NO. 1153. REVISION OF THE GENUS THRYOMANES—OBERHOLSER. 435 



THRYOMANES BEWICKII CHARIENTURUS, new subspecies. 

 Thryothorus bewickii spilurtis A. O. U. Check-List, 1886, p. 327 (in part). 



Chars, subsp. — Thryomanes T. b. eremophilo similis, a quo diflt'ert 

 partibus superioribus et liypochondriis obscurioribus, striga super- 

 ciliari paululum latiore, alls caudaque multo brevioribus. 



Measurements [23 specimens). — Wing, 48.5 to 55 (average, 51.7) mm.; 

 tail, 47.5 to 54.5 (average, 51.5) ram.; exposed culmeu, 12.5 to 14.5 

 (average, 13.8) mm.; bill from nostril, 9 to 11.5 (average, 10.2) mm.; 

 tarsus, 18 to 19.5 (average, 18.8) mm. ; middle toe with claw, 14 to 16 

 (average, 15.4) mm. 



Type locality. — Nashoguero Valley, Lower California (Mexican and 

 United States boundary line). 



Geographic distribution. — Coast region of southern California, north 

 to about Pasadena, south to latitude 28°, Lower California; Santa 

 Cataliua Island, California. Resident throughout its range. 



r//2)e. — Male, adult; No. 134163, U.S.N.M.; Kashoguero Valley, 

 Lower California, June 5, 1894; Br. Edgar A. Mearns. 



Description. — Upper parts dull grayish sepia, slightly rufescent on 

 rump, the feathers of this part with more or less hidden roundish white 

 markings; superior tail-coverts hair brown, obscurely barred with 

 dusky. Wings fuscous, secondaries alternately barred On external 

 webs with blackish and the color of the back; lesser and median 

 coverts, with margins of greater series, also similar to the upper sur- 

 face; primaries narrowly edged on basal portion of exterior webs with 

 bufty. Tail black, the central rectrices hair brown, with regular bars of 

 black ; exterior feathers with terminal portion dull smoke gray, the outer 

 webs barred with dingy white; remaining feathers barred on external 

 webs and tipped with hair brown. Superciliary stripe white; lores 

 and cheeks grayish white, mixed with brownish; postocular streak like 

 the crown; sides of neck deep brownish gray; chin and throat white 

 (soiled by wear); rest of under surface grayish white (adventitiously 

 washed with brownish); sides and flanks tinged with smoke gray; 

 crissum heavily barred with black; lining of wing grayish white. 



Young in first plumage. — Male; No. 134165, U.S.KM.; JSTashoguefo 

 Valley, Lower California, June 5, 1894; Dr. Edgar A. Mearns. Above 

 grayish sepia, this color extending over the middle tail feathers and 

 the basal portion of the external webs of all the rest with exception of 

 outermost pair, these parts of the tail barred with black ; remainder of 

 tail clove brown, tipped with slate gray, terminal portions of the two 

 outer pairs of rectrices rather paler, and external webs of outermost 

 pair marked with dull buffy; rump paler than the back and with a few 

 concealed whitish spots, faintly barred, as are also the upper tail-coverts, 

 with darker; wings externally with somewhat obscure bars of dark 

 brown. Superciliary stripe bufiy white; cheeks brownish white, much 



