422 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



The race panamcnsis found through eastern Panama and across 

 northern Colombia differs from the nominate form only in slightly 

 larger average size. Measurements of a small series of P. I. lictor 

 are as follows: Males (10 from Venezuela and Brazil), wing 89.5- 

 93.5 (90.8), tail 67.5-74.8 (71.9), culmen from base 22.5-25.1 (23.8), 

 tarsus 19.0-21.6 (19.9) mm. Females (10 from Venezuela and 

 Brazil), wing 81.4-87.4 (84.6), tail 64.7-71.0 (68.1), culmen from 

 base 22.1-25.2 (23.7), tarsus 18.1-19.0 (18.4) mm. 



Assignment of lictor to the genus Pitangns follows current usage. 

 Actually while the species in question is like P. sulphuratus in colors 

 and pattern of markings, it differs decidedly in its calls, manner of 

 life, and nesting. In addition, details of form in the palatal region 

 of the skull also differ widely in the two. It is in fact a separate 

 entity as suggested by Haverschmidt (cit. svipra, p. 241). A de- 

 tailed study in life should assist in clarifying the status of the two 

 in relation to one another, probably with lictor placed in a separate 

 genus. 



MYIARCHUS CRINITUS (Linnaeus): Great Crested 

 Flycatcher, Cabezota de Paso 



Figure 38 



Medium size ; upper surface grayish and brownish olive ; lower 

 breast and abdomen yellow ; under side of tail cinnamon-rufous. 



Description. — Length 185-200 mm. Adult (sexes alike), above 

 olive to somewhat greenish olive, with the crown feathers browner, 

 and darker on the centers ; tail with middle pair of rectrices and 

 outer webs of others brownish olive, in the outer two or three this 

 color extended as a narrow line along the inner side of the shaft ; the 

 inner webs on the outer pairs cinnamon-rufous ; wings dusky brown ; 

 middle and greater coverts and the secondaries tipped and edged with 

 brownish white to dull white or yellowish white ; central area of basal 

 half or more of primaries edged externally with cinnamon-rufous ; 

 sides of head gray ; auricular area olive ; chin to upper breast gray, 

 with the throat in some lined indistinctly with dull white ; sides of 

 upper breast and neck yellowish olive ; lower breast, abdomen and 

 under tail coverts light yellow ; axillars and under wing coverts paler 

 yellow ; inner webs of wing feathers edged with pale cinnamon- 

 rufous. 



Juvenile, like adult, but upper tail coverts and outer webs of tail 

 feathers edged with rufous; cinnamon-rufous edgings of primaries 

 broader, with this color tipping the light edgings of the wing coverts. 



