MOMOTUS.—BARYPHTHENGUS. 461 
The bird figured by Jardine and Selby under the name of Momotus marti was one 
of Bullock’s Mexican specimens and bought at the sale of his collection. It has, of 
course, nothing to do with MW. marti, Spix. 
5. Momotus castaneiceps. 
Momotus castaneiceps, Gould, P. Z. 8S. 1854, p. 154°; Scl. P. ZS. 1857, p, 2547; Salv. Ibis, 1861, 
p- 854°; Sharpe, Cat. Birds Brit. Mus. xvii. p. 329°. 
M. mexicano similis, capite summo intense castaneo, tectricibus auricularibus elongatis fere omnino nigris, 
plaga malari violacea nulla, macula pectorali nigra majore facile distinguendus. Long. tota circa 14:5, 
ale 5:2, caude rectr. med. 7:5, rectr. lat. 1:5, rostri a rictu 1-6, tarsi 1-1. 
Hab. Guatemata (Gould!, Mus. Liverpool?, Mus. Philad. Ac.*, Mus. Bremen), Valley 
of the Rio Motagua from Guastatoya and La Magdalena to Gualan (0. S. & 
F. D. G.?). 
The late John Gould described this species in 1854 from a specimen sent him from 
Guatemala!, and in 1857 Mr. Sclater stated? that he had seen specimens in the 
Bremen Museum also from Guatemala, and others in the Museum of the Academy of 
Philadelphia and that.of Lord Derby at Liverpool. He also gives Coban in Guatemala, 
on the authority of Delattre, as the precise locality where this bird is found. The 
latter statement we think is very doubtfully correct, as we have never met with a 
single specimen of it in any of the large collections of bird-skins from Coban and its 
neighbourhood which we have examined. 
The only part of Guatemala that we know of where Momotus castaneiceps occurs is 
the valley of the Motagua river, between the narrow gorge near Guastatoya and 
La Magdalena, and the denser forest which commences above Gualan. This includes 
the whole of the plain of Zacapa, which is comparatively open country, large cacti 
and mimosa trees being the characteristic plants. Here M. castaneiceps is by no 
means an uncommon bird, and individuals may frequently be seen along the roadside, 
their habits being precisely like those of JM. lessoni and other well-known members of 
the family. 
Though closely allied to MU. meaicanus, this species is readily distinguished by the 
deeper colour of the chestnut head, and the nearly total absence of the violet-blue 
marks on either side of the black band which runs from the lores to the ear-coverts. 
The black feathers which form the pectoral patch are also larger. 
BARYPHTHENGUS. 
Baryphthengus, Cabanis & Heine, Mus. Hein. ii. p. 114 (1859). 
Urospatha, Salvadori, Atti R. Acc. Se. Tor. iv. p. 179 (1868) ; Sharpe, Cat. Birds Brit. Mus. xvii. 
p- 314. 
The type of this genus is the Tutu of Azara, Baryphonus ruficapillus of Vieillot. 
