( 342 ) 
No. 911. ? ad., Marnins, 7. vi. 1908.— Wing 68; tail 574 ; bill 17} mm. 
“Tris brown, feet plumbeous, bill black.” 
Agreeing well with examples from Pard and Maranhao. TJ. amazonieus and 
T. cinereiceps Pelz.,* from the Upper Orinoco and Rio Negro, are so very nearly 
allied (the females differ merely in size) that one would naturally expect them to be 
geographical representatives, but both are said to occur in French Guiana.t All the 
examples I have examined from this country were, however, clearly referable to 
T. amazonicus, and the record of 7. cinereiceps appears to be open to doubt. 
205. Thamnophilus doliatus subradiatus Berl. 
{Lanius doliatus Linnaeus, Mus. Adolphi Frid. II. Prodrom. p. 12 (1764.—loc, ign. ; we substitute 
Surinam).] 
Thamnophilus subradiatus Berlepsch, Journ, f. Orn. 1887. p. 17 (Upper Amazonia: the type in Mus. 
H. v. B. is from Iquitos, N.E. Peru). 
T. doliatus subradiatus Hellmayr, Nov. Zool, xiv. 1907. p. 370 (Humaytha). 
No. 430. ¢ ad., Calama, 19. viii. 1907.—Wing 74 ; tail 65 ; bill 19 mm. 
No. 820. ¢ juv., Marmellos, 17. xii. 1907. 
Nos. 621, 670. $2 ad., 8. Isabel, Rio Preto, 4, 16. x. 1907.— Wing 71, 74 ; 
tail 58, 60; bill 184, 19 mm. 
“Tris yellowish white or pale yellow, feet light plumbeous, bill black (3), 
dark grey ($).” 
This form ranges from Northern Peru through Western Brazil to the Rio 
Madeira, where it is found on both sides. 
206. Dysithamnus schistaceus schistaceus (D’Orb.). 
Thamnophilus schistaceus D’Orbigny, Voyage, Oiseaux p. 170 (1838.—Yuracarés, Bolivia); Pelzeln, 
Zur Orn. Bras. ii, 1868. p. 77 (Salto do Girao, Borba). 
Dysithamnus s. schistaceus Hellmayr, Nov. Zool. xiv. 1907. p. 370 (Humaytha, Borba). 
D. capitalis (nec Sclater) Snethlage, Journ. f. Orn. 1908. p. 510 (Villa Braga, Tapajéz— 9, examined 
by me). 
Nos. 22, 41, 52,199. dd ad., Calama, 11, 14, 16. vi, 10. vii. 1907.—Wing 
62—65 ; tail 51—54 ; bill 16—17 mm. 
No. 353. ¢ imm., Calama, 8. viii. 1907.— Wing 63; tail 55; bill 17 mm. 
Nos. 634, 714. dd ad., 8. Isabel, Rio Preto, 7, 17. x. 1907—Wing 65, 62; 
tail 54, 50; bill 17 mm. 
No. 871. ¢ ad., Marmellos, 26. xii. 1907.—Wing 63; tail 50; bill 17 mm. 
No. 633. ? ad., 8. Isabel, 7. x. 1907.—Wing 64; tail 54; bill 164 mm. 
No. 1053. ? ad. Maruins, Machados, 22. vii. 1908.—Wing 65; tail 55; bill 
17 mm. 
“ Tris red, feet plumbeous, bill black, below grey.” 
The series agrees with specimens from the Rio Puris and Tapajéz. Some of 
the adult males are uniform cinereous below, others have the middle of the belly 
variegated with whitish. In most of them the pileam is uniform slate-grey ; but 
two specimens (Nos. 22, 52) approach the newly described D. capitalis squamosus 
Snethl.,¢ from the left bank of the Tocantins, in having the feathers of the cap 
distinctly ceutred with black, though to a lesser degree than in the type kindly lent 
by Miss Snethlage. This form is, of course, more nearly related to D. s. schistaceus 
* Zur Orn. Bras. ii. p. 145 (1868.—Marabitanas and Rio Uaupé, Rio Negro). 
¢ CE. Cat. Birds Brit, Mus. xv. pp. 199, 201. 
t Ornith. Monatster. xv. Oct. 1907. p. 162 (Alcobaga, left bank of Tocantins). 
‘ 
