160 



310a. 



310b. 



barred right across inner webs ; tail with 

 broader black subterminal band (25-30 

 mm.) ; below decided rufous cinnamon, 

 unspotted in ad. (less mature with a few 

 black spots on sides) ; $ and juv. <$ 

 isabelline rufous below with dark brown 

 streaks and spots ; crown with more or 

 less rufous. 



Cerchneis isabellina ochracca Cory, Field 

 Mus. Pub. Orn. Ser., i., p. 298 (1915). 

 {Colon, Tachira, W. Venez., type in Field 

 Mus.] 

 Venezuelan Kestrel. 



Wing shorter ; ^ av. 6.50, $ 6.90 in. ; 

 similar to last form but with a greater 

 tendency to banding above and. to heavy 

 black spotting below in less mature birds ; 

 ad. c? below isabelline rufous unspotted ; 

 tail band av. 25 mm. [Barely separable 

 form.] 



Cerchneis isabellina brevipennis Berl., J.f.O. 

 1892, p. 91. [Curacao.^ 

 Curacao Kestrel. 



Venezuela, 



(Merida, 



Colon, 



Valle, 



Ohama, 



IMontana de 



la Sierra, 



Cutata, 



Margarita 



I.) Tn.e. 



Colombia ; 

 Andes 

 region of 

 Colombia.* 



Curacao, 

 Bonaire, 

 Aruba Is., 

 off 

 Venezuela. 



* C. i. intermedia Cory (Field Mus. N. H. Orn., i., p. 325 (1915), seems to 

 be non-separable. The average wing of his examples is the same as the 

 measvirement of his type of ochracea ; the narrower band on the tail seems 

 scarcely a reliable distinction, while the white spotting on outer webs of 

 primaries is a very variable character. C. i. margaritensis Cory (T. c, p. 297), 

 I am also unable to distinguish, as examples with the paler under parts occur 

 in the Merida district along with the darker birds. His C. i. perplexa (t. c, 

 p. 327) I am unable to distinguish, dark and pale-breasted birds occurring 

 together as I have before po'nted out ; while C. i. distincta (t. c, p. 297) is 

 most certainly typical isabellina, the principal character, the obsolete bars on 

 inner webs of primaries, being present in Brit. Guiana examples. 



