THAMNOPHILUS. 197 
T. bridgesi, so far as texture goes; the tail, too, is long; the wings are more rounded, 
resembling those of 7. doliatus; and the tarsi are covered like that type. Thamnophilus 
immaculatus is also referred to this section, but we think it best removed from Tham- 
nophilus altogether as we explain elsewhere. Section E is represented by 7’. pulchellus, 
which just enters our limits. 
a. Majores: rostrum robustum profunde uncinatnm ; ptilosis bicolor, infra alba, 
supra in mare nigra, in femina castanea ; ale rotundate. 
1. Thamnophilus melanocrissus. 
‘Thamnophilus melanurus?, Scl. P. Z. S. 1857, p. 203 (nec Gould)’; 1859, pp. 57°, 883°; Scl. & 
Salv. Ibis, 1859, p. 119 *. 
Thamnophilus medanocrissus, Scl. P. Z. 8S. 1860, p. 252°; Cat. Birds Brit. Mus. xv. p. 184°; Salv. 
Ibis, 1866, p. 203"; Sumichrast, Mem. Bost. Soc. N. H.i. p. 556°; La Nat. v. p. 248°; 
Scl. & Salv. P. Z.S. 1870, p. 837"; Nutting, Pr. U.S. Nat. Mus. vi. p. 405"; Ridgw. Pr. 
U.S. Nat. Mus. xiv. p. 471”. 
Thamnophilus hollandi, Lawr. Ann. Lyc. N. Y. viii. p. 181 (cf. Salv. Ibis, 1874, p. 310) ™. 
Supra nigerrimus ; tectricum alarum apicibus macula dorsali celata et corpore subtus albis ; tibiis, subalaribus et 
remigibus internis in pogonio interno albis ; subcaudalibus nigris ; cauda omnino nigra: rostro et pedibus 
nigris. Long. tota 7:5, alee 3:6, caude rectr. med. 3:0, rectr. lat. 2-4, rostri a rictu 1:2, tarsi 1:3. 
2 supra cum alis, cauda et subcaudalibus castaneis, corpore reliquo subtus albo, rostro et pedibus nigris. 
(Descr. maris et feminze ex Playa Vicente, Mexico. Mus. nostr.) 
Hab. Muxico, Orizaba® and Santecomapam! (Sallé), Playa Vicente (Boucard °, 
Trujillo), hot region of Vera Cruz’, Omealca® (Sumichrast), Teapa (Mrs. H. H. 
Smith); GuatemaLa, Choctum, Chisec (0. 8S. & F. D. G.); Honpuras, Omoa 
(Leyland * *), San Pedro (G. M. Whitely'°), San Pedro Sula (Wittkugel!*); Niva- 
RAGUA, Los Sabalos (Nutting |"), Greytown (Holland 12). 
This species, 7. transandeanus, and T. melanurus are very close allies, and can only 
be distinguished with any certainty by the colour of the under tail-coverts. These 
feathers in J’. melanocrissus are black ; in ZT. transandeanus they have white tips, and 
in 7’. melanurus the exposed portion is wholly white. ‘This is the rule with the colour 
of these feathers in these birds, but it is, as might be expected, not always easy to 
recognize the species. Thus a specimen, apparently adult, from Teapa, has a slight 
white edging to the under tail-coverts, and might, for this reason, be cailed 7. trans- 
andeanus were it not for the locality whence it came. 
The most southern place where 7. melanocrissus has been found is Greytown in 
Nicaragua, whence Mr. Holland sent specimens !*. It is true that these were described 
by Mr. Lawrence as 7. hollandi; but Salvin, who examined the types in 1874 }8, con- 
sidered them to be indistinguishable from 7. melanocrissus, notwithstanding their 
somewhat large size. Mr. Nutting obtained examples in the same country, which were 
referred, without comment, to the northern bird by Mr. Ridgway". Its range north- 
wards from Nicaragua extends along the eastern sea-board, as far as the middle of the 
