356 MESSRS. P. L. SCLATER AND O. SALVIN [June 28, 
100. MyrmMoTHERULA FULVIVENTRIS, Lawr. /. c. vil. p. 468. 
M. gularis, Sclater, P. Z.8. 1860, p. 294 (part.). 
This species is a close ally of M. gularis of Brazil, but is easily 
distinguishable by the fulvous belly, the male never attaining the 
grey belly of the latter species. The female Myrmotherula obtained 
by Mr. Fraser at Esmeraldas, and doubtfully referred by Sclater, J. ¢., 
to M. gularis, belongs strictly to this species. 
101. MyRMOTHERULA SURINAMENSIS (Gm.); Lawr. J. ¢. vii. 
p- 293. 
Agrees with Sclater’s specimens from Cayenne and Ecuador. 
102. MyrRMOTHERULA MELA&NA, Sclater. 
Formicivora melena, Lawr. 1. c. viil. p. 6. 
The Panama birds seem to agree best with this Bogota form of 
M. axillaris. 
103. Formicivora BoucarDt, Sclater; Lawr. J. ¢. vii. p. 469. 
F, quizensis, Lawy. 1. c. vii. p. 325. 
The Panama specimens agree with the northern form F’. boucardi, 
the Ecuadorian bird (’. consobrina) being slightly different. 
104. RHAMPHOCENUS RUFIVENTRIS, Bp.; Lawr. /. c. viii. p. 6. 
Agrees with Vera Paz specimens. 
105. CeRcoMACRA TYRANNINA, Sclater, Cat. p. 186. 
A single specimen from Panama seems rather smaller than either 
Vera Paz or New Granadian specimens, but is not otherwise different. 
The northern specimens of this species are rather darker ; and in this 
respect the Panama bird agrees best with southern specimens. 
106. PyrigLENA MACULICAUDIS, Sclater, Cat. p. 185; Lawr. U. c. 
Vii. p. 325. 
Agrees with Sclater’s examples of this bird. The female is much 
paler below than that of P. serva. 
107. GyMNOCICHLA NUDICEPS (Cassin) ; Sclater, P. Z. S. 1858, 
p- 274. 
Pithys rufigularis, Lawr.( @ ) 1. c. vii. p. 293. 
Myrmeciza ferruginea, Lawr. ibid. p. 470. 
The collection contains specimens of both sexes of this curious 
bird, which is certainly closely allied to Pyriglena. The female is 
much like the females of the smaller section of that group. It may 
be characterized— 
Q. Rufescenti-fusca, alarum tectricum marginibus et corpore 
subtus ferrugineo-rufis : macula dorsali celata alba. 
The male is described in Sclater’s ‘Synopsis of Ant-Thrushes,’ 
