2 28 RiDGWAY, Ne-w Genera and Species of American Birds. \ju\y 



Atlapetes pileatus dilutus. Chihuahuan Pileated Sparrow. 



Similar to A. pileatus (Wagler) but averaging smaller, with smaller 

 and more slender bill, grayer upper parts, and yellow of under parts paler 

 and duller. Wing, 2.45-2.65 (.2.53); tail, 2.35-2.60 (2.50); exposed culmen, 

 0.40-0.47 (0.44); depth of bill at base, 0.25-0.30 (0.28); tarsus, 0.90-0.95 

 (0.92); middle toe, 0.61-0.65 (0.63). 



Northwestern portion of Mexican plateau (Bravo and Jesus Maria, 

 Chihuahua). 



Type, No. 99962, U. S. Nat. Mus., $ ad., Jesus Maria, Chihuahua, 

 April 25, 18S4; R. R. McLeod. 



Arremonops venezuelensis. Venezuelan Striped- 

 crowned Sparrow. 



Similar to A. conirostris (Bonaparte), but decidedly smaller, bill more 

 slender, and color of upper parts of a duller, more brownish, olive-green. 

 Length (skins), 5.S5-6.00 (5.92); wing, 2.77-2.83 (2.80); tail, 2.40-2.47 

 (2.44) ; exposed culmen, 0.58-0.60 (0.59) ; depth of bill at base, 0.30; tarsus, 

 0.99-1.01 (i.oo); middle toe, 0.63-0.65 (0.64). 



Venezuela (La Guayra; Puerto Cabello ; Carupano ; Tachira). 



Type, No. 1 19280, U. S. Nat. Mus., Puerto Cabello, Venezuela; received 

 fi-om Count von Berlepsch. 



The synonymy of this form is as follows : — 



Embernagra conirostris (nee Arremon conirostris Bon AV arte), Sci^atkr 

 & Salvin, Proc. Zool. Soc. Lond. 1868, 167 (Caripano, Venezuela). 



[Embernagra striaticeps.'\ Subsp. d. Embernagra conirostris Sharps, 

 Cat. Birds Brit. Mus. XII, 18S8, 763, part (Carupano and Tachira, 

 Venezuela. 



Arremonops richmondi. Richmond's Sparrow. 



Similar to A. conirostris (Bonaparte) but much brighter olive-green 

 above, gray of head much deeper, and chest distinctly ash-gray. 



Honduras (Segovia River) to Veragua. 



Type, No. 126189, U. S. Nat. Mus., $ ad., Greytown, Nicaragua, Feb. 

 16, 1892 ; C. W. Richmond. 



This is the Ember7iagra striaticeps of authors, but not of Lafres- 

 naye, as I have been able to ascertain by examination of the 

 type specimens of the latter, in the collection of the Boston 

 Society of Natural History. The latter clearly are referable to 

 the Colombian form known as Emher7iag7-a conirostris (Bona- 

 parte) , to which Panama examples in the U. S. National Museum 



