100 NUltTII AMKUR'AN i!li;i>;i. 



b, Ifciiil iiiiil iicik iisliy, paliT rm ji,<,'iiliiiii, wIiitc tlio color liuli-s grnfluiilly 

 into the whitr ol lii'r,i-.|, liiiiiip iiiiil iippi'i' liiil-fovcM'ls liri^'lit, nil'ous. 



.',. P. supercilioss.' An ohsi.iiic wliiiish siiiHTfiliuiy sln|>c. Greater 

 \vi:i^'-c()verl.s olisoletely wliitisli at ti])s; no other white !iiarkiiif,'s on 

 ujiper parts, and |l • tril-piuuhes iiKhsliact. Ilnh. Brazil. (IVrhiips not 

 fieniiino Pipiln.) 

 Bt Siih's asiiy or liii;^eil witli ochraeeniis ; lower tail-covcrts oehra(;eoiis, not 

 sliaiply coiitfiisled willi while on the ahdonien, or else the ahilonieii coiieolor 

 Willi ihe side. Ileiid never Mark, and upper parts without lifrht markings 

 (except the winj.' m fuse UK var. iilbifiitlis). 

 a. AN'inus and tail olive-f^reen. 



(i. P. chlorurus. Whoh' pilenni (except in yonng) deep ruCons, sharply 

 delined. A\'hole throat ]mre white, iininaeulate, and sharply delined 

 ngainsi the surrounding dee)) nsh ; a maxillary nnd a short snpraloral 

 stiipe ol' white. Anterior jiaits ol' body streaked in young. Hah. 

 AVestern Province ol' ['nited States. 

 6. Wiiejs and tail grayisli-hrowii. 



7. P. fuBCus. A whitish or or hracoous patch covering the throat con- 

 trasiiny with the adjacent jiortions, and boimdetl by dusky specks. 

 Lores and ehin like the throat. Hub. Mexico, and United States west 

 of Itoeky Mountains. (Five rai'es.) 



8. P. aberti. Throat concolor with the adjacent portions, and without 

 distinct spills. Lores and ehin blackish. Hub. Colorado region of 

 Mitldle I'lovince, United Stales. (Only one form known.) 



SECTION I. 



Hedd bldclc. 



Pipilo erythrophthalmus. 



After a careful study of the very large collection of Black-headed Pipilos 

 (lea\ iiig for the i)reseiit tlie coiiwideiatioii of those with olive-<>reeii bodies) 

 in tlie Siuitii.souiiui ]\Iuseuin, we have come finally to the conclusion that all 

 tlie sjH'cies descrilied as havinj,' the scapulars and wing-coverts siiotted with 

 while — as nrdicii.% orcrjoimii, and mefjalonijx, and even including the difier- 

 ently colored P. manilntus of Mexico — are probably only geographical races 

 of one species, nipresenting in the trans-Missouri region the P. cri/fhwjMMl- 

 mii>i of the eastern division of the continent. It is true that siiecimens may 

 be selected of the four races capable of accurate definition, but the transition 



from forelicail, .7:3 ; from nostril, .-13. Lf^s : Tar.sus, 1.24 ; miildlo toe and ckw, 1.10; claw 

 alone, .;!() ; liinil toe and cliiw, .8;') ; claw alone, .SO. No. 00,0,50, Mexico, is similar, in all 

 essential respects. 



From the analogies of the black IMjiilos, it is reasonable to consider those two birds as distinct 

 species, or at Ica.st varieties, especially as the siiccimeii before Us of that with unspotted wings 

 is marked male. The gen<'ral aiipcaranec is otherwise much the .same, the uii.spotted bird rather 

 smaller, and without the dusky interscapular markings ilcscribeil in maci;)iii/.>: Should No. 50,225 

 reiiresent a distinct siiccies, it may be called /'. chloniHomii, and ilistinguisUed as above. (00,050, 

 Mexico, norcvni).) 



1 Pqnhi liitcnilis(S.KT\\). Em lierizti htkniUs, X.\rT. JFus. Vind. MSS. Poosjnxd lat. Burm. 

 Th. nra.s. Ill, Av. 2, y. 2\:, PipUo mpcralinsa, Swains. An. Men.ng. 311, 95, fig. 59. 



