Vol. XVIIl, pp. 141-142 June 9, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW SPECIE^^ OF CLAPPER RAIL FRO:\r YUCATAN. 



BY PI \V. NELSON. 



During a recent examination of the series of Mexican birds 

 in the Field C()]nnil)ian Museum I found a single specimen of a 

 new species of clapper rail from the north coast of Yucatan. I 

 am indebted to the courtesy of Mr. C. B. Cory, Curator of P)irds 

 in this museum for the opportunity to describe the species. My 

 tlianks are also due Mr. Ned Dearborn, Assistant Curator of 

 Birds, for his cordial assistance during my recent examination 

 of the collection in his charge. 



Rallus pallidus sp. nov. 



YUCATAN RAIL. 



Tijpr from Rio Lagartos, Yucatan, Mexico. No. 13,20G, $ ad. Field 

 Colnnihian Museum. April 15, 180o. \V. AV. Brown. 



DIstrihnlion. — North coast of Yucatan, and probal)ly of Campeclie, 

 Mexico. 



Specific. cJiaraclers. — Most like Rallus crepitans ivayneihnthiW shorter and 

 slenderer ; breast and outer side of wings more reddish; streaks of graj* and 

 brown on upperparts more stronjily contrasted. 



Description of tijpe. — Top of head and neck bistre brown ; feathers of 

 back, scapulars, tertials, rump and Mi)per tail coverts olivaceous bistre 

 brown, broadly edged with ashy gray producing strongly marked streaks 

 of gray and brown; upper surface of primaries and secondaries nearly 

 Isabella color with a wash of cinnamon ; wing coverts decidedly more 

 cinnamon than primaries and sparingly marked with transverse bars of 

 white; upper surface of tail feathers bistre brown edged with hair brown ; 

 2:^.-Pi!OC. Bioi,. .Soc. Wa.'sh., Voi,. XVIII, 1905. (lU) 



