THIS GENERAL SUBJECT. 
23 
and disappearance of occasional residents ; and 3, the periods when their 
broods are full fledged. 
Garrod, a. H. On certain muscles of Birds and their value in classifi- 
cation. Part II. P. Z. S. 1874, pp. 111-123, pi. xvii. 
Hudson, W. H. iJTotes on the procreant instincts of the three species of 
Molothrus found in Buenos Ayres. Tom. cit. pp. 153-174. 
Hume, A. O. The Indian ornithological collector’s Yade Mecum : con- 
taining brief practical instructions for collecting, preserving, packing, 
and keeping specimens of Birds, Eggs, Nests, Feathers, and Skele- 
tons. Calcutta : 1874^ 12mo, pp. 1-78. 
Maclagan, D. Note on Grouse Disease. P. It. S. Edinb. 1873-74, viii. 
p. 378. 
In one bird examined, 4800 Strongyli were estimated as the number of 
parasites present. 
Mi LN e-Edwards, A. Recherches sur la Faune Ancienne des lies Mas- 
. careignes. Ann. Sc. Nat. (5) xix. pp. 1-31, pis. xi.-xv. 
The ancient fauna of Rodriguez and Bourbon appears to afford evi- 
dence of a once more or less united land area in the south-westerly part 
of the Indian Ocean, and some such idea alone can afford an explanation 
of the apparently isolated character of certain species in these and neigh- 
bouring islands, or yield a clue to relationships with forms presumably 
allied to those of Madagascar, Africa, and possibly India and Australia. 
Thus Darwdn’s hypothetical South Indian continental area, of which the 
coral reefs, atolls, and submerged banks are the remnants, receives a 
certain amount of corroboration. The remarkable fact is the meagre 
and changed avifauna of to-day as compared with Leguat’s account 
(1708) ; the caverns and debris revealing disappeared types, and other- 
wise substantiating the veracity of the old traveller’s description. Skele- 
tal segments of the following new genera and species from the island of 
Rodriguez are described and figured : — Erythromachus teguati, Ardea 
megacephala^ Strix (Athene) murivora, Strix sp. ?, Columha rodericana^ 
Necropsiitacus rodericamts; and from the Mauritius fragments, A slur 
sp. n. 7 ^ Phcenicopterus sp. incert. Tiirtur picturatus, Palceornis exsul, and 
Psittacus mauritiamis are further commented on, with fresh illustrations. 
. Observations sur les oiseaux fossiles des faluns de Saucats et de 
la mollasse de L^ognan. Bibl. de I’fecole H. fetudes, xi: art. v. 
Two fossil species of Procellariidce [q. v.], and a Gannet [^Pelecanidce'], 
are described. 
Salvadori, T. Note ornithologische. I. Atti Acc. Tor. ix. pp. 633-635. 
Observations on Dasyptilus pecqueti, Rhodonessa caryophyllacea^ and 
Dasyrhamphus hei^cuUs [Zool. Rec. vii. p. 64]. 
Salvin, O. a visit to the principal museums of the United States, with 
notes on some of the Birds contained therein. Ibis, 1874, pp. 305- 
329, pis. xi. & xii. 
. The Smithsonian Institution, the museums of New York, Philadelphia, 
Boston, Vassal’ College, and the private collections of Mr. Lawrence, Dr. 
