418 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
REINARDA SQUAMATA SEMOTA Riley: Riley’s Swift 
Reinarda squamata semota Ritry, Proc. Biol. Soc. Washington, vol. 46, 1933, 
p. 39 (El Mango, Brazo Casiquiare, Venezuela). 
SPECIMENS COLLECTED 
lim. o', lad. 9,2im. 9, 1-, Venezuela, El Mango, Brazo Casiquiare, Febru- 
ary 5, 1931. 
lim. 2, Venezuela, Brazo Casiquiare, near Cafio Pamoni, February 19, 1931. 
This is the original series that Riley had when he described semota. 
The adult female from El Mango is the type specimen. 
Gilliard (Bull. Amer. Mus. Nat. Hist., vol. 77, 1941, pp. 468-469) 
has found typical sqguamata to range from British Guiana westward 
to the lower Orinoco (Altagracia and Caicara) as well as to Mount 
Auy4an-tepui, Venezuela. Recently Rogers has examined the present 
examples and has compared them with specimens of squamata and 
concurs in finding semota a valid race. 
Inasmuch as the race semota is still very rare in collections, it may 
be well to state its distinguishing characteristics. It differs from the 
nominate form in having the upperparts a shining greenish black 
instead of brownish black; in having a broader and darker pectoral 
band; and in having the feathers of the throat and center of the 
breast only fringed with white, with the dark basal parts of the 
feathers extensively exposed, and with the under tail coverts shining 
greenish black with only a very narrow white fringe on the inner 
web (instead of nearly all the inner web being white and the outer 
web narrowly edged with the same). 
Peters (Check list of birds of the world, vol. 4, 1940, p. 255) writes 
that “‘birds recorded from eastern Peru may be referable here,’’ while 
Riley (cit. supra) states that “the species has been recorded from 
Peru, but birds from there will almost certainly prove to be different 
from the more eastern birds.” 
Recently Gyldenstolpe (Kungl. Svenska Vet.-Akad. Handl., vol. 
22, No. 3, 1945, p. 72) has indicated that a specimen from Mandéos 
shows characters of semota while another from the same place is 
typical squamata, and suggests that this throws some doubt on the 
validity of semota. This is, however, slight evidence upon which’ to 
base a case against the Casiquiare race. 
Family TROCHILIDAE: Hummingbirds 
THRENETES LEUCURUS LEUCURUS (Linnaeus): White-tailed Barbed-throat 
Trochilus leucurus LINNAEUS, Systema naturae, ed. 2, vol. 1, 1766, p. 190 (“‘Amer- 
ica Meridionale’” = Surinam). 
SPECIMENS COLLECTED 
1 ad. @, 1-, Brazil, Séo Gabriel, Rio Negro, December 29, 1930, January 3, 
1931. 
