AVES. „ J07 
M. Jiavtivertex, lia\dng the first and third remiges of equal length and a 
large pale rusty-yellow spot on the head {op. cit. pp. 98-101). 
M. nigrifrons, with the forehead and middle of the crown black and the 
bill much curved downwards {op. cit. pp. 101-104). 
Ohs. — Mr. Sclater has some remarks on this paper (Ibis, 1866, pp. 66-69), 
wherein he identifies M. Jlavivertex, above-mentioned, with M. rufinuchay 
Lafresnaye, and suspects M. nigrifrons to be the same as Ptyonura frontalisy 
Burmeister. 
Antcretes cristatellus is a new species from Hayti. T. Salvadori, Atti Soc. 
Ital. Sc. Nat. 4 Sept. 1864. 
Elainea frantzii is described as a new species from Costa Bica, in its upper 
plumage much like E. subpagana, but having the throat and breast dull 
greenish-olive and the abdomen pale yellow. G. N. Lawrence, Ann. Lyc. 
N. Y. 1865, pp. 173, 174. 
Elainea chiriquensis and E. semiflava are described as new species from 
Chiriqui, New Granada; the former is somewhat like E. suhpaganay but 
smaller and of a duller olive above, the breast and the sides cinereous, and the 
abdomen duller and paler. Idem, op. cit. pp. 177, 178. 
Rhynchocyclm cerviniventris is a new species from Brazil. T. Salvadori, 
Atti Soc. Ital. Sc. Nat. 4 Sept. 1864. 
Myiohius rufescens is described as a new species from Brazil. Very like 
M. ncemus, but smaller. Idem, op. dt. 
Pyrocephalus mexicanus perhaps not distinct from P. ruhineus. Idem, 
op. cit, 
Mitrepliorus aurantiiventris is a new species from Costa Rica, much re- 
sembling M. plucocercus, but smaller and above greener, and with the abdo- 
men and sides bright orange-yellow. G. N. Lawrence, Ann. Lyc. N. Y. 
1866, p. 174. 
Empidonax pygmcms is indicated as a new species from Arizona. E. 
Coues, Ibis, 1866, p. 637. (Renamed Mitrepliorus polkscens, Idem, P. Ac. 
Phil. Jan. 1866.) 
Empidonax Jlavescens, from Costa Rica, is described as new species not 
much like any other of the genus. G. N. Lawrence, Ann. Lyc. N. York, 
1866, p. 133. 
Contiypus luguhris is described as a new species from Costa Rica, somewhat 
resembling C. richardsoni, but very much darker as well as larger. G. N. 
Lawrence, Ann. Lyc. N. York, 1866, p. 134. 
Myiarchus venezuelensis\% descril3ed as anew species from Venezuela, nearly 
allied to M. panamensis, but is smaller and has bright rufous margins to the 
rectrices, besides other points of difference. More perfect specimens of the 
last-named bird have also been received, enabling the author to give further 
details of its plumage. G. N. Lawrence, Proc. Acad. Philad. 1866, p. 38. 
DiCRURIDiE. 
Dicrurus waldeni is a new species from Mayotte. In the form of the bill 
and in the texture and colour of the plumage it resembles D. forjicatus from 
Madagascar and D. cristatus from Zambesia, but it has no crest. In the form 
of the tail it resembles the Asiatic group of which D. macrocercm is the 
