448 I'ROCEKDINGS OF THE NATIONAL MUSEUM. 



THRYOMANES BREVICAUDUS Ridgway. 



Thryomanea brevicauda KiuciWAY, J{ull. IJ. 8. (Jeol. iV (Joog. Suiv. Tfir., 1876, II, 



No. 2, p. 186. 

 Thryolhoriix hrvvicaiida SiiAurK, Cat. Hirds Hri(. Mum., 1881, VI, p. 227. 



Chars, up. — Thryomanes T. b. cerioeiisi attinis, sed cauda brevissiina, 

 rostro multo loii.yiore, alis ])ievi()iibns, uotaeo obscuriore, prinio visa 

 distiiigiiendus. 



Me<tfinr<"mentn {4 specimens). — Win^!,-, 45.5 to 50 (average, 47.9) iiiiii.; 

 tail, 40.5 to 44 (average, 42.2) mm.; exposed culinen, Ki to 17 (average, 

 16.5) mm.; bill from uostril, 11 to 12.5 (avenige, 11.8) mm.; tarsus, 17 

 to 18.5 (average, 17.9) mm.; middle toe with claw, 15 to 1G.5 (average, 

 IC) mm. 



Type locality. — Guadalupe Island, Lower California. 



Geof/raphic disirihuUon. — Guadiilupe Island, Lower California. 



Type.— Ai\\\\t; No. 70042, U.H.N.M.; Guadalupe Island, Lower Cali- 

 fornia; E. Palmer. 



Description. — IJpjjer ])arts uniform dull grayish bistre, the feathers 

 of the rump with no indication of white si)ots. Wiiig-(iuills fus(^ous, 

 secondaries obsoletely barred externally, the innermost on both webs, 

 with the color of the back; primaries margined basally with pale 

 brown; wing-coverts like the upper surface. Middle rectrices, and at 

 least basal i)ortion of external webs of the rest, hair brown with regular 

 bars of blackish; remainder of tail brownish slate, nearly all the 

 feathers with obscure transverse markings of blackish, these continu- 

 ous with those on the outer webs; tips of icctrices dull brownish gray, 

 the exterior webs of two outermost pairs indented distally Avith grayish 

 white. Conspicuous sui)erciliary stripe dull white; lores and cheeks 

 grayish white, mixed with brown; posto(;ul;ir streak brown like the 

 back; sides of rteck grayish brown, but slightly paler than the shade 

 of the upper surface; under parts dull grayish white, almost pure 

 white on chin and throat; sides and tlanks dee]) brownish gray; crissum 

 narrowly barred with black; axillars and lower wing-coverts grayish 

 white. 



Youny in, first pJurnaye. — Female?; No, 141<)4f), U.S.N.M., Biological 

 Survey collection; Guadalui)e Island, Lower California, May 25, 1802; 

 C. P. Streator. Upper surface dark brownish gray, this color extend- 

 ing over the central i)air of tail feathers and the external webs of all 

 the rest save outermost pair, these jwrtions barred with black; remain- 

 der of tail black, tii)ped with dull gray,exterior webs of outermost pair 

 of rectrices marked with an irregular stripe of dull white, and mar- 

 gined with the same color. Ivump slightly paler and more rufescent 

 than the back, some of the feathers with concealed spots of light gray- 

 ish; edgings of greater coverts somewhat rufescent, those of primaries 

 buffy. Superciliary stripe white; ])ostocular streak like the crown; 

 lores and (;heeks brownish white, somewhat mixed with darker; below 



