FAMILY CRACIDAE 307 



point. In our collections also there is one from Tierra Alta, and 

 another from Nazaret to the west of the Sinu, both of which in head 

 color are typical garrula. All specimens in the considerable series that 

 I have seen are clearly gray or brown on the head and neck with no 

 appearance of intergradation. The single gray-headed specimen re- 

 corded from Tierra Alta may indicate that the two are found together. 

 After a review of the information available it seems desirable to 

 regard the complex as a superspecies, with two closely allied species. 

 The northern one found in Panama will be called Ortalis cinereiceps. 

 Four slightly differentiated races may be recognized in cinereiceps 

 of which three are found in Panama. The distinctions are in varia- 

 tion in depth of color. Size seems variable regardless of area, the 

 individual differences in dimension commonly noted apparently being 

 due to age. The three forms of the Isthmus are treated in detail 

 beyond. The fourth, Ortalis cinereiceps chocoeiisis described by de 

 Schauensee (cit supr,, p. 2), from the Rio Jurado, Choco, in extreme 

 northwestern Colombia, is a very dark race, that resembles frantzii 

 of the Caribbean slope of southern Central America, but has the 

 foreneck grayer, less olive-brown, and the gray of the head paler and 

 not extended as far down on the hindneck. The tail tip also is 

 paler. It is probable that this form will be found in southeastern 

 Darien as it is known in Colombia near the boundary, on the Rio 

 Jurado, and at Unguia. 



ORTALIS CINEREICEPS CINEREICEPS Gray 



OrtaUd<i cinereiceps G. R. Gray, List Spec. Birds Coll. Brit. Mus., pt. 5, 

 Gallinae, 1867, p. 12. (Isla del Rey, Archipielago de las Perlas, Panama.) 



Ortalis struthopus Bangs, Proc. New England Zool. Club, vol. 2, 1901, p. 61. 

 (Isla del Rey, Archipielago de las Perlas, Panama.) 



Ortalis garrula olivacea Aldrich, Sci. Publ. Cleveland Mus. Nat. Hist, vol. 7, 

 Aug. 31, 1937, p. S3. (Paracote, Veraguas, Panama.) 



Characters. — Palest in general color of the 3 forms found on the 

 Isthmus; compared to the race mira grayer, less brownish, on the 

 lower surface, with the center of the abdomen nearly white; light 

 tips on tail nearly white ; head, on the average paler gray. 



A female taken at Juan Mina January 18, 1961, had the iris wood 

 brown ; bill fuscous-brown, shading to neutral gray at tip ; tarsus 

 and toes plumbeous ; claws fuscous. 



Measurements. — Males (6 specimens from Panama), wing 205- 

 212 (206), tail 221-242 (231), culmen from base 24.2-29.0 (26.7), 

 tarsus 63-74.1 (68.7) mm. 



