110 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(Tucurrfqui). — Frantzius, Journ. fiir Orn., 1869, 305 (Costa Rica). — Sclater, 

 Cat. Birds Brit. Mus., xv, 1890, 280. — Salvin and Godman, Biol. Centr.-Am., 

 Aves, ii, 1892, 230, pi. 51, fig. 1. — Carriker, Ann. Carnegie Mus., vi, 1910, 

 617 (Caribbean slope, 1,000-2,500 ft., Costa Rica; ciit. ; habits). 



[Myrmeciza] Ixmosticta Sclater and Salvin, Nom. Av. Neotr., 1873, 74. 



Myrmeciza Ixmosticta Isemosticta Hellmayr, Novit. ZooL, xiii, 1906, 343 (crit.). 



[Dnjmophila] Isemosticta Sharpe, Hand-list, iii, 1901, 34. 



Drymophila Isemosticta Carriker, Ann. Carnegie Mus., v, 1908, 9, in text. 



Myrmeciza stictoptera Lawrence, Ann. Lye. Nat. Hist. N. Y., viii, 1867, 132 

 (Angostura, Costa Rica; coll. U. S. Nat. Mus.); ix, 1868, 109 (do.).— Frant- 

 zius, Journ. fur Orn., 1869, 306 (Costa Rica).— Cherrie, Proc. U. S. Nat. 

 Mus., xiv, 1891, 532 (San Carlos, Costa Rica; crit.). — Salvin and Godman, 

 Biol. Centr.-Am., Aves, ii, 1892, 230. 



[Drymophila] stictoptera Sharpe, Hand-list, iii, 1901, 34. 



Drymophila stictoptera Carriker, Ann. Carnegie Mus., v, 1908, 9 (crit.). 



MYRMECIZA CASSINI (Ridgway). 



CASSIN'S ANTBIRD. 



Adult male. — Head and neck, all round, uniform slate-black or 

 blackish slate; back, scapulars, rump, upper tail-coverts, tail, and 

 secondaries plain bright mummy brown or mars brown; edge of 

 wing white; lesser Aving-coverts brownish black or blackish brown, 

 each with a conspicuous apical spot of white;'* alula dusky brown, 

 the outermost feather broadly edged with v.hite; primary-coverts 

 uniform dusky brown; primaries grayish brown basally passing ter- 

 minally into light olive-brown, the outermost edged with wdiite; 

 under parts, except chin, throat, and under tail-coverts, plam slate- 

 gray, somewhat paler posteriorly, where slightly tinged with fulvous; 

 under tail-coverts light mummy brown; bill black; legs and feet 

 light yellowish gray (in dried skin); wing, 69; tail, 42; culmen (bill 

 defective); tarsus, 29; middle toe, 18.^ 



Adult female?. — Upper parts as in the adult male, but brown of 

 back, etc., much deeper (chestnut-brown); chin and most of throat 

 uniform slate color; median portion of lower throat, chest, and 

 breast chestnut, the remainmg under parts slightl}^ paler and duller 

 (more russet) ; wing, 64; tail, 39; culmen (bill defective); tarsus, 26; 

 middle toe, IS.*' 



Immature male.^ — Similar to the supposed adult female, as de- 

 scribed above, but brown of upper parts lighter and less castaneous 

 (deeper, however, than m the adult male described), and general 

 color of under parts much lighter (dull cinnamon-rufous on chest 



« In the single specimen that I have been able to examine the middle and greater 

 coverts are wanting. 



b One specimen (the type). 



c One specimen, from Turbo, Colombia. 



d Described from no. 150,920, U. S. Nat. Mus., Cascajdl (Cocl6), Pananul; Heyde. 



