( 36 ) 

 lv!4. Cnipolegus pusillus Scl. & Salv. 



CnqjokgM pueUhis Scl. & Salv., A'omaiH. on. motr. (1873) p. 158 (typ. ex Amazon inf.). 



Perico : (? ad., <J (not quite adnit), 25. ix. '98 (nos. 11231, 11232 Cherrie coll.) 

 " Iris seal ; bill slate, blackish at extreme top." 



AI. 60i, caud. 62|, culm. lOJ, tars. 16i mm. 



125. Xenopsaris albinucha (Burm.j. (PL XII., tig. 1.) 



Pachyrhamphus albinucha Burm., P.Z.S. 1868 p. 635, descr. orig. (Rio de la Plata, near Buenos 



Ayres) 

 Xenvpsaris albmucka Ridgw.. Proc. U. S. Nat. Mus. XIV. (1891) pp. 479, 480 (ex Buim). 

 Prospoielm alhimicha Cab., J.f.O. 1892 pp. 126, 127 (ex Burm.). 

 Xenopmrh albinucha, Scl., P.Z.S. 1893 p. 161!, pi. VII. 



Altagracia : 6 ad. 12. i., 4 cJc? jnv. 6. xi. '97 ; (5, 7. i. '98, 3 ? ? o. xi., 20, 27. 

 xii. '97, 7. i. "08. 



(Jaicara: S ad. 7. iv., SS ad. 31. iii. '98: S 9. xi. '97, ? ? 17, 26, 31. iii., 

 8. iv. '98. " Iris blacldsb ; feet slate ; bill black above, plumbeous below." 



(Nos. 849U, 8552, 8820, 8842, 9174, 9409, 9530, 9566, 9567, 9643, 9848, 9898, 

 10609, 10571, 10576, 10577, 10644, 10655 Cherrie coll.) 



c?(J ad. al. 61, 60. cand. 55, 53. culm. 12i, lnj. tars. 13J, 13 mm. 



¥ ? „ 62, 60i. „ 55^, 54. „ 10|, 10|. „ 13i 



La Pricion, Caura: ? 17. ii. 1901 (E. Andr^). 



It is a most singular fact that this species, which was discovered by Burmeister 

 on the banks of the Rio de la Plata near Buenos Ayres— where it is apparently a 

 rare bird— now reappears on the Orinoco river. On the Orinoco river it is apparently 

 a common species, Mr. Cherrie having sent us a fine series of specimens of all 

 diflferent stages of age. Perhaps A', albinucha will prove to be a bird inhabiting 

 the sedges of the banks of many of the large rivers of South America, and might 

 be discovered likewise on the banks of the Amazon. 



Young " males " and birds marked '\fenmlei" have the black cap mixed more 

 or less with rusty brown feathers, and have the back of a darker grey suffused with 

 olivaceous brown, while the characteristic white nuchal band is either absent or 

 but slightly indicated. A very young male has whitish tips to the feathers of 

 the back and jiale rusty ones to those of the pileum. 



Birds in fresh plumage show the abdomen more or less suffused with sulphur- 

 yellow, which is scarcely to be seen on the adult mak from Quiribana de Caicara of 

 31 March, 1898. 



X. albimicha has been removed by Dr. Cabanis, quite correctly, we think, from 

 the Cotingidae to the Tyrannidae. We have placed it in the neighbourhood of 

 Cnipolegus, allowing at the same time that there are some affinities with 

 Serpophaga and Stigmatura on the one side and Sublegatus and Empidagra on the 

 other side. 



126. Machetornis rixosa (Vieill.). 



Tijratmm ri.roms Vieill., Nuuv. Did. xxxv. (1819) p. 85 (ex Azara— Paraguay). 



Altagracia : 3 <J(J ad. 29. xi., 3, 6, 16. xii. '97 ; 4 ? ? 14. xii. '97, 3, 19. i. '98 ; 

 15. xi., S jnv. 4. xi. (<? ?) 2, 10. xii. '97. " Iris satnrn-red ; feet blackish : bill 

 Idack." " Iris chocolate. Iris dusky." 



