Bulletin - United States National Museum - si-pddr - Smithsonian ...

:
104 BULLETIN 133, UNITED STATES NATIONAL MUSEUM
is representative of an unnamed subspecies. Following is a synopsis
of measurements of specimens in the collections of the United States
National Museum
PALCO F. FUSCO-CAERULESCENS.
Five males (Santiago, Chile; Conchitas, Buenos Aires; Kilometer
182, Formosa; Tapia, Tucuman ; Paraguay) wing, 235-255.5 (245.4)
tail, 148.5-165 (156.3); culmen from cere, 14.5-16 (15.3); tarsus
43-45 (43.5 mm.). Three females (Chile; Conchitas, Buenos Aires;
Tapia, Tucuman) wing, 280-290 (285)
; tail, 181.8-183.3 (182.5)
culmen from cere, 16.9-18 (17.6) ; tarsus, 4*7.8-50.5 (49.1 mm.).
FALCO F. SEPTENTRIONALIS.
Nine males (Mirador, Vera Cruz; Alta Mira, Tampico; Lake
Palomas, Chihuahua; Hachita, and Luna County, New Mexico;
Fort Huachuca, Arizona), wing, 245-272.5 (259.1); tail, 146.5-187
(172.2) ; culmen from cere, 15.1-17.7 (16.4) ; tarsus, 43-47.5 (45.3
mm.).
Four females (Mirador, Vera Cruz; Mazatlan, Sinaloa; Otero
County, New Mexico; Fort Huachuca, Arizona), wing, 287-298
(293) ; tail, 188.3-203.5 (197.1) ; culmen from cere, 18.5-19.8 (19.1) ;
tarsus, 46.5-53. (49.9 mm.).
GAMPSONYX SWAINSONII SWAINSONII Vigors
Gampsoni/x swainsonii Vigors, ZooI. .Toui-n., vol. 2, April, 1825, p. G9.
(Ten leagues W. S. W. of Bay of San Salvador, Bahia, Brazil.)
A male of this beautiful little falcon was taken September 25,
1920, at Kilometer 200, west of Puerto Pinasco, Paraguay. The
bird was killed as it rested on a dead limb in iho, top of a tree that
stood in the border of a tract of forest. The call note of this individual
was a lovf kee kee. In attitude the bird resembled a sparrow
hawk at rest, but was distinguished by its shorter tail.
Compared with two skins from Diamantina, Brazil, this specimen
differs in a broader collar of black across the hind neck. One side
is nearly immaculate, the other is streaked slightly with rufous.
Measurements are as follows: Wing, 154; tail, 92.5; culmen from
cere, 13; tarsus, 29.5 mm.
Family ACCIPITRIDAE
ELANUS LEUCURUS LEUCURUS (Vieillot)
Milvus leucurus Vieillot, Nouv. Diet. Hist. Nat., vol. 20, 1818, p. 563.
(Paraguay.)
On September 24, 1920, near an alkaline stream known as the
Riacho Salado in the Chaco, 170 kilometers west of Puerto Pinasco,
Paraguay, I saw one of these kites in a savanna dotted with low
;