64 PASSERES 
rounded, not emarginate as in Remiza. Tarsus about twice as long as culmen, decidedly longer 
than middle toe with claw; acrotarsium distinctly scutellate. Outer toe slightly longer than 
inner one; basal phalanx of middle toe adherent to outer toe for more than half of its length, 
entirely adherent to inner toe. 
Coloration, Above dingy grey, below uniform greyish white. Adult birds with the top 
and sides of the head olive- or gamboge-yellow, brighter on forehead, duller on occiput, and 
lesser upper wing coverts clear chestnut-rufous. 
Geographical Distribution. South-western districts of United States and northern 
states of Mexico. 
Habits and Nidification. Resembles in habits and nidification the Palearctic Penduline 
Tits (Remiza). The nest, a bulky globular or retort-shaped structure of thorny twigs, with 
entrance a small hole in side, is placed among twigs of thorny trees and bushes. The eggs are 
pale greenish blue, speckled with reddish brown, hence different from those of Remiza. 
KEY TO THE SUBSPECIES OF AURIPARUS 
1. Larger : wing G 50-55, 9 4953; tal O& 46-50, Q 43,5-48 mm, 
Yellow of head duller in adults. Young with upper parts uniform 
greyish brown, abdomen and under tail coverts whitish . . . . . 1. A. FLAVICEPS FLAVICEPS. 
2. Smaller : wing & 48,5-52, Q 47-51; tail G& 39,5-44, Q 39-44 mm. 
Yellow of head brighter in adults. Young with upper parts strongly 
olivaceous, abdomen and under tail coverts olive yellowish . A. FLAVICEPS LAMPROCEPHALUS, 
nN 
1. Auriparus flaviceps flaviceps (Sundevall). (PI. 2, Fig. 4.) 
Egithalus flaviceps Sundevall, Oefv. Vet. Akad. Férh. Stockholm, Vol. 7, n° 5, p. 129 (1850) (« Sitka vel California ») 
Conivostvum ornatum Lawrence, Ann. Lyc. Nat, Hist. New York, Vol. 5, p. 112, pl. 5, f. 1 (1852) (Rio Grande. 
Texas). 
Fig. Ann. Lyc. Nat. Hist. New York, Vol. 5, pl. 5, f. 1. 
Hab. Southern Texas, New Mexico, Arizona, S. W. Utah, S. Nevada, andS. California; Northern Lower 
California; also in Mexican States of Sonora, Chihuahua, Durango, Coahuila, Nuevo Leon and 
Tamaulipas. 
2. Auriparus flaviceps lamprocephalus Oberholser. 
Auriparus flaviceps ornatus (nec C. ornatwn Lawrence 1852) W. E. Bryant. Zoe, Vol. 1, p. 149 (1890) (part. : Lower 
California). 
Auriparus flaviceps lamprocephalus Oberholser, Auk, Vol. 14, p. 391 (1897) (same locality). 
Hab. Cape St. Lucas district of Lower California and opposite parts of Southern Sonora (Guaymas, 
Alamos etc.). 
14. GENUS CEPHALOPYRUS BONAPARTE 
Cephalopyrus Bonaparte, Compt. Rend. Acad. Sc. Paris, Vol. 38, p. 62 (1854) (sp typ. : Parus 
fiammiceps Burton). 
Characters. Bill slender, much shorter than head, with both culmen and gonys nearly 
straight, culmen above rounded, and with acute tip. Nostrils basal, round, very large (much 
larger than in the other genera of the subfamily), entirely exposed (not hidden by antrorse, 
