Page:Birds of North and Middle America partV Ridgway.djvu/150

Adult (sex not determined). — Length (skin), 173.5; wing, 93; tail, 55; culmen, 22; tarsus, 31; middle toe, 20.

Yucatan (Tizimin).

Furnarius pallidus Lawrence, Ann. N. Y. Acad. Sci., ii, no. 9, May 29, 1882, 288 (Yucatan; coll. G. N. Lawrence).

Formicarius pallidus Lawrence, Ann. N. Y. Acad. Sci., ii, no. 9, 1882 (index). — Boucard, Proc. Zool. Soc. Lond., 1883, 450 (Tizimin, Yucatan; crit.). — Reichenow and Schalow, Journ. für Orn., 1884, 388 (reprint of orig. descr.). — Ridgway, Proc. U. S. Nat. Mus., xvi, 1893, 684 (monogr.).

[Formicarius] pallidus Sharpe, Hand-list, iii, 1901, 39.

F[ormicarius] m[oniliger] pallidus Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 1908, 194, in text.

[Myrmornis] pallidus Heine and Reichenow, Nomencl. Mus. Hein. Orn., 1890, 124.

Formicarius moniliger (not of Sclater, 1856) Sclater, Cat. Birds Brit. Mus., xv, 1890, 303, part (Tizimin, Yucatan). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 233, part (Tizimin).

FORMICARIUS MONILIGER UMBROSUS (Ridgway).

NICARAGUAN ANTTHRUSH.

Similar to F. m. moniliger but without any chestnut across foreneck, the black of throat giving way, more or less abruptly, on chest to dull slate color or sooty gray; under tail-coverts darker, more castaneous, brown; terminal portion of auricular region, together with supra- auricular region (sides of occiput) and sides of neck, varying from chestnut to vinaceous-cinnamon.

Young. — Much like adults but malar region, chin, and throat dull whitish or buffy, transversely mottled or barred with dusky, or else uniform dull sooty blackish; whitish abdominal area transversely spotted or clouded with grayish dusky.

Adult male. — Length (skins), 158-180 (164); wing, 86-93 (90.2); tail, 49.5-57 (53.7); culmen, 19-23.5 (21.4); tarsus, 31-36 (33.5); middle toe, 18-20.5 (19.1).^[1]

Adult female. — Length (skins), 146-170 (161); wing, 86-91.5 (88.3); tail, 48-55 (51.7); culmen, 19-22 (20.3); tarsus, 31.5-33.5 (32.3); middle toe, 17.5-20 (18.8).^[2]

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1. Fourteen specimens.
2. Twelve specimens.

   Locality.	Wing.	Tall.	Culmen.	Tarsus.	Middle toe.
   males.
   Ten adult males from eastern Costa Rica	90.6	54.4	20.9	33.9	19.2
   Four ad nit males from Nicaragua	89	52.1	22.5	32.6	18.9
   females.
   Ten adult females from eastern Costa Rica	88	51.4	20.1	29	18.7
   Two adult females from Nicaragua	89.7	53	21.3	32.3	19.3