1901, 32 (San Miguel I., Bay of Panama)'. ' 



[Saltator} albicollis (not of Vieillot) Sclater and Salvin, Nom. Av. Neotr., 1873, 

 26, part. 



Saltator albicollis Salvin, Proc. Zool. Soc. Lond. , 1883, 421 ( Panama) . — Salvin and 

 GoDMAN, Biol. Centr.-Am., Aves, i, 1883, 330, part (Volcan de Chiriqui 

 and David, Chiriqui; Chitra and Santa F^, Veragua; Panama and Lion Hill, 

 Isth. Panama).- Sclater, Cat. Birds Brit. Mus., xi, 1886, 294 (Santa F6 and 

 Chitra, Veragua; Panama). 



'Six specimens from Isthmus of Panama. 



^A series of fourteen adults from San Miguel Island in the collection of Messrs. E. A. 

 and 0. Bangs, collected April 27 to May 7, shows decided color differences from an equally 

 large aeries from the mainland, the under parts having much legs of the olive-yellowish 

 wash across chest and along sides, and the streaks grayer. The upper parts are also 

 grayer, especially anteriorly. In the absence of specimens of corresponding date 

 from the mainland of the Isthmus (none of the specimens fro© the latter having 

 been obtained later than March 25 ), I am unable to determine whether the differ- 

 ences are seasonal or otherwise. Average measurements of the mainland and island 

 specimens, together with specimens of S. a. albicollis, are as follows: 



