( 287 ) 
Type locality : Ourumee, British Guiana. 
Specimens examined : 
Wing. Tail. Bill 
1. Mus. Brit. gd ad., Ourumee, Oct. 31, 1890. 
Type of species . ; : : , . 63 30 124. mm. 
2, Mus. Brit. ¢ ad., Onrumee, Oct. 9, 1890 . 65 35 13 
3. Mus. Brit. ? ad., Ourumee, Oct. 31,1890 . 59 304 13 a 
4. Mus. Tring. ¢ ad., Ourumee, Sept. 29,1890 . 58 30 12 a 
5-9. Mus. Tring. ¢ddad., Surinam. : . 60—65 30—35 12—13 ,, 
10. Mas. Tring. 3 imm., Surinam : : . 64} 32 13 es 
11,12. Mus. Tring. ?? ad., Sarinam . fetal 32,34 12 i 
13-16. Mus. Tring. 6d imm., Caura Valley, Venez. 613—64 33—36 12—18 ,, 
17. Mus. Monac. ¢ad., Caura Valley, Venez. . 63 37 12 ‘“ 
18, Mus. Vindob. dad, Serra Carauman, Rio 
Branco, June 7, 1832 . ‘ , . . 65 344 12 is 
Adult. Top of the head lighter than in P. s. senex, slate-grey, sides of the head 
also averaging paler grey. Males with a large white coronal patch, females without 
or with very little white. Back clear rafescent or russet-brown, 
Obs. Nos. 1, 3, and 4 have the abdomen distinctly paler, sulphur-yellow, than 
the rest of the belly, which is bright ochraceous, while in a series from Venezuela 
and in the bird from the Rio Branco all the under surface (except the white throat) 
is uniform deep ochraceous (like P. s. senex). As, however, No. 2 (Ourumee) and 
the examples from Sarinam agree with the Venezuelan ones, this slight difference 
must be purely individaal. Notwithstanding our former affirmation (Bull. B. O. C. 
xii. p. 64), Natterer’s male from the Rio Branco undoubtedly belongs to P. s. 
griseiceps ; it is perfectly identical with some of the Caura specimens. 
The colour of the back is rather variable in my series. Some examples (e.g. 
Nos. 1, 3, etc.) are indeed lighter than P. s. senex, but others (Nos. 4, 13-15) 
match them exactly, and No. 17 (Caura) is even darker and more rafescent brown. 
(c) Platyrinchus senex nattereri Hart. & Hellm. 
Hab. Central Brazil, Rio Madeira, east bank: Salto do Girao (Natterer), 
Calama (Hoffmanns), Maruins on the Rio Machados (Hoffmanns). 
Type locality: Salto do Girao. 
Specimens examined : vide supra. 
Adult. Similar to P. s. griseiceps in having the head slate-grey, but differing 
by the much paler, greenish olive-brown colour of the back. 
91. Platyrinchus coronatus coronatus Scl. 
Platyrhynchus coronatus Sclater, Proc. Zool. Soc. Lond. xxvi. 1858. p. 71 (1858.—Rio Napo, Eastern 
Ecuador). 
P. c. coronatus Hellmayr, Nov. Zool. xiv, 1907. p. 354 (Humaytha, Paraiso). 
Nos. 46, 161, 304, 456. dd ad, Calama, 16. vi., 3, 30. vii, 26. viii. 1907. 
“Tris brown, feet grey, bill black, below grey.”"—Wing 55—58} ; tail 25—28 ; bill 
12 mm. 
No, 5. ? ad., Calama, 8. vi. 1907. Soft parts as above.—Wing 54; tail 24; 
bill 114 mm. 
Nos. 898, 924. ¢dad., Marnins, 2, 12. vi. 1908.— Wing 54, 58 ; tail 25, 27 ; 
bill.113 mm. ; 
No, 891. ¢ imm., Maruins, 31. v. 1908.— Wing 54 ; tail 24; bill 11 mm, 
