28 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



Penelope cequatorialis Chubb, Ibis, 1919, 16, part (Colombia; Ecuador; crit.)- — 

 LoNNBERG and Rendahl, Ark. Zool., xiv, 1922, 15 (Gualea and Nanegal, 

 Ecuador). — Chapman, Bull. Amer. Mus. Nat. Hist., Iv, 1926, 153 (trop. zone 

 w. Ecuador; Gualea; below Mindo; above Bucaj'; El Chiral). 



[Penelope] aeqiiatorialis Brabourne and Chubb, Birds South Amer., i, 1912, 10 

 (Colombia; Ecuador). 



Penelope purptirascens aeqiiatorialis Griscom, Bull. Mus. Comp. Zool, Ixxii, 1932, 

 318 (Ranchon, Panama) ; Ixxviii, 1935, 303 (Costa Rica to western Ecuador). — 

 Peters, Check-list Birds of World, ii, 1934, 13. — Aldrich, Sci. Publ. Cleve- 

 land Mus. Nat. Hist., vii, 1937, 53 (Azuero Peninsula, Panama; spec). — 

 Sassi, Temminckia, iii, 1938, 304 (Bebedero, Costa Rica; spec). — Hellmayr 

 and Conover, Cat. Birds Amer., i. No. 1, 1942, 135 (syn. ; distr.). 



P[enelope] purptirascens aeqiiatorialis Hellmayr and Conover, Auk, xlix, 1932, 

 331 (crit; distr.). 



P[cnelope] plurpiirasce^is] aequatorialis van Tyne, Misc. Publ. Mus. Zool. Univ. 

 Michigan, No. 27, 1935, 10, in text (Panama; Canal Zone). 



Genus ORTALIS Merrem 



Ortalis Merrem, Av. Rar. Icon, et Descr., fasc. 2, 1786, 40. (Type, as designated 



by Lesson, 1829, Phasianus motmot Linnaeus.) 

 Ortalida "Merr[em]" Wagler, Isis, 1832, 1226. 

 Ortalidia (emendation) Fleming, Philos.-Zool., ii, 1822, 230. 

 Penelops "Plin." Reichenbach, Av. Syst. Nat. Vog., 1853, xxvi. (Type, by 



monotypy, Penelope albiventris "Gould" = Lesson i= P. leucogasira Gould.) 

 Penelopsis (emendation) Bonaparte, Compt. Rend., xlii. May 1856, 877. 

 Penelopides van Rossem, Condor, xliv, 1942, 77. (Type, by original designation, 



Ortalida zvagleri (Gray).) 



Small, plainly colored Cracidae (length about 412-649 mm.), v^ith sides 

 of gular area nude, divided longitudinally by a narrow^ feathered area on 

 median strip. 



Bill relatively small (from frontal feathers less than half as long as 

 head), broader than deep at base of exposed culmen; culmen rather 

 strongly decurved terminally, not ridged; nostril longitudinal, narrowly 

 elliptical to rather broadly fusiform, anteriorly nearly in contact w^ith base 

 of rhinotheca, a membranous or cartilaginous piece showing within the 

 basal portion ; cere straight, slightly ascending basally, and, together with 

 greater part of loral and orbital regions and sides of gular region, nude. 

 Wing rather large, very broad and rounded, the longer primaries with 

 tips extending decidedly beyond those of longest secondaries (except in 

 O. zvagleri) ; fourth to sixth primaries longest, the first (outermost) 

 about one-half (in O.v. leucogastra) to nearly three-fifths (in 0. zvagleri) 

 as long as the longest and strongly bowed or incurved. Tail longer than 

 wing (very slightly as in O. v. leucogastra), strongly rounded, the rec- 

 trices (12) relatively broad to very broad, with rounded tips. Tarsus 

 relatively long and stout, less than one-third as long as wing, the acro- 

 tarsium with a single series of large transverse scutella, the planta tarsi 

 with a series of smaller transverse scutella along each side (these less 

 distinct, especially on inner side, in 0. v. leucogastra) ; middle toe nearly 



