684 THE GENUS EOR]\IICARirS RTDGWAY. 



adult, exoei)t the throat, which has the black i'ci)lacc(l by dull brown- 

 ish dusky (almost exactly like color of chest), the feathers of the pos- 

 terior portion tipped with rusty, formiuj^- a narrow, souuAwhat broken, 

 band, much less distinct than in the adult. Upper mandible black, 

 ti])ped with yellowish white; lower, brown, with yellowish-white tip. 



With two specimens from Mexico, four from Guatemala, and one 

 from British Honduras, I am unable to ai)preciate any constant differ- 

 ences of coh)ration according- to locality, except in the case of the last- 

 mentioned example, which is lighter colored (extensively buff'y-whitish) 

 on the middle line of the breast and belly, with the upper parts of an 

 appreciably lighter or clearer tawny-bistre. The darker specimens 

 from Guatemala are quite as dark as the Vera Cruz specimen described 

 above, but all the Guatemala examples are perhaps a little bit brighter 

 in the color of their upper ]>arts than those from Mexico, though the 

 difterence is so very slight that I strongly doubt its constancy in a large 

 series. Certainly there are no variatitms of color in this series which 

 even approximate the paleness of coloration which strongly character- 

 izes JNIr. Lawrence's F. pallid n.s, IVom Yucatan. 



10. Formicarius pallidus Ljnvrcncc. 



FintKiriits vl-'ip^ns pciinif) paUidus Lawi:., Aiiu. N. Y. Aciid. Sri., ii, No. !), May 29, 

 1882, 288 (Yucatan). 

 Formicarius pallidus Lawk., Ann. N. Y. Acail. .Sci. ii, No. 0, 1882. 

 Formicarius moniU(ieriicL., Cat. H. Brit. Mus., xv, 1890; 303, i)urt. — 8AI.^■. and (iou.M., 

 ]5io]. Centr.-Am., Aves, ii, pt. 30, 1892, 233, part. 



Hai?. — Yucatan. 



Sr. Char. — Similar to F. monUhjer Scl., but very nuich ])al('r 

 throughout. 



Adult (Type, ifo. 43543, American Museum of Natural History. Y'uca- 

 tan, G. F. Gaumer). — Above, ])]ain light grayish brown,* deepening on 

 lower rump and upper tail coverts into a more tawny -olive or russet 

 hue; tail rather light olive-brown, with inner webs and terminal por- 

 tion ol" outer webs dusky. Chin, ui)per and middle portions of throat, 

 and thence upward to and surrounding orbits, dull black; lores also 

 blacli, but marked with a central spot of white about 0.15 of an inch 

 long. Sides of head and neck innnediately behind the black area deep 

 cinnamon-rufous, continued in a band across lower throat; chest, sides, 

 and Hanks rather deep l)rownish gray, fading into dull wliite on the 

 belly; under tail coverts light Avood-brown, with indistinct paler shaft 

 streaks, the longer feathers less butfy. Bill black; legs and i'eot horn- 

 color. Length (skin), 0.80; wing, 3.C5; tail, 2.25; exposed culmen, 

 0.85; tarsus, 1.25; middle toe, 0.80. 



Another adult in the collection of Messrs. Salvin and Godnian (Tizi- 

 min, Yucatan, G. F. Gaumer) agrees closely with the tyi)e, but is very 

 slightly deeper olivaceous above, and the rnsty collar across the fore 



*Intfrnic(liatc lictwcon olive and liair-brown, with a slight [\n<n' of Isahidl.-i color. 



