BIEDS OF NOETH AND MIDDLE AMERICA. 443 



MELOZONE BIARCUATUM iPrevost). 

 PREVOSTS GROUND SPARROW. 



Adult (.s7,/v.s- i/l/ke). — Median portion of forehead and spot on lower 

 portion of auricular region l)lack; rest of pileuni and upper posterior 

 portion of auricular region chestnut or chestnut-rufous; rest of head, 

 includino- loral. orbital, and superciliary regions, upper anterior por- 

 tion of auricuhir region, malar region, chin, throat, and post-auricidar 

 space white, sometimes tinged with pale dull huffy; hack, scapulars, 

 rump, upper tail-coverts, wings, and tail plain olive or olive-brown, 

 the lesser wing-coverts more grayish; posterior portion of sides of 

 neck, sides of chest, and sides of breast ash gray; sides and flanks 

 wood l)rown, the latter more l)uffy; under tail-coverts dull bufly; rest 

 of under part Avhite; bill black; legs and feet horn brownish. 



Adif/f //«^/('.— Length (skins), 146.56-156.21 (150.88); wing, 68.83- 

 75.;>5 (71.88); tail, 63.50-73.66 (67.06); exposed culmen, 13.21-14.22 

 (13.46); tarsus, 24.13-27.43 (25.91); middle toe, 15.49-18.03 (16.76).^ 



Adult /h/i(de.— 'Length (skins), 149.61-150.37(150.11); wing, 61.98- 

 63.25 (62.74); tail, 59.69-61.98 (60.45); exposed culmen, 13.72-14.22 

 (13.97); depth of bill at base (one specimen), 8.89; tarsus, 23.88-24.89 

 (24.38); middle toe, 15.49-15.75 (15.62).- 



Highlands of Guatemala (Dueiias, Escuintla, Retalhuleu, Cohan, 

 etc.) and Chiapas (Chicharras).' 



Pyrgita hiurcnaia Prevost, Voy. Venus, Ois., 1846, Atla9,.pl. »> (Guatemala; "Cali- 

 fornia"; Paris Mus. )• 



Emberiza Marcuata Pkevost and Des Murs, Voy. Venus, v, Ois., 1855, 216. 



[Pi/rglfiomal biarcuatus Bonaparte, Consp. Av., i, 1850, 486 ("California;" 

 Guatemala) . 



Pyrgisoma biarcuatum Sclatee and Salvix, Il)i8, 1859, 5, 18, 2)1. 5, fig. 2 (egg), 

 (Duefias, Guatemala) ; Proo. Zool. Soo. Lontl., 1868, 325 (monogr. ). — Sclater, 

 Cat. Am. Birds, 1862, 120, part (Guatemala) .—Salvin, Cat. Strickland Coll., 

 1882, 234 (Guatemala). — .Salvin and Godman, Biol. Centr.-Am., Aves, i, 

 1886, 401 (Dueiias, Escuintla, Retalhuleu, and Coban, Guatemala). — Siiarpe, 

 Cat. Birds Brit. Mus., xii, 1888, 733. 



[Pi/rf/Zsonut] biarcuatum Sclater and Salvin, Nom. Av. Neotr., 1873,33. 



Mdozone hiarcuata Cabanis, Journ. fi'ir Orn., xiv, July, 1866,533, part (Guate- 

 mala). 



[Embernagra] biarcuata Gray, Hand-list, ii, 1870, 92, no. 7349. 



^ Three specimens. 



^Two specimens. 



'■'A specimen from Dueiias, Vera Paz, Guatemala (no. 20424, male ad., August 3, 1859, 

 O. Salvin) , is not only decidedly larger than an adult male from Chicharras, Chiapas, 

 but is decidedly grayer in its coloration, and the flanks are less fulvescent. It is in 

 worn plumage, however, while the Chiapas specimen has recently molted. Several 

 specimens from Guatemala, but of unknown locality, and with sex undetermined 

 agree with Chiapas specimens. 



