LIST OF AUTHORS REFERRED TO. 
The following enumeration of works is chiefly intended to explain the abbrevia- 
tions used in connection with the preceding list of families: the works most 
accessible to students generally have been used, whenever they could be referred 
to in explanation of the limits of families adopted ; special monographs have been 
chiefly referred to when the groups in connection with which they are cited have 
not been limited in the same manner in general works. The ‘“ Ostéographie’’ of 
de Blainville, although not actually referred to in connection with any special 
family, is so indispensable to any investigator of the mammals, and has been so 
much used by the writer, that the title thereof and an analysis of its contents have 
been given; the analysis and assignment of dates of publication of the several 
monographs will doubtless prove useful, and save to some time and labor like that 
necessarily devolved upon the writer in ascertaining the data furnished. 
For the information of students, and because it is information often desired, the 
publishers’ prices of most of the works cited are given, in the currency of the 
country where they were published. Many of the separate monographs reprinted 
from journals can be obtained from the second-hand book dealers—espcecially the 
German—and from the Naturalists’ Agency of Salem, Mass., but at varying prices. 
In order to secure uniformity of typography, only the initial letters of the charac- 
teristic words are capital, the example of the learned brothers Grimm, as well as 
‘other German writers, sanctioning such usage for their language. The initial 
letters, however, of the more important words of the general titles, and to which 
reference is made in the list, are capitalized, corresponding with and rendering at 
once intelligible the abbreviated references. The punctuation of the respective 
title-pages is adopted. The symbol (<) denotes that the memoir after which it is 
inserted is contained in the volume or series whose title follows; the symbol of 
equality (=) denotes that the memoir is co-extensive with the volume. 
ALLEN (Joel Asaph). On the eared seals (Otariade), with detailed descrip- 
tions of the North Pacific species, by J. A. Allen. Together with an account 
of the habits of the northern fur seal (Callorhinus ursinus), by Charles 
Bryant. <Bulletin of the Museum of Comparative Zoology, +--+. II, No.1 
= pp. 1—108. 
ALLMAN (George James). On the characters and affinities of Potamogale. 
..., <Transactions of the Zoological ‘Society of London, VI, 1—16, pl. 
1-2, 1866. 
BAIRD (Spencer Fullerton). Mammals of North America; the descriptions 
of species based chiefly on the collections in the museum of the Smithsonian 
institution. ---. With eighty-seven plates of original figures, illustrating the 
genera and species, and including details of external form and osteology. 
(81 ) 
