530 BULLETIN 50, UNITED STATE8 NATIONAL MUSEUM. 



('('. Paler and grayer, the back broccoli brown, the flanks grayish bnff or 

 pale wood-brown. (Yucatan and Campeche. ) 



Pheugopedius maculipectus cano-brunneus (p. 53ti) 

 cc. Throat immaculate white (margined laterally with a more or less distinct 

 submalar streak of black ) . « ( P heugopedim felix. ) 

 d. .Sides of head broadly and conspicuously streaked with l)lack. (Mainland 

 forms. ) 

 e. Larger (wing 56.5-60 in male, 53.5-58.5 in female; coloration darker and 

 more rufescent, the flanks bright tawny-ochraceous. '' 

 /. Smaller, with relatively shorter tail (adult male averaging, wing 58.2, 

 tail 56.2, exposed culmen 15.9, tarsus 21.4; adult female, wing 54.3, 

 ' tail 52.3, culmen 15.5, tarsus 20). (Southwestern ^Mexico. ) 



Pheugopedius felix felix (p. 536) 

 /. Larger, with relatively longer tail (adult male averaging wing 59.1, tail 

 61.6, exposed culmen 16.2, tarsus 21.8; adult female, wing 56.5, tail 

 59.2, exposed culmen 15.7, tarsus 21.2). ( South^ceMral Mexico.) 



Pheugopedius felix grandis (p. 537) 

 (v. Smaller (wing 53-o8 in male, 51-55 in female); coloration paler and 

 grayer, the flanks grayish buff or clay color. (Western ^Mexico.) 



Pheugopedius felix pallidus (p. 538) 

 dd. Sides of head more lightly and .more sparsely streaked with black, some- 

 times with streaks obsolete. (Tres Marias Islands forms.) 

 e. Paler; upper parts and flanks averaging paler than in P. /. jjaUidus, 

 (Maria Madre Island, Tres Marias group.) 



Pheugopedius felix lawrencei (p. 538) 

 ee. Darker; upper parts and flanks as dark as average of P. /. pallidus. 

 (Maria Magdalena Island, Tres Marias.) 



Pheugopedius felix magdalenae (p. 539) 



PHEUGOPEDIUS ATROGULARIS ( Salvin). 

 BLACK-THROATED WREN. 



Adult mate. — Above plain dark chestnut-brown or vandyke brown, 

 the pileum usually darker and duller, the upper tail-coverts with dusk}' 

 bars (mostly concealed) ; tail black, the outer webs of rectrices usuall}' 

 showing traces of brownish bars, especially on basal portion; tertials 

 dusky margined with chestnut-brown, the concealed portion of other 

 wing-feathers also dusk}^; sides of head, chin, throat, and chest black„ 

 the auricular and superciliary regions more or less streaked with 

 white; under parts of body, posterior to chest, plain mummy brown, 

 the feathers dusky beneath surface; under tail-coverts black, barred 

 with white and pale brown; maxilla l^lack with paler tomia; mandible 

 grayish (bluish gray in life'O; legs and feet grayish dusk}- or dark 

 horn color (in dried skins); length (skins), 132-146 (110); wing, 

 64-69 (66.3); tail, 49-55 (51); exposed culmen, 20; tarsus, 24-26 (25); 

 middle toe, 15-16 (15.3).^ 



« This sometimes obsolete. 



^P.J. grandis wuries in coloration, the extremes closely matching P. /. /c/u: and 

 P./. pallidus, respectively; hut it may always l>e distinguished by its greater meas- 

 urements. 



<^Three specimens. 



