22 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I50 



around Volcan Baru in western Chiriqui show indication of darker 

 color, but belong with modestus. 



CRYPTURELLUS SOUI POLIOCEPHALTJS (Aldrich) 



Crypturornts soui poliocephalus Aldrich, Sci. Publ. Cleveland Mus. Nat. Hist, 

 vol. 7, Aug. 31, 1937, p. 30. (Paracote, east shore of Montijo Bay, 1 mile 

 south of mouth of Rio Angulo, Veraguas, Panama.) 



Characters. — Compared with modestus, male browner above and 

 more cinnamon-buff below; female decidedly different, being rufes- 

 cent brown on the lower surface. 



Measurements. — Males (17 specimens), wing 116.3-126.7 (121.9), 

 culmen from base 19.5-23.0 (21.3), tarsus 35.3-42.1 (38.3) mm. 



Females (8 specimens), wing 122.8-134.5 (129.7), culmen from 

 base 20.5-24.6 (22.3), tarsus 38.7-43.4 (40.9) mm. 



Resident. Through the Tropical Zone on the Pacific slope, ascend- 

 ing to the lower edge of the Subtropical Zone in the mountains ; from 

 western Veraguas (Sona) to the Canal Zone (Empire), and the 

 Province of Panama, eastward to the lower Rio Bayano (Chico; 

 Chepo; San Antonio), including both slopes of the Azuero Pen- 

 insula, south to the Tonosi Valley. Isla del Rey, in the Archipielago 

 de las Perlas. 



Birds from Azuero Peninsula are slightly grayer on the crown 

 than those from southern Code eastward, but the difference is not 

 sufficient to warrant recognition of two races. The range of 

 poliocephalus thus extends over most of the area included by recent 

 authors under the name panamensis. Those taken by W. W. Brown, 

 Jr., on Isla del Rey in 1900 and 1904 do not differ from birds of 

 the mainland. It seems possible that the species was introduced there, 

 either by Indians or later, as the bird is one that is kept frequently in 

 captivity. 



An egg from the oviduct of a female collected near Chepo, April 

 6, 1949, has the shell fully formed but lacks the full color and gloss 

 of one completely ready to lay. It measures 41.2x30.4 mm., being 

 slightly smaller than the two sets of C.s. panamensis seen. 



CRYPTURELLUS SOUI PANAMENSIS (Carriker) 



Crypturus soui panamensis Carriker, Ann. Carnegie Mus., Aug, (Sept. 7), 1910, 

 p. 379. (Loma del Leon, Panamas Lion Hill, Canal Zone, Panama.) 



Crypturus soui harterti Brabourne and Chubb, Ann. Mag. Hist., ser. 8, 

 vol. 14, Oct. 1914, p. 321. (Vaqueria, Province of Esmeraldas, Ecuador.) 



Characters. — Decidedly darker than C, s. poliocephalus in both sexes 

 (the female being browner on the undersurface than the male) ; 



