pla NELSON, Wew North American Birds. 267 
General notes.—This form may be readily separated from magna, 
mexicana, inexspectata and hoopesi by its proportions and by the 
yellow on the malar stripe, and from weg/ecta by its darker colors. 
Quiscalus macrourus obscurus, subsp. nov. GUERRERO 
GRACKLE. 
Type, No. 144595, 2 ad., U. S. Nat. Mus., Biological Survey Collection. 
Acapulco, Guerrero, Mexico, January 14, 1895, E. W. Nelson and E. A. 
Goldman. 
Distribution. — Pacific coast region of Mexico from San Blas, Tepic, to 
southern Guerrero. 
Subspectfic characters. — Similar to but smaller than true Q. macrourus 
Males scarcely distinguishable in color but females very much darker than 
those of the typical bird. 
Description of type.— Above brownish black glossed with dull greenish ; 
head a little browner than middle of back; below very dark almost black- 
ish with greenish; throat and neck only slightly paler than rest of under 
parts. 
Dimensions of type.— Wing, 159; tail, 162; culmen, 32; tarsus, 45. 
Amphispiza bilineata pacifica, subsp. nov. Sonora BLACK- 
THROATED SPARROW. 
Type, No. 164339, Q ad., U.S. Nat. Mus., Biological Survey Collection. 
Alamos, Sonora, Mexico, December 29, 1898, E. A. Goldman. 
Distribution. — Pacific coast region of southern Sonora and northern 
Sinaloa. 
Subspecijic characters. —In general appearance similar to true A. dzlin- 
eata from Texas but with much smaller white spots on ends of tail feath- 
ers, in this character agreeing with A. d. deserticola from which it differs 
in darker color and smaller size. 
Dimensions of type. — Wing, 63; tail, 57; culmen, 10; tarsus, 19. 
Vireo perquisitor, sp. nov. VERA Cruz VIREO. 
Type, No. 164084, @ ad., U. S. Nat. Mus., Biological Survey Collec- 
tion. Papantla, Vera Cruz, Mexico, March 12, 1898, E. A. Goldman. 
Distribution. — Heavily forested coast country in northern Vera Cruz. 
General characters.—Resembles V. noveboracensis but smaller with 
darker, slenderer bill, and much darker and duller colors above and 
below, especially on throat and breast. 
