229 
*324a. Cerchneis isabellinus ochracea Cory, Field Venezuela, 
Mus. Pub. Orn. Ser., i., p. 298 (1915). (Merida, Colon, 
[Colon, Tachiva, W. Venez., type in Field Valle, Ohama, 
Mus. | Montana de la 
Venezuelan Kestrel. Sierra, Cutata, 
Margarita I.) ; 
Wing ¢ 178-184, tail 127 mm. ; 2 wing 190- N.E. Colombia, 
196, tail 133 mm. ; gabove darker rufous, Andes region of 
with only a few black spots and bars ; head Colombia.? 
blackish slate with no rufous patch when 
adult ; primaries 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); 2 and 
juv. ¢ isabelline rufous below with dark 
brown streaks and spots; crown with 
more or less rufous. 
324b. Cerchneis isabellinus brevipennis Berl., Curacao, 
J.£.0., 1892, p. 91. [Curacao.] Bonaire, 
Curacao Kestrel. Aruba Is., off 
Venezuela. 
Wing shorter; ¢ av. 165, 2 175 mm.; 
similar to last form but with a greater 
tendency to banding above and to heavy 
black spotting below in less mature birds ; 
ad. g below isabelline rufous unspotted ; 
tail band av. 25 mm. [Barely separable 
form. ] 
1 C. 1. 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 measurement 
of his type of ochvacea; 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. 12. 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. 1. perplexa (t. c., p. 327) 1 am unable to distinguish, dark and 
pale-breasted birds occurring together as I have before pointed out; while C. 7. 
distincta (t. c., p. 297) is most certainly typical isabellinus, the principal character, 
the obsolete bars on inner webs of primaries, being present in Brit. Guiana examples. 
