BIRDS OF NORTH AND MIDDLE AMERICA 



273 



dark sooty brown, but this broken on head and neck by streaks of 

 buff and on back, scapulars, wing coverts, and rump by subbasal 

 spots and edgings of the same; remiges as in adults; upper tail coverts 

 irregularly barred with sooty brown and ochraceous-buff ; tail grayish 

 brown, washed with hoary gray on middle feathers, crossed by numer- 

 ous bars of dusky (narrower than in adult), which become obsolete 

 toward the base of the tail, the last one much the broadest, and nar- 

 rowly tipped with pale brown or dirty brownish white; the inner webs 

 of the rectrices light pmkish buff, shaded with grayish brown and 

 marked with irregular narrow dusky bars, rather more distinct than 

 those on outer webs. Underparts deep ochraceous-buff, marked with 

 shaft streaks and tear-shaped spots of dark sooty brown, largest on 

 belly and flanks, the thighs, under tail coverts, and under wing coverts 

 transversely spotted with the same; under surface of primaries, ante- 

 rior to their emarginations, pale buff, or buffy white, almost immacu- 

 late. 



Natal down. — White. 



Adult male.—Wing 365-432 (388); tail 191-235 (208.5); culmen 

 from cere 26-32.5 (27.5); tarsus 70-85 (74.4); middle toe without claw 

 41-56 (44.1 mm.)." 



Adult female.— Wing 410-435 (421); tail 222-237 (231); culmen 

 from cere 30-32 (31); tarsus 74-89 (81.2); middle toe without claw 

 44-53 (47.9 mm.)." 



" Twenty-two males, 15 females, as follows (ex Swarth, Occ. Papers California 

 Acad. Sci., xviii, 1931, 51): 



Locality 



Jervis Island... 

 Duncan Island. 



Indefatigable Island _ 

 Barrington Island... 

 Hood Island 



B Indloe Island 



Jervis Island 



Duncan Island 



Indefatigable Island . 



Barrington Island.. . 



Sex 



Num- 

 ber of 

 speci- 

 mens 



Wing 



Mm. 



385 



377-395 



(386. 3) 



365-393 



(379. 5) 



385-395 



(389. 7) 



410-432 



(420) 



435 



420 



412-415 



410-433 



(419. 7) 



435 



Tail 



Mm. 



200 



191-210 



(199. 7) 



205-215 



(207. 1) 



207-212 



(209. 5) 



217-235 



(223) 



243 



225 



222-223 



22.5-237 



(231.9) 



233 



Culmen 



Tarsus 



Mm. 



27.5 



27-28 



(27. 3) 



26-28 



(26. 9) 



27-27. 5 



(27. 4) 



28. 5-32. 5 



(30. 2) 



30 



31 



31. 5-32 



30-32 



(30. 9) 



32 



Middle 

 toe 



Mm. 



79 

 72-75 

 (73. 7) 

 70-76 

 (72. 4) 

 75-76 

 (75. 5) 

 74-85 

 (SO. 3) 



80 



81 

 81-82 

 74-89 

 (81. 1) 



84 



Mm. 

 44 

 42-46 

 (44) 

 41-44 

 (42. 9) 

 42-44 

 (43. 5) 

 46-56 

 (49. 3) 

 47 

 50 



44-53 



(47. 6) 



50 



It may be, as pointed out by Swarth, that the birds of Hood Island are a recog- 

 nizable race, based on larger size. Swarth had in addition three young males 

 from there, which agreed with the adults in size. It is possible, however, that the 

 birds may be wrongly sexed. 



