Recently published Ornithological Works. 87 
of their kind, and in the letterpress the short sketches of the 
general distribution of each species seem to fulfil their pur¬ 
pose. Some errors in the authorities for the specific names 
are corrected in the table of contents on the wrapper. With 
regard to the species which Lord Lilford terms, doubtless to 
distinguish it from a congener, the Pied Rock-Thrush (. Mon- 
ticola saocatilh), we are somewhat surprised to be told that 
“ the recorded occurrence in England is in all probability 
that of a bird escaped from captivity. - ” There is no hint of a 
suspicion of this kind in the fourth edition of ‘'YarrelPs 
British Birds' : the undoubted specimen, now in Mr. New- 
come's collection, was obtained on the 19th May, 1843, at 
the epoch of the vernal migration northwards; the species 
has occurred in Belgium and on Heligoland, and it breeds 
as far north as the Hartz Mountains; there is therefore no 
inherent difficulty in assuming the genuineness of its visit to 
our shores. If our esteemed President has any private sources 
of information on this subject, we shall be glad to learn them. 
17. Milne-Edwards and Oustalet on the Birds of Grand 
Comoro. 
[Observations snr la Faune de la grande Comoro. Par MM. A. 
Milne-Edwards et E. Oustalet. Compt. Rend. Paris, ci. p. 218 (July 
1885).] 
The authors give an account of the collections of mammals 
and birds made by M. Humblot during several months' resi¬ 
dence in the island of Grand Comoro. The birds of which 
specimens were obtained are referable to 35 species. Some 
of these are of wide distribution, and some have been intro¬ 
duced ; but the greater number of them may be regarded as 
immigrants from adjacent lands, which are either unchanged 
or have undergone slight modification, and have become what 
M. Milne-Edwards has termed, in his e Recherches sur la 
Faune des Regions Australes,' secondary or derived species. 
These are shortly indicated as :— Coracopsis sibilans, Circus 
humbloti, Leptosomus gracilis, Cinnyris humbloti , Zoster ops 
mouroniensis, Z . angasizae, Turdus comorensis , Graucalus cu- 
cullatus, Gr. sulphureus , Terpsiphone comorensis, Hypsipetes 
