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REVISION OF THE CLAPPER RAILS OBERHOLSER 333 



brownish chaetura drab of the flanks, and narrowly barred throughout 

 with dull white; thighs posteriori}^ cream color, anteriorly mouse gray. 



Measurements. — Adult male ^''r Wing, 135-155 (average, 146) mm; 

 tail, 57.5-67.5 (61.8); exposed culmen, 60.5-66 (63.3); tarsus, 50-59 

 (55.3); middle toe without claw, 44-49.5 (46.4). Adult female ^°: 

 Wing, 127.5-149 (134.3); tail, 53-62.5 (58.6); exposed culmen, 51.5- 

 59.5 (56.3); tarsus, 45-51.5 (49.3); middle toe without claw, 39-43.5 

 (41.2). 



Type locality. — Majagua River, Isle of Pines, West Indies. 



Geographic distribution. — Permanent resident on the Isle of Pines. 



Remarks. — This clapper rail difi'ers from Rallus longirostris limnetis 

 of Puerto Rico in darker, more grayish upper surface; darker lower 

 surface, the sides and flanks more slaty or grayish (less rufescent), the 

 cinnamon of the anterior lower parts decidedly paler; middle of abdo- 

 men with much less wash of cinnamon buff, or entirely white ; and the 

 white bars on sides and flanks somewhat narrower. It is similar to 

 Rallus longirostris corrius of the Bahama Islands but has a longer 

 tarsus and is very much darker above, with the centers of the feathers 

 more blackish, the anterior lower parts, together with the sides, flanks, 

 and crissum, much darker, the flanks with narrower bars, the throat 

 and breast of much darker cinnamon buff. 



Individual variation in this race is great, as in most of the races of 

 clapper rails, and consists chiefly in the darker shade of the head and 

 hind-neck; darker, more blackish upper parts in some specimens; 

 the rufescence of the wing in certain individuals; the extent of the 

 white area on the throat, and of the median white area on the fore- 

 neck and abdomen. In some specimens the median white area on the 

 foreneck is barely interrupted by the gray of the jugulum, though in 

 most specimens this area is thus definitely interrupted. The cinna- 

 mon buff on the chest ranges from almost none to a rather deep suft"u- 

 sion; the width of the white bars on the flanks varies also; th6 lower 

 tail-coverts are sometimes mostly white barred with black, and some- 

 times mostly black barred with white; and the depth of the gray on 

 the jugulum is much darker in some specimens than in the type. 



In normal phase this subspecies is moderately cinnamomeous below 

 and gray above, but there are two phases above, a gray and a brown, 

 and below a light phase, a dark phase, and a gray-breasted phase. 

 In the last-mentioned the lower parts except for the chin and middle 

 throat, flanks, and sides, and crissum are brownish gray, deepest on 

 the jugulum, breast, and sides of the breast, somewhat tinged \\-ith 

 cinnamon buff on the middle of the breast, and much paler but not 

 buffy on the middle of the abdomen. The upper parts in the brown 

 phase are very much like those in the brown phase of Rallus longirostris 



29 Twelve specimens, from the Isle of Pines, 

 so Twelve specimens, from the Isle of Pines. 



