B28 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



hh. Smaller (wing 73.5-79.5, tail 54.5-57.2 mm.); rump and upper 

 tail-coverts uniform pale gray; interscapular region never (?) 

 wholly l)lack, often wilh little black, sometimes wholly gray. 



(Yucatan.) Pachyrhamphus major itzensis, adult male (p. S3G) 



ee. Forehead with a narrow but very distinct anterior marginal band of pale 

 gray (confluent with a supraloral stripe of the same color). 

 /. Interscapular region partly black ; under parts uniform pale gray. (Ven- 

 ezuela, Guiana, and Amazon Valley to southeastern Brazil.) 



Pachyrhamphus atricapillus, adult male (extralimital )o 

 ff. Interscapular region wholly uniform gray; under parts white medially 

 (shaded with pale gray on chest). (Nicaragua to Ecuador and Ven- 

 ezuela.). .Pachyrhamphus albo-griseus albo-griseus, adult male (p. 836) 

 cc. Tail gray (like back, etc.), the rectrices with a very narrow (if any) terminal 

 margin of white; back wholly uniform gray; middle wing-coverts gray 

 (sometimes narrowly margined with white). (Panama to Guiana and Lower 



Amazon Valley.) Pachyrhamphus cinereus, adult male (p. 838) 



hh. Sides of head and neck "olive-yellow; under parts barred (more or less distinctly) 

 with dusky. (Costa Rica to Venezuela and Ecuador. ) 



Pachyrhamphus versicolor, adult male (p. 843) 

 aa. Back rufous-tawny, rufous-brown, olive, or olive-green; under parts buff, ochra- 

 ceous or yellowish. 

 h. Tail wholly rufous-brown or rufous-tawny, like rest of upper parts, 

 c. Nuchal collar and sides of occiput gray. (Venezuela to southern Brazil.) 



Pachyrhamphus rufus, adult male and female (extralimital) ^ 

 cc. No gray on head. 



0'l[Lanius\ atricapilius Gmelin, Syst. Nat., i, pt. i, 1788, 302 (Surinam; based on 

 Merrem, Beytr., ii, 30, pi. 10). — B[athmidurus] atricajnllvs Cabanis, in Wiegmann's 

 Archiv. fiir Natm-g., 1847, pt. i, 245. — Pachyrhamphus atricapillus Sclater, Cat. Am. 

 Birds, 1862, 242; Cat. Birds Brit. Mus., xiv, 1888, U7.— T[odus] marginatus Lichten- 

 stein, Verz. Doubl., 1823, 51 (Bahia, Brazil; coll. Berlin Mus.; =adult female). — 

 Muscipeta marginata Maximilian, Beitr. Naturg. Bras., iii, pt. ii, 1831, 909 (Brazil; 

 type now in coll. Am. Mus. N. H.). — T[odus] viarginatus Lichtenstein, Verz. Doubl., 

 1823, 51 (Bahia). — Pachyrhynchus marginatus D'Orbigny, Voy. Amer. Merid., Ois., 

 1839, 303, pi. 31. — P[achyrhamphus] marginatus Hartlaub, Syst. Verz., 1844, 50 

 (Brazil). — Pachyrhamphus viarginatus Sclater, Proc. Zool. Soc. Loud., 1857, 77. — 

 [Psaris] inarginatus Bonaparte, Consp. Av., i, 1850, 181 (Brazil). — Bathmidurus mar- 

 ginatus Burmeister, Syst. Ueb. Th. Bras., ii, 1856, 451. — P[achyrhamphus] atricapillus 

 marginatus Berlepsch, Journ. fiir Orn., xxxvii, July, 1889, 303, in text; Hartert, Kat. 

 Vogelsaml. Senckenb., 1901, 105 (Brazil). — Pachyrhynchus sivainsonii Jardine and 

 Selby, Illustr. Oi'u., ii, 1829, Add., no. 6.— Pachyrhynchus alhifrons Swainson, Anim. 

 inMenag., 1838, 289. 



bMuscicapa rufa Boddaert, Tabl. PL EnL, 1783, 27 (Cayenne; based on Gobe- 

 mouche roux de Cayenne Daubenton, PL EnL, pi. 453, fig. 1). — Pachyrhamphus rufus 

 Berlepsch, Journ. fur Orn., 1873, 264; Sclater, Cat. Birds Brit. Mus., xiv, 1888, 343.— 

 \^Muscicapa'\ rufescens Gmelin, Syst. Nat., i, pt. ii, 1788, 932 (based on Gohe-mouche roux 

 deCayenne Buffon, IJjst. Nat. Ois., iv, 549; Pi. EnL, 453, fig. 1). — Platyrhynchus rufescens 

 Spix. Av. Bras., ii, 1825, 34, pi. 46, fig. 2. — Pachyrhamphus rufescens Sclater, Proc. 

 Zool. Soc. Lond., 1857, 79. — Tityra castanea Jardine and Selby, Illustr. Orn., i, pt. i, 

 Dec, 1826, pi. 10, fig. 2. — Muscipeta aurantia Maximilian, Beitr. Naturg. Bras., iii, pt. ii, 

 1831, 911 (Brazil; type now in coll. Am. Mus. N. H.). — Pachyrhynchus ruficeps Swain- 

 son, Anim. in Menag., Jan. 1, 1838, 288 (Brazd). — {'^.) Pachyrhamphus intermedius 

 Berlepsch, Orn. CentralbL, 1879, 63 (San Esteban and Puerto Cabello, Venezuela; 

 coll. H. von Berlepsch). — Hadrastomus borellianus Bertoni, Av. Nuev. Parag., 1901, 108. 



