BIRDS OF NORTH AND MIDDLE AMERICA. 243 



Adult female.— length (skins), U9.86-165.10 (157.18); wing, 62.23- 

 71.12(66.55); tail, 71.12-83.82 (77.17); exposed culmen, 12.70-13.46 

 (12.95); depth of bill at base. 6.86-7.37 (7.11); tarsus. 23.37-21.89 

 (21.13); middle toe, 16.26-16.51 (16.38); graduation of tail. 12.70-20.32 

 (16.51)/ 



Southeastern extremity of Mexican plateau, in State of Oaxaca 

 (Cerro San Felipe, Ejutla, etc.). 



Peurxu notosticta Sclater and Salvin, Proc. Zool. Soc. Lond., 1868, 322 (Oaxaca, 

 s. e. Mexico; coll. Salvin and Godman). — Baird, Brewer, andRiDC4WAY, Hist. 

 N.Am. Birds, ii, ISJ-t, 38, footnote. — Ridgway, Ibis, 1883, 400 (crit. ). — Sal- 

 vin and GoDMAN, Biol. Centr.-Am., Aves, i, 1886, 393, pi. 28, fig. 1. 



l^Peucxa'] notosticla Sclater and Salvin, Nom. Av. Neotr., 1873, 32. 



P. [^t'Hcseci] notosticta Ridgway, Man. N. Am. Birds, 1887, 430. 



\^Peiicxa ruficeps.'] Subsp. y. Peucxa notosticta Sharpe, Cat. Birds Brit. ^lus., xii, 

 1888, 715. 



lAmmodramns'l notosticta Gray, Hand-list, ii, 1870, 96, no. 7431. 



AIMOPHILA RUFESCENS RUFESCENS Swainson. 

 RUSTY SPARROW. 



Similar to A. 7iotosticta, but much larger, with relativel}" deeper bdl 

 and shorter tail; the former with mandible plumbeous or otherwise 

 light-colored, the latter chestnut-brown instead of gra34sh brown; 

 wings largely chestnut-brown. 



Adults {sexes alike). — Pileum chestnut, divided by a more or less dis- 

 tinct median stripe (rarely obsolete) of olive-grayish or dull buffy and 

 streaked with black, at least posteriorly or along exterior margin; 

 back and scapulars brown, luore or less distinctlv streaked with black; 

 wings brown, inclining to chestnut on secondaries and proximal greater 

 coverts; tail chestnut-brown or russet; sides of head, including a broad 

 superciliary stripe (this whitish anteriorly) olive-grayish; a whitish 

 orbital ring surrounded by dusky; a dusky postocular streak and a 

 verv distinct black submalar streak; malar region, chin, throat, and 

 abdomen dull white or pale buliy; rest of under parts dull gravish 

 buffy, becoming deeper and more brownish on sides and flanks. 



Young. — Pileum du.sky. indistinctly streaked with brown, and divided 

 medially by a broken stripe of pale olive or gra3-ish buti'y streaks; 

 under parts light dull yellow, the chest and sides of breast marked 



^ Two specimens, of which I suspect the larger to be wrongly sexed. Two other 

 specimens, with sex undetermined, are probably males; if they are, and my surmise 

 regarding determination of the sex of the larger alleged female be correct, the sexual 

 difference of size would be about as follows: 



Four males: Length (two specimens), 160.02-165.10 (162.56); wing, 68.58-71.12 

 (69.85); tail, 76.20-83.82 (80.26); exposed culmen, 11.94-13.46 (12.70); depth of bill 

 at base, 6.86-7.62 (7.37) ; tarsus, 22.86-24.89 (23.88); middle toe, 15.75-17.27 (16.51); 

 graduation of tail, 10.16-20.32 (14.22). 



One female: Length, 149.86; wing, 62.23; tail, 71.12; exposed culmen, 12.70; depth 

 of bill at base, 6.86; tarsus, 23.37; middle toe, 16.26; graduation of tail, 12.70. 



