316 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



Specimens examined: "Chile" 3 d", i ? ; Valdivia, i d"; Cautin, 

 ic?, 2 9 ; Santiago, id 1 , i 9 ; Straits of Magellan, i 9 . 



Argentina Chilicito, Prov. of Rioja, i d", i 9 ; Rio Chico (Pata- 

 gonia), 2 9 ; Rio Grande do Sul, i d", i $ (not typical, intergrades). 



Remarks: Two specimens from Rio Grande do Sul are apparently 

 intergrades between this form and australis. The male is of large size 

 (wing, 197) and shows a little rufous bordering the white on the tips of 

 some of the rectrices; the inner web of the outer rectrix has the basal 

 half rufous and the terminal half white with black bars; the subterminal 

 black bands on the rest of the rectrices are nearly as narrow as in 

 cinnamomina. All specimens examined from Chile, both male and 

 female (with one exception), show more or less rufous on the crown; 

 some with a small but well defined crown patch and others with merely 

 a trace. The single exception (male), which shows no trace of rufous 

 on the crown, agrees with the others in the extent of the spotting on 

 the under parts and barring on the upper parts. 



Cerchneis sparveria fernandensis Chapman. 



Cerchneis sparverius fernandensis Chap., Bull. Am. Mus. Nat. 

 Hist. N. Y., XXXIV, 1915, p. 379. 



Type locality: Masatierra I., Juan Fernandez Islands (off Chile). 



Characters: Nearest to C. s. cinnamomina, but very different from 

 any South American race. From cinnamomina it differs in being much 

 more deeply colored and the under parts more heavily and extensively 

 marked with black; breast more ochraceous rufous; upper parts much 

 darker, approaching rufous chestnut; ventral region and under tail 

 coverts clear buff; tips of central rectrices largely rufous, the others 

 white with more or less rufous; tail band averaging about 13 mm. ; outer 

 webs of primaries without white spots or with only a trace on the third. 



Wing, 189; tail, 134; tarsus, 33 mm. 



Adult female differs from cinnamomina in its darker upper parts; 

 under parts strongly washed with deep rufous ochraceous and with 

 darker brown markings. 



Wing, 200; tail, 135; tarsus, 36 mm. 



Comparative differences: Readily distinguished from other races 

 by its deeply colored and heavily marked (almost mottled) under parts. 



Specimens examined: Juan Fernandez Islands Masatierra I., 



3*, 3?. 



Cerchneis sparveria australis Ridg. 



Falco gracilis Swains., (not of Lesson) Anim. in Menag., I, 1837, 

 p. 281. 



