321 



Subspecific characters. — Similar to C. I. mesorhynchus Cabanis and Heine, 

 but posterior iinderparts barred, giving a squamate appearance; pale under- 

 side of wings pale yellowish white instead of buffy. 



This form differs from scapularis in having a well developed white subocular 

 stripe, pale yellow instead of buff underwing basal surface, dark (instead of 

 white) bill and slightly larger size. From C. I. leucopterylus it differs chiefly 

 in pale yellowish white (instead of buff) underwing lining; dark (instead of 

 white) bill and much smaller size. From C. I. similis it differs in the same 

 respects as it does from leucopterylus j but is nearly the same size. From C. I. 

 lineatus it differs in being more heavily streaked with black on the throat, in 

 having the posterior underparts more broadly barred with black, with pale 

 ground color more washed with buff and in being smaller. Nuperus differs from 

 improcerus in being much more broadly barred and more buffy on the posterior 

 underparts and being a deeper shade of yellowish white on the undersurface 

 of the wings. It may be distinguished at a glance from C. I. fuscipennis by 

 reason of the blackish shade of the plumage and black shafts on the wing and 

 tail feathers, fuscipennis having the plumage washed with brownish, the 

 shafts of the quills being distinctly brown. Nuperus requires no comparison 

 with the very different C. erythrops which is specifically distinct and which 

 lacks the w^hite scapular bar. Of the other two species in the genus, schulzi and 

 galeatus, the former is entirely black below, and the latter has- an unstreaked 

 buff throat, completely barred underparts, and buff (instead of black) back, 

 rump, and upper tail coverts. 



Measwremen^s.— 10 males, wing 172-183 (177) mm.; bill 35-40.5 (38.6) mm. 

 2 females, wing 182-184 (183) mm.; bill 38.5-39 (38.75) mm. 



Range. — Panama from the Canal Zone southward, Colombia 

 west of the eastern Andes; the Santa Marta region. 



Specimens examined. — Panama: Canal Zone, 3 males, 1 

 female; Darien, 2 males. Colombia: Rio Cauca, Guabinas, 1 

 male; Santa Marta Region, 4 males, 1 female. 



Ceophloeus lineatus lineatus (Linne). 



Piciis lineatus Linne, Syst. Nat. ed. 12, 1, 1766, p. 174 (Cay- 

 enne). 



Subspecific characters. — Similar to C. I. nuperus but throat 

 less heavily streaked, as a rule the white, greatly predominating; 

 ground color of posterior underparts white, washed with yellowish 

 buff; the bars broad, well defined and black with no trace of 

 brown ; base of lower mandible usually pale bluish horn. Size large. 

 9 males, wing 177-200 (189.8) mm.; bill 38-45 (41.9) mm. 5 

 females, wing 185-197 (188.8) mm.; bill 35-38 (37.1) mm. 



Specimens examined. — Colombia: Villavicenio, 1 male. Vene- 

 zuela: Trinidad, 1 male. Surinam: vicinity of Paramaribo, 6 

 males, 4 females. Peru: Perico, 1 male, 1 female. 



