( 345 ) 



Agrees well with skins from British Guiana. Natterer collected an adult 

 bird at Borlia, and Dr. Rushy procured specimens near the falls of the Rio Madeira 

 in Bolivia. 



I have shown in Journ. f. Ornith. 1002, pp. 63-5, 69, and in Nov, Zool.xm. 

 1906. p. 4, that T. j>. pkaeopygoides Seeb. is a well-characterised form, and certainly 

 not the " winter plumage " of T. p. pkaeopygus, as supposed by Sharpe.* 



3. Heleodytes turdinus hypostictus (Gould). 



[Opetiorynchos turdinus Wied, Reise Brasil. ii. p. 148 (1821. — Rio Doce, Espiritu Santo ; Rio Catol£, 



Bahia. — Cfr. my revision of Spix' types, p. 626).] 

 Campylorhynchus hypostictus Gould, P. Z. S. 1855. p. 08 (Rio Ucayali, Eastern Peru). 



Nos. 983, 982. S ¥ juv., Humaytha, 24. vi. 06. " Iris greyish brown, feet 

 grey, bill blackish, below greyish white." 



This is the Amazonian representative of H. t. turdinus (Wied), from which it 

 differs by its generally smaller size and by having the spots on the lower parts 

 more numerous and distinctly guttiform, while they are heart-shaped in the Basl 

 Brazilian race. Within Brazilian limits it was first recorded from Santarem, by 

 Riker and Chapman.f Professor von Ihering received a specimen from the Rio 

 Jurna f ; and Natterer collected two ? ? near Borba on the Rio Madeira, which 

 were erroneously determined as C. variegatus. § 



4. Thryophilus albipectus subsp. 



Cf. supra, p. 3. 



No. 986. ? ad. in very worn plumage, Humaytha, 25. vii. 06. " Iris brown, 

 feet bluish black, bill black."— Wing 65 ; tail 43 ; bill 19 mm. 



This specimen agrees in size with our series from Peru (form e of my review, 

 I.e.), but is so horribly worn on the under parts that their real coloration cannot 

 even be guessed. Further material is required to settle the question to which 

 form the birds from the Rio Madeira should be referred. 



5. Thryothorus genibarbis juruanus Ihering. 



[Thryothorus genibarbis Swainson, Anim. in Menag. p. 322 (1838. — Brazil).] 



Thryothorus genibarbis juruanus Ihering, Revist. Mus. l\iul. vi. p. 431 (1905. — Rio Jurua, 

 N.W. Brazil). 



No. 1015. 3 ad., Humaytha, 29. vii. 06. " Iris dark red." — Wing 68 ; tail 58 ; 

 bill ISf mm. 



No. 988. ¥ jr., Hnmaytha, 25. vii. 06. "Iris brown." — Wing 63; tail 60; 

 bill IS mm. 



No. 1051. ? juv., Humaytha, 4. viii. 06 "Iris greyish brown." — Wing 68; 

 tail G2A ; bill 19 mm. 



These specimens belong undoubtedly to the form recently separated by Professor 

 von Ihering. Although the characters put forward in the original description do 

 not hold good, there are other differences by which the Amazonian race may lie 

 distinguished from T. g. genibarbis of Eastern Brazil. The wings are decidedly 

 longer, and the under parts paler, the sides of the belly alone being of a dull 

 fulvescent brown. In true T. g. genibarbis, of which the Tring Museum possesses 



* Mmogr. Thrushet, i. p. 214. t Rerist. Xus. Paid. vi. 1905. p. 430. 



t Auk, 1890. p. 137. § l'elzeln, Zur Ornith. Bratil. i. 1867, p. 49. 



