96 TYRANNIDZ. 
with spots of two shades of brown, principally towards the larger end, where they form 
a ring. 
9. Myiarchus nigriceps. 
Myiarchus nigriceps, Scl. P. Z. S. 1860, p. 68°; Cat. Birds Brit. Mus. xiv. p. 258°; Lawr. Ann. 
Lye. N. Y. vii. p. 827 (?)°; Scl. & Salv. P. Z.S. 1864, p. 360°; Tacz. Orn. Pér. ii. p. 324°. 
Myiarchus brnnneiceps, Lawr. Ann. Lyc. N. Y. vii. p. 827°. 
M. lawrencii persimilis, tectricibus alarum haud rufo limbatis distinguendus. 
Ay. juv. primariis plus minusve rufo marginatis. 
- Hab. Panama, Lion Hill (/‘Zeannan? 4 *).—Soutn America, Colombia, Ecuador, Peru5, 
Venezuela, Guiana, and Amazons valley 2. 
We believe that this bird, when adult, may always be distinguished from MM. law- 
rencit by the absence of the rufous edgings to the quill-feathers. The crown, too, is 
more intensely black, but this is a very variable feature in the allied form. The 
boundary between the two birds seems fairly definite: MZ. nigriceps just enters our 
fauna as far as the line of the Panama Railway; a little further westward U/. law- 
rencit takes its place. 
M. nigriceps was first described from specimens obtained by Fraser at Pallatanga in 
Ecuador, and it has since been discovered to exist over a wide area of northern South 
America from the valley of the Amazons to the Caribbean sea. In Peru Stolzmann speaks 
of it as common at Tambillo, frequenting the edges of the forests and in other places 
even at an elevation of 9500 feet at Cutervo. 
b’. Rostrum latum, breviusculum, pectus distincte flammulatum. 
10. Myiarchus flammulatus. (Tab. XXXVII. fig. 2.) 
Myiarchus flammulatus, Lawr. Ann. Lyc. N. Y. xi. p. 71°; Bull. U. S. Nat. Mus. no. 4, p. 28°; 
Ridgw. Pr. Biol. Soc. Wash. i. p. 93°; Man. N. Am. B. p. 335%; Scl. Cat. Birds Brit. 
Mus. xiv. p. 263°. 
Supra olivaceus, capite vix obscuriore ; alis fuscescentibus, tectricibus pallide rufo terminatis, remigibus et 
secundariis externis eodem colore limbatis, secundariis internis sordide albo terminatis ; cauda fuscescente 
stricte extrorsum limbata: subtus usque ad pectus albidi-cinereo flammulatus ; abdomine pallide sulphureo, 
subalaribus ochraceo tinctis : rostro et pedibus nigricantibus. Long. tota 6°3, ale 3-2, caude 3-0, tarsi 0°7, 
rostri a rictu 08. (Descr. exempl. ex Tehuantepec, Mexico. Mus. nostr.) 
Hab. Mexico, Mazatlan (fide Ridgway *), Cacoprieto, Tehuantepec (Swmichrast 1?°). 
A very distinct species, doubtfully referable to Mytarchus. The bill is much 
shorter than in typical Mytarchus, and broader in comparison with its length. We 
only know of its occurrence on the Isthmus of Tehuantepec, where Sumichrast discovered 
it. Mr. Ridgway, however, extends its range to Mazatlan. 
