24 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male—Length (skins), 126-135.5 (130.4); wing, 65-69.5 
(67.7); tail, 48-52 (49.7); culmen, 18-19.5 (18.7); tarsus, 19-20.5 
(19.6); middle toe, 11-13 (11.8).¢ 
Adult female.—Length 121-148 (131); wing, 61.5-69 (65.9); tail, 
45.5-53.5 (50.7); culmen, 17.5-20.5 (20.1); tarsus, 19.5-20.5 (20.1); 
middle toe, 11—12.5 (11.7).% 
Costa Rica (Angostura; Tucurriqui; Jiménez; Volcan de Turrialba; 
Carrillo; La Hondura; Pacuare; Naranjo de Cartago; Guapiles; El 
Hogar; Bonilla; La Balsa; Tuis; La Vijagua; Cariblanco de Sarapiqui; 
El Pozo de Térraba; Pozo del Pit4l) and western Panama (Calobre; 
Calovévora; Bugaba; Volcan de Chiriqui, 2,000-3,000 feet). 
Thamnistes anabatinus (not of Sclater and Salvin) Lawrence, Ann. Lyc. N. Y., 
ix, 1868, 107 (Angostura and Tucurriqui, Costa Rica).—Franrzius, Journ. 
fiir Orn., 1869, 305 (Costa Rica).—Satvin, Proc. Zool. Soc. Lond., 1870, 194 
(Calovévoré and Bugaba, Panamé4; crit.).—Zetepén, Anal. Mus. Nac. Costa 
Rica, i, 1887, 114 (Angostura, Pacuare, and Naranjo, Costa Rica).—SaLvin 
and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 205, part (Costa Rican and 
Panaman localities and references)—CuErriz, Anal. Inst. Fis.-Geog. Costa 
Rica, vi, 1893, 19 (Pozo del Pitél, Costa Rica) —Banes, Proc. New Engl. 
Zool, Club, iii, 1902, 41 (Volcan de Chiriquf, Panam4, 2,000-3,000 ft.). 
[Thamnistes] anabatinus SctaTeR and Satvin, Nom. Av. N eotr., 1878, 70, part.— 
Saaree, Hand-list, iii, 1901, 17, part. 
Thamnistes anabatinus saturatus Ripaway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 
1908, 193 (Bonilla, Costa Rica, 2,600 ft.; coll. U. 8S. Nat. Mus.).—CarriKER, 
Ann. Carnegie Mus., vi, 1910, 605 (Costa Rican range; crit.; habits). 
Genus ABALIUS Cabanis. 
Abalius 6 Capanis, Journ. fiir Orn., ix, July, 1861, 242. (Type, Thamnophilus 
punctatus Cabanis=T. bridgesi Sclater.) 
Medium-sized Formicariide (length about 155 mm.) with tail nearly 
as long as wing, pileum not crested, the adult male black (under parts 
of body more gray or:slate colored) with small white tips to wing- 
coverts and lateral rectrices, adult females slate color or olive streaked 
with whitish. 
Bill about as long as head rather stout, moderately compressed, 
distinctly hooked; exposed culmen about as long as tarsus, distinctly 
ridged, gently curved from near base to beyond middle, where more 
« Ten specimens, all from Costa Rica. Costa Rican specimens compare in measure- 
ments with those from Panamé (Chiriqui, Caribbean slope) as follows: 
Locality. Wing: | en, | Soe | Zee | Male 
MALES, 
Ten adult males from Costa Rica.............222--eeeeeecee nes 67.7 49.7 18.7 19.6 11.8 
Two adult males from Panam4 (Chiriqu{, Caribbean slope)....) 66 51.2 18 20 12 
bo“ Von a, privativum und Baxédc, scheckig, bunt.’’ (Cabanis.) 
