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b. P. tJioracica griseiventris (Berl. & Hart.). 



Hylophilus thnracicus grixeiveiilrix Berlepsch & Hai'tert, Nov. Zool. ix. p. U (1902. — Suapure, Caura 

 River, Venezuela). 



Hylnphibix tliomricus (nee Temminck) Gadow, Cat. Birds Brit. Mus. viii. p. 307 (Bartica Grove, 

 Brit. Guiana) ; Sclater, Ihia, 1881. p. 297 (Cayenne ; Baitica Grove, Brit. Guiana ; Colombia 

 int.) ; Salvin, Ihis, 1885. p. 204 (Bartica Grove, Gamacusa, Brit. Guiana). 



Hab. (Jayenne (trade-skin in Brit. Mns.) ; Surinam (Mus. Trinjr); British 

 Gniana : Bartica Grove, Gamacusa, Rio C'arimang (H. Wliituly). Venezuela : 

 Suapure and La Pricion, Caura River (Klages and Andre coll.). Colombia : 

 Bogota coll. 



Adult. Differs from the preceding form by its much shorter tail, darker, more 

 greenish back, decidedly narrower and duller yellow jugular baud, and by having 

 the middle of the belly pale cinereous (not buffy). Top of the head as in P. t. 

 tkoracica, feathers below the eye and ear-coverts always olive greenish yellow. 

 SS. Wing 56—60; tail 46—49; bill 13—14 mm. 

 ? ?. Wing 52—541 ; tail 44—47 ; bill 12i— 13 mm. 

 Specimens examined : 

 a, b. ? ?, Bartica Grove.— Mus. H. v. Berlepsch. 

 c, of. c?, ?, „ „ Brit. Mns. 



e. ?, Camacnsa. ,, „ 



/. ? , Rio Carimang. „ „ 



ff. ad., Cayenne skin. „ „ 



h. ad., Guiana. — Brown coll., Brit. Mus. 

 L (J ad., Surinam. — Chnnkoo coll., Mus. Tring. 

 .;', /f, I. 6 S , ? , Caura River, including the type. — Mus. Tring. 

 m, 11. Bogota skins. — Mns. Brit, and Berlepsch. 



c. P. tkoracica semicinerea (Scl. & Salv.). 



Hylophilus semicinereus Sclater & Salvin, P.Z.S. Loud. 1867. p. 570. tab. xxx. fig. 2 (Paril) ; Layard 



Ibis, 1873. p. 377 (Para). 

 II. thoracicus (nee Temminck) Pelzeln, Zitr Ornilh. Brasil. ii. 18G8. p. 70 (part. : Salto Girao, 



Borba). 

 Pachysylvia tkoracica semicinerea Hellmayr, Nov. Zool. xiii. 1906. p. 355 (Prata, Parii) ; idem, I.e. 



xiv. 1907. p. 5 (Itaituba, Santarem). 



Hab. Lower Amazons : Pari (Wallace, Layard), Prata, near Pard (Hoffmanns), 

 Itaituba, Tapaj6z (Hoffmanns). Rio Madeira : Borba and Salto Girao (Natterer). 



Adult. Agrees with P. t. griseii-entris in the pale cinereous belly, but differs 

 by the lack of the olive-yellow jugular band and by having the sides of the head 

 (except a narrow olive yellowish ring round the eye) ashy grey. Forehead and 

 crown yellowish olive, occiput and nape pure cinereous, just as in the preceding 

 form. 



SS. Wing 56—59 ; tail 44^—48 ; bill 13—14 mm. 



Specimens examined : 



a. Immature bird (not sexed), ParA. Type of H. semicinereus. — Brit Mus. 



b. S ad.. Para. Layard coll., Brit. Mus. 



c, d. $ $ ad., Prata, Para.^W. Hoffmanns coll., Tring. Mus. 



e. $ ad., Itaituba, Tapajoz. — W. Hoffmanns coll., Tring Mus. 



f. $ jr., Borba, April 10, 1830., Natterer coll., Vienna Mus. 



g. S ad., Salto do Girao, Oct. 9, 1829., Natterer coll., Vienna Mus, 



