227 
*323b.Cerchneis cinnamominus equatorialisMearns, Ecuador ; 
Auk., 1892, p. 269. [g‘ Guayaquil,” errore N. to West 
=intertor of Ecuador, type No. 101, 309 in Columbia (W. 
coll. U.S. Nat. Mus.] slope of central 
[C. c. cauce Chapm. and C. c. andina and northern 
Cory, synonyms. ]! Andes). 
Andean Kestrel. 
Size similar ; wing ¢ 178-190, tail 133 mm. ; 
2 wing 184-190 mm. ; g head much darker, 
blackish slate; above darker rufous; 
tail band 18-22 mm. (central examples 
widest, northern and southern narrowest) ; 
below much deeper cinnamon; spots on 
sides fewer (except in less mature birds) ; 
2 above (including tail) and below much 
darker cinnamon rufous; wing quills 
washed with rufous on inner webs, black 
bars much narrower and white inter- 
spaces 6 mm. wide; tail bands narrow 
and regular as in C. c. cinnamominus, but 
underside much less white and_ bars 
appearing much narrower, with no black 
terminal band. 
323c. Cerchneis  cinnamominus  fernandensis Juan Fernandez 
Chapm., Bull. Am. Mus. N.H., xxxiv., Islands, 
off Chile. 
1 I think that the absence of exact locality for Mearns’s type cannot be held 
to disquality his name, as it seems certain the example came from some part of 
Ecuador, and I accept “interior of Ecuador ”’ as a sufficient locality, since I am 
unable to distinguish four (!) separate races for Ecuador as set forth by Cory (Field . 
Mus. Pub. Orn., Ser. i., pp. 319-23). C. ¢. cauc@ appears to me to be a northern 
extension of this dark form, reducing in size slightly ; C. c. andina appears to rest 
on the largest and darkest birds, with fewest spots on sides, and presumably the 
most mature, judging by the description and by presumed examples I have seen. 
His C. c. peruviana, being the paler southern examples, is in my opinion untenable, 
as most Peruvian birds can be referred either to cinnamominus or australis. There 
are only two groups of forms in South America, the larger cinnamominus and the 
smaller isabellinus. If a bird is of fair size and has spotted sides when quite adult 
it must belong to the former, and if small, with unspotted sides when adult, it must 
belong to the latter. To treat both as forms of sparverius, as Cory does, is confusing. 
It cannot be too strongly emphasised that the spotting in the tsabellinus group 
is immaturity; in cinnamominus it remains in the adult, but must vary as we 
get away from the typical race. Andina, by its size, appears to belong to the 
cinnamominus group, and according to Cory’s description the spots are not entirely 
absent. 
