BIRDS OF NORTH AND MIDDLE AMERICA 77 



RALLUS LONGIROSTRIS YUMANENSIS Dickey 

 Yuma Clapper Rail 



Adult (sexes alike). — Similar to Rallus longirostris saturatus, but 

 bill shorter, the cinnamon of the throat, breast, and anterior part of 

 abdomen brighter, more pinkish, not washed with grayish. Forehead, 

 crown, occiput grayish olive-brown, the feathers with shiny blackish 

 shafts, hind neck slightly paler and more grayish and the feathers 

 clouded with dusky hair brown, especially medially; interscapulars, 

 scapulars, back, rump, and upper tail coverts dark sepia, the feathers 

 ^'ery broadly edged and tipped with dull light grayish olive washed 

 faintly with brownish, the margins widest, the dark central area 

 narrowest, on the rump and upper tail coverts; exposed surface of 

 greater upper secondary coverts (in folded wing) between buffy brown 

 and Saccardo's umber, rather darker outwardly; the inner median 

 and lesser coverts between buffy brown and citrine drab ; outer median 

 and lesser coverts snuff brown to Saccardo's umber ; primaries, greater 

 primary coverts, and secondaries fuscous, the innermost secondary 

 like the long scapulars, but less brownish marginally than the latter ; 

 rectrices fuscous edged like their upper coverts with brownish pale 

 grayish olive, the margin widest on the median pair; sides of head 

 dull mouse gray, the lores darker and more brownish; the lower eyelid 

 dull creamy white; supraloral stripe buffy white flecked with rusty; 

 malar stripe not well defined, dull light pinkish cinnamon fading to 

 almost white anteriorly; sides of neck like the hind neck but paler 

 and more or less suffused with light pinkish cinnamon ; chin and throat 

 white ; throat and breast avellaneous with a cinnamon tinge, paling to 

 light avellaneous on the middle of the breast; abdomen dull creamy 

 white; sides, flanks, vent, and under tail coverts deep grayish hair 

 brown, the flanks lighter, all barred with white, the lateral under tail 

 coverts nearly all white on their outer webs, a few nearly all white on 

 both webs, thighs between drab and hair brown posteriorly, dull 

 creamy white anteriorly ; under wing coverts grayish hair brown with 

 very narrow, widely spaced bars of dull white; bill (in dried skin) 

 ochraceous-orange, darkening to olive-brown terminally and to bister 

 along the culmen ; tarsi and toes bister. 



Other plumages not known. 



Adult male (type). — Wing 156; tail 71; exposed culmen 58; tarsus 

 51.5 ; middle toe without claw 46 mm. 



Adult female. — Wing 14^148; tail 62-63; exposed culmen 53.5; 

 tarsus 50; middle toe without claw 44-45 mm.'^® 



' Two specimens. 



