A LIST OF THE GENERA AND FAMILIES OF MAMMALS. 15 
‘Zoologia Rosso-Asiatica, quoted by some authors as 1811 and by 
others as 1831. This discrepancy in dates is due to the fact that the 
work was partially distributed in 1811, but not completed until twenty 
yearslater. New genera and species described in such works, if quoted 
from the date of completion, may be incorrectly considered synonyms 
of other names which really appeared later. 
Since, as already mentioned, a difference of a few months or even a 
few days may determine the acceptance or rejection of a name, it is 
important to ascertain, with as much accuracy as possible, the exact 
date of publication, and no effort has been spared to attain this object. 
In the present index, when the real date differs from the apparent 
date, both are cited, the latter being given in parentheses or in the 
form ‘for 18507, ete., followed by the real date at the end of the refer- 
ence. In recent years considerable labor has been expended in ascer- 
taining the dates of publication of some of the more important 
zoological works, and several special papers on this subject have been 
published, chiefly by Richmond, Sclater, Sherborn, and Waterhouse. 
These papers are as follows: 
LIST OF SPECIAL PAPERS GIVING DATES OF PUBLICATION OF WORKS ISSUED IN PARTS. 
Bush, Lucy P. Note on the Dates of Publication of Certain Genera of Fossil Verte- 
brates. «Am. Journ. Sci., 4th ser., XVI, 96-98, July, 1903. 
Geoffroy, I. Table Méthodique et Analytique des Ouvrage de Geoffroy Saint Hilaire. 
— Vie, Travaux, etc, d' Etienne Geoffroy Saint Hilaire, Paris, 421-471, 1847. 
Marsh, 0. C. Note on the Dates of some of Prof. Cope's Recent Papers. - Am. 
Journ. Sci. and Arts, 3d ser., V, 235-2306, Mar., 1873. 
Richmond, C. W. On the Date of Lacépéde's Tableaux. < Auk, XVI, 525-329, Oct., 
1899. i 
Sclater, P. L. List of the Dates of Delivery of the Sheets of the ‘ Proceedings’ of 
the Zoological Society of London, from the commencement in 1830 to 1859 
inclusive. < Proc. Zool. Soc. London, 1893, 436-440. 
Sherborn, C. Davies. On the Dates of the Parts, Plates, and Text of Schreber’s 
'Süugthiere. «Proc. Zool. Soc. London, 1891, 587-592. 
Dates of the Parts of P. S. Pallas’ . . . ‘Nov. Spec. Quadr. Glirium.’ <Ann. 
and Mag. Nat. Hist., 6th ser., VII, 236, 1891. 
On the Dates of Shaw and Nodder’s ‘Naturalist’s Miscellany.’ «Ann. and 
Mag. Nat. Hist., 6th ser., XV, 375-376, 1895. 
On the Dates of the Natural History portion of Savigny’s ‘Description de 
l'Egypte. «Proc. Zool. Soc. London, 1897, 285-288. 
Note on the Dates of the ‘‘The Zoology of the ‘Beagle.’’? <Ann. and Mag, 
Nat. Hist., 6th ser., X X, 483, 1897. 
Lacépéde's Tableaux . . . des Mammifcres et des Oiseaux; 1799. <Nat. Sci., 
XL, 432; 1897. 
Dates of Blainville's *Ostéographie.' < Ann. and Mag. Nat. Hist., 7th ser., IT, 
76, 1898. 
A Note on the Date of the Parts of ‘Humboldt and Bonpland's Voyage: Obser- 
vations de Zoologie; «Ann. and Mag. Nat. Hist., 7th ser., III, 428, 1899. 
Index to the ‘‘Systema Naturae"! of Linnzeus, Manchester Museum Handbooks, 
Publication 25, pp. 1-108, London, 1899. 
Sherborn, C. Davies, and Jentink, F. A. On the Dates of the Parts of Siebold’s ‘Fauna 
Japonica’ and Giebel's ‘Allgemeine Zoologie' (first edition). <Proc. Zool. 
Soe. London, 1895, 149-150. 
