6. DENDEAGAPUS. 73 



Immature male. Still retains, among the scapulars, feathers largely 

 barred and mottled with rufous and with buff shaft-stripes ; the 

 sides of the neck are mottled and barred with rufous buff; the 

 white marks on the feathers of the underparts are nearly all heart- 

 shaped ; and the outer primaries arc tipped with buff', and even 

 more acute than in the adult. 



Adult female. Differs from the male in having the head and neck 

 barred with black and buff and tipped with sandy ; mantle black, 

 with a subtorminal buff" bar, and mottled with sandy at the extremity ; 

 lower back, rumj), and upper tail-coverts mottled with rufous grey 

 and black, tipped with sandy grey, and with asubterminal pale buff 

 shnft-spot ; chin, throat, and sides of the head more or less mixed 

 with white; neck and chest black, barred with buff; breast greyish 

 black, witli a wide white subterminal patch to each feather ; the 

 feathers of the sides, flanks, and under tail-coverts similar, but with 

 the basal part thickly mottled with sandy buff; the outer webs of 

 the outer tail-feathers more or less margined and mottled with buff. 

 Total length 14-7 inches, wing 7-2, tail 4-3, tarsus 1-4. 



Hab. Same as that of the genus. 



a. cJ ad. sk. Kamtschatka. M. Brandt [C.]. 



b-d. (S $ ad. sk. Saghalien Is. (Dr. Suprunenko). St. Petersburg 



Mus. [E.]. 



6. DENDEAGAPUS. 



Type. 



Dendragapus, Elliot, P. Ac. I'hihtd. 18G4, p. 23 D. obscurus. 



Tail composed of 20 feathers, elongate, truncate, and sub- 

 equal. 



Male with a distinct inflatable air-sac on each side of the neck. 



The 1st primary is much shorter than the 2nd, and falls between 

 the 7th and 8th ; the 4th is slujhtli/ the longest. 



Axillaries long and white. 



Middle toe and claw longer than the tarsus. 



Range. N. America. 



Key to the Species. 



A. Chest and breast not baiTed and marked with 



buff. (3/f/te.) 



a. Tail souifwhat rounded and with a terminal 



grey band. 

 a'. Band wider, varying on the middle feathers 



from 1 to 1 :') iuch obscttrus, p. 74. 



b'. Band narrower, le-ss than an inch wide on 



the middle feathers fuliffinoSKS, p. 75. 



b. Tail square, without a terminal gi'ey band, 



but the tips of the feathers have narrow gi-ey 



margins ricliardsoni, p. 76. 



B. Chest and breast barred and marked with buff. 



(Females.) 



c. Tail with a terminal grey band. 



c'. Band wider, about 08 iuch on the outer- 

 most feathers obscurus, p. 74. 



