BIRDS OF NORTH AND MIDDLE AMERICA. 673 



According to this view of their relationships their nomenclature would 

 be as follows: 



1. Leucolepis thoracicns. 



a. Leucolepis thoraciais tlioracicus. 



b. Leucolepis tlioracicus dichrous. 



2. Leucolepis phseocephalus. 



a. Leucolepis phseocephalus phxocephalus. 



b. Leucolepis phxocephalus brunnescens. 



c. Leucolepis phseocephalus lawrendi. 



3. Leucolepis modulator, 



4. Leucolepis salviui. 



LEUCOLEPIS LA\WRENCII (Sclater). 

 LAWRENCE'S MUSICIAN WREN, 



Adult inale. — Pileum, hindneck, back, scapulars, rump, and upper 

 tail-coverts plain rich warm-sepia brown, sometimes with very indis- 

 tinct narrow bars of dusky, especially on back; wings and tail rather 

 lighter or clearer brown (the secondaries sometimes decidedly more 

 rufescent), the remiges and rectrices distinctly barred with black, the 

 greater wing-coverts more narrowly (sometimes very indistinctly) 

 barred with dusky; auricular, suborbital, and malar regions, throat, 

 chest, and anterior portion of sides of neck, uniform bright chestnut 

 or ferruginous-chestnut, the whole chin " and supraloral region some- 

 times also of this color;* sides of neck (except near auricular region) 

 and sides of chest and breast lighter brown than upper parts, becom- 

 ing darker and richer (nearly mummy brown) on jBianks; median 

 portion of breast and abdomen brownish gray; under tail-coverts deep 

 russet or russet-brown, sometimes with darker bars and paler tips; 

 bill black or dusky, the under side of mandible more or less exten- 

 sively light colored; iris brown; legs and feet dark brownish; length 

 (skins), 105-128 (136.6); wing, 62.6-67.5 (65.2); tail, 29.5-33.5 (31.3); 

 culmen, from base, 18.5-20.6 (19.6); tarsus, 22.5-25.6 (24.2); middle 

 toe, 15.6-18.5 (17.2)." 



Adult female. — Similar to the male, and not always distinguishable, 

 but averaging slightly lighter brown above and with median under 

 parts paler (sometimes pale buflfy gray or grayish buff); length (skins), 

 110.5-222 (113.6); wing, 69-66 (62.4); tail, 26.5-33 (29.7); culmen. 



« Usually, but by no means always, the chin is dusky, at least laterally, as are 

 also the anterior portion of the malar region and the anterior margin of the auricular 

 region. 



6 Sometimes the chestnut not only occupies the supraloral region, but extends, 

 narrowly, over the eyes, and sometimes the forehead is more or less strongly tinged 

 with chestnut. 



" Six specimens. 



10384— TOL 3—03 43 



