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Show 193 most confused on the upper portion of the ramp. In both adult and immature stages there is considerable variation, but all within fcthe limits of the above diagnosis. List of specimen*. Xat Miu. Xo. 69960 69981 69943 69983 69985 69987 69988 O990 69991 69992 69993 69994 69995 69996 69997 69998 Coll. No. 93 30 31 32 18 25 17 23 27 81 20 33 26 24 29 19 48 48 48 34 Sex and age. - Jnv. ?] ny. - ad. - ad. 9 ad. - jnv. - juv. - ad. - Jnv. djov. tfjav. rfjuv. - ad. 9 ad. - juv. - a d . - pull. - pull. - pull. - pull. Date. ( 1375.) May 10 May 10 May 10 May 10 May 10 Apr. 11 Wing. 15.75 15.50 16.00 15.50 16.40 16.10 15.80 15.75 15.50 15.00 15.50 15.50 15.80 15.50 15.50 15.75 TaU. 11.85 11.85 10.80 10.65 11.65 11.25 10.75 11.00 10.50 10.50 11.00 10.60 11.00 10.60 11.00 11.00 Culmen. 1.30 1.30 1.35 1.30 1.25 1.85 1.30 1.30 1.25 1.30 1.30 1.30 1.25 1.30 1.85 Tarsus. a 70 a 50 a 70 a 60 a es 3.65 a 60 a 50 a 65 a 55 a 65 3.60 a 50 a 60 a 75 3.60 Middle toe. 1.95 1.90 8.00 1.90 8.10 8.00 8.05 1.90 1.90 1.80 2.05 1.95 1.95 2.00 1.90 1.90 Remarks. No. 66989, " Eye brown; legs and cere dead white, with abluUh tinge." No. 66990, " Legs light yellow; cere, etc., aalmon- oolor. This species resembles the P. tharus much more than it does the P. cheriway^ but it is nevertheless so very distinct as not to need actual comparison. The tail is entirely different in its markings, the darker bars being much wider than the light ones ( twice as wide) on the middle feathers, while each is bordered with a narrower zigzag bar of dusky f the lighter markings are moreover light isabella- color, instead of white, as in P. tharus, in which white forms the ground- color, over which cross very narrow bars of grayish- brown. The rump and upper taif-coverts are very indistinctly barred, brown being the prevailing color* while in P. tharus this region is white, narrowly barred with grayish-brown. The ground- color of the lower parts is light isabella- color, with imperfect, more or less sagittate, bars of brown, whereas in P. tharus these portions are black, crossed with narrow, regularly transverse, bars of brownish- white. The throat is light isabella- color, while in P. tharus it is white. Other differences might be mentioned, but they are too numerous. Briefly, the more conspicuous differences between the three species may be contrasted as follows:- P. LUTOSUS.- Scapulars plain dusky brown. Tibia: and flanks light isabella- color, barred with dark brown. Wiug- coverts ( middle and greater) marked with wide bars of brown and pale isabella- color, of equal width. Tail- coverts and rump with broad bars of light isabella-color and grayish- brown. Tail with broad bars of pale isabella- color and grayish- brown, separated by zigzag lines of dusky. Abdomen isabella- color, with small sagittate bars of dark brown. P. THABUS.- Scapulars barred grayish- white and black. Tibice and flanks nearly uniform blackish- brown. Wing- coverts brown, narrowly barred with whitish. Tail- coverts and rump white, with narrow bars of grayish- brown. Tail white, with narrow bars of brownish- gray. Abdomen blackish brown* with transverse bars of whitish. P. CHERIWAY.- Scapulars plain brownish- black. Tibiae and flanks plain black. Wiug- coverts plain blackish. Tail- coverts and rump plain white, without bars. Tail as in P. tharus. Abdomen plain black* * The characters in italics are those common to the adult and young plumage. |