640 Bulletin American Museum of Natural History. [Vol. XXXIV, 
Range.— Subtropical Zone of the western slope of the Central Andes and northern 
end of the Western Andes of Colombia. 
Remarks.— Our series of forty-two specimens of Aulocorhynchus albi- 
vitta clearly shows that there are three well-marked forms of this species in 
the Subtropical Zone of Colombia. True albivitta is found in the Eastern 
Andes and eastern slope of the Western Andes; grisecgularis inhabits the 
western slope of the Central Andes and we have also one specimen from an 
altitude of 10,000 feet on the Paramillo at the northern end of the Western 
Andes; while pheolemus is confined to the Western Andes. 
The three forms may readily be distinguished by the color of the throat 
which is nearly white in albivitta, gray in griseigularis, and grayish blue in 
pheolemus. 7 
The Santa Marta bird, A. lautus, appears to be specifically distinct. It 
has the throat of the same color as in grisetgularis but the bill is differently 
shaped and colored, the maxilla being sulcate below the narrower culmen, 
on the base of which the black extends much further. There is no red 
whatever on the bill, and its white basal margin is bordered posteriorly 
with yellow. | | 
Hellmayr (P. Z. S., 1911, p. 1213) has already called attention to the 
applicability of Gould’s name phewolemus to the form of the Western Andes, 
showing also that Gould erroneously referred Venezuelan specimens to this 
form and that a further error has been made (Cat. Bds. B. M., XIX, p. 158) 
in designating a Venezuelan specimen as Gould’s type. 
In view of my lack of specimens from Concordia, the type-locality of 
pheolemus, and of the occurrence of the bird for which I have here proposed 
the name grisergularis at the northern end of the Western Andes, it may 
be questioned whether the Concordia bird is referable to the blue-throated 
or gray-throated race. Gould’s description of phawolemus as having the 
“throat deep grayish blue” can apparently, however, apply only to the more 
southern form, later described by Bangs as A. petax, of which I have topo- 
types from San Antonio. 
Our ten specimens of griseigularts are from the following localities: 
Paramillo, 1; Sta. Elena, 4; Salento, 3; Miraflores, 2. 
Picumnus granadensis antioquensis subsp. nov. 
Char. subsp.— Similar to P. g. granadensis but whole breast grayish, the flanks 
and abdominal region distinctly streaked. Differs conspicuously from all the races. 
of P. olivaceus in being less yellow throughout. 
Type.— No. 188352, Am. Mus. Nat. Hist., o ad., Peque (5000 ft.), Western 
Andes, Antioquia, Colombia; Miller and Boyle. 
