150 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Ceophloeus lineatus Hargitt, Cat. Birds Brit. Mus., xviii, 1890, 508, part (Santa 

 F6 de Veragua and Chepo, Panama). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, ii, 1895, 451, excl. syn. part (Santa Fe de Veragua, Chiriqui, Lion 

 Hill, and Chepo, Panama). — Bangs, Proc. New Engl. Zool. Club, ii, 1900, 19 

 Loma del Leon, Panama) ; Auk, xxiv, 1907, 293 (Boruca, Pozo del Rio Grande, 

 and Barranca de Punta Arenas, w. Costa Rica). 



Ceophloeus lineatus lineatus Carriker, Ann. Carnegie Mus., vi, 1910, 592 (low- 

 lands of s. w. Costa Rica; crit.). 



Dryocopus fuscipennis (not of Sclater, 1860) Sclater and Salvin, Proc. Zool. Soc. 

 Lond., 1864, 366 (crit.). 



CEOPHLCEUS LINEATUS SIMILIS (Lesson). 



WHITE-BILLED PILEATED WOODPECKER. 



Similar to C. I. mesorfiynchus, but bill pale horn color or dull yel- 

 lowish white, and average measurements slightly smaller. 



Adult maZe.— Length (skins), 264-350 (313); wing, 166-192.5 

 (179.7); tail, 103-127 (113.9); culmen, 34-39 (36.3); tarsus, 24-29 

 (26.7); outer anterior toe, 22.5-26 (24.4).« 



Adult female.— Length, (skins), 270-325 (315); wing, 161-186 

 (176.6); tail, 102-125 (110.6); culmen, 32.5-37 (35.1); tarsus, 

 25-27.5 (26.1); outer anterior toe, 22-25.5 (24).^ 



« Twenty-nine specimens. 



^ Twenty-seven specimens. 



Notwithstanding tlie larger average size of specimens from Vera Cruz and Tamauli- 

 pas, I am not disposed to separate them, there being no color differences that I am 

 able to discern. 



Of the five Costa Rican specimens examined all are clearly intermediates between 

 this form and C. I. mesorhynchus, and would be referable to the latter except for the 

 paler bill. It was possibly on a specimen of this character that Cabanis and Heine 

 based their supposed species. 



