Recently published Ornithological Works. 455 
placing them with or near the Columbse. The position 
assigned to Didus with regard to the Struthiones is still more 
singular, as the two genera Didus and Pezophaps are placed 
between Rhea and Dromceus. 
Nor is this all; the genus Pezophaps is made to include 
Aphanapteryx broeckii (A. imperialis, v. Frauenfeld [cf. Ibis, 
1869, p. 265, et seq.~\), clearly a Ralline bird, and Miserythrus 
leguati , Alph. Milne-Edw. (P. herberti , Schl.), a species of 
the same affinities. 
The richness of the Leyden Museum is well exemplified in 
the fact that the Columbse are represented by no less than 
2309 mounted specimens, skeletons, and crania. In treating 
this group. Professor Schlegel has followed the plan adopted 
in the previous portions of his work. In reading through 
the pages of the present part, we noticed the following points 
which appear worthy of comment:— 
lanthcenas griseogularis , described in this Journal (Walden 
and Layard, Ibis, 1872, p. 104, t. 6) from the island of Negros, 
is here (p. 75) renamed I. luzoniensis. The reason for this 
proposed change is not very apparent; but we suppose that 
the specimen, having been acquired in 1862, had a MS. name 
bestowed upon it, which is now (1873) published for the first 
time. The title must, of course, be consigned from its birth 
to the limbo of synonyms. 
A single specimen of Chlorcenas nigrirostris from Guate¬ 
mala is said to be one of the types of the species. This can 
hardly be the case,, seeing that the bird from which Mr. 
Sclater took his description was obtained by M. Salle in 
Mexico ! 
Peristera lansbergi (p. 139) is evidently Peristera monde¬ 
tour a, Bp., a rare but widely distributed species, being found 
from Mexico to Bolivia (cf. antea, p. 99). 
Peristera pentheria, Bp., is kept separate from P. ruficauda 
of the same author. Having seen the types in Paris, we 
believe them to be the sexes of one species, which should be 
referred to the genus Zenaida and stand as Z. ruficauda. 
Melopelia meloda is united with M. leucoptera ; but we 
believe they are quite distinct though congeneric species. 
