26 
Mamatelesus. 
Mambassarisus. 
Mamblarinaus. 
Mameanisus. 
Mameapraus. 
Mameariacus. 
Mamcastorus. 
Mamcaviaus. 
Mamcercolepteus. 
Mamcoelogenysus. 
INDEX 
Mamdasyproctaus. 
Mamdelphinus. 
Mamdicotylesus. 
Mamdidelphisus. 
Mamdipodom ysus. 
Mamfelisus. 
Mampgalictisus. 
Mamgeom ysus. 
Mamlepus. 
Mamlutraus. 
GENERUM MAMMALIUM. 
Mammustelaus. 
Mammyrmecophagaus. 
Mamnasuaus. 
Mamnyctinomus. 
Mamprocyonus. 
Mamsciurus. 
Mamspermophilus. 
Mamsynetheresus. 
Mamtatusiusus. 
Mamtaxideaus. 

Mamursus. 
Mamvulpesus. 
Mamconepatus. Mammephitisus. 
Mameyclothurus. Mammonachus. 
Mamcynomisus. Mammus. 

MISPRINTS. 
No special effort has been made to collect misprints, for an attempt 
to index systematically the multitude of misspelled names which occur 
in scientific works and serials would be an endless undertaking. Many 
misprints, however, which have come to light in compiling the index, 
particularly those in standard catalogues and lists, have been pre- 
served. Occasionally it is impossible to tell whether a word is a 
misprint or an emendation; and some misprints are not only unrecog- 
nizable (as Buncelunus for Bunelurus), but exceedingly troublesome 
(as Charopotamus for Chwropsis),“ since they seem to be new names or 
take forms which may be subsequently proposed for valid genera. 
Such are Cystophoca tor Cystophora, Desmatocyon" for Cynodesmus, 
hotomys for Epotomys, Tlyohippus for Tlypoh uppus. Jacalius for Saca- 
lius, Juncus for Sunkus, Lagocetus for Lagenocetus, Microtolaqus for 
Macrotolagus, Perascalops for Parascalops, and Scapasius for Scapanus. 
Although it would seem that obvious misprints should have no sta- 
tus in nomenclature, yet several cases have arisen in which the decision 
has been otherwise, and the way seems to be opened to giving them 
undue importance. Much confusion is likely to arise if, as has some- 
times happened, they are adopted to replace preoccupied names or are 
relied upon to establish the validity of names which would otherwise 
be considered preoccupied. This point may be made clearer by a few 
examples of generic names of fishes and mammals. 
In ichthyology variants of Thynnus and Orcynus have been pro- 
posed to replace the names from which they have been derived because 
the latter are preoccupied. In 1817 Cuvier proposed two subgenera 
of Scomber (Thynnus and Oreynus), which were subsequently com- 
bined by many ichthyologists under the name 7hynnus. In 1861 Gill 
replaced Thynnus by Orycnus, due simply to a misreading of the name 
Orcynus, and subsequently replaced it by Oreynus in its proper form. 
In 1863 Dr. J. G. Cooper recognized the two groups of Cuvier, adopt- 

“ Beddard, Textbook Zoogeography, 100, 1895. 
^ Possibly an emendation and not a misprint. 
