A LIST OF THE GENERA AND FAMILIES OF MAMMALS. 25 
able case is the first name—Aplodontia 

which is capable of at least 
24 modifications, each one differing from the rest by a single letter.” 
Aplodontia. Aploudon. 
A ploodontia. Apludon. 
Aploudontia. Aplodus. 
Apludontia. Aploodus. 
Aplodon. Aploudus. 
Aploodon. Apludus. 
Ccelogenus F. Cuvier, 1807. 
Coelogenys Illiger, 1811. 
Ceelogenus Fleming, 1822. 
Coendou Lacépéde, 1799. 
Coendus Geoffroy, 1803. 
Coandu G. Fischer, 1814. 
Coéndus Illiger, 1815. 
Hyperoodon Lacépéde, 1804. 
Uperoodon Gray, 1845. 
Hyperhoodon Gervais, 1850. 
Nycticeius Rafinesque, 1819. 
Nycticejus Temminck, 1827. 
Nycticeus Lesson, 1827. 
Priodontes F. Cuvier, 1827. 
Priodon MeMurtrie, 1831. 
Priodonta Gray, 1843. 
Haplodontia. Haploudon. 
Haploodontia. Hapludon. 
Haploudontia. Haplodus. 
Hapludontia. Haploodus. 
Haplodon. Haploudus. 
Haploodon. Hapludus. 
Czelogonus Lond. Encycl., 1845. 
Caelogenys Agassiz, 1846. 
Genysccelus Liais, 1872. 
Coendu Lesson, 1827. 
Cuandu Liais, 1872. 
Coendu[a] Lydekker, 1890. 
Hyperodon Gray, 1863. 
Hyperaodon Cope, 1869. 
Hyperoodus Schulze, 1897. 
Nycticeyx Wagler, 1830. 
Nycticea Le Conte, 1831. 
Prionodon Gray, 1843. 
Prionodos Gray, 1865. 
HERRERA’S MODIFIED GENERIC NAMES. 
Perhaps the most radical and most remarkable system of emenda- 
tion ever suggested is that proposed by Prof. A. L. Herrera. He 
proposed to modify all existing generic names in such a way that the 
first syllable and the ending should indicate the class and the king- 
dom to which the genus belonged; names of animals to have masculine 
endings, those of plants feminine endings, and those of minerals neuter 
endings; and the class to be indicated by prefixing the first syllable of 
the class name. Thus all generic names of mammals would begin with 
Mam, those of birds with Ave, those of reptiles with Zep, those of 
batrachians with «£r, and those of fishes with 7'/s. For full details 
of this scheme of nomenclature the reader is referred to Herrera’s 
papers.” The only modifications of mammal names published in the 
first paper are those in the following list: 

@ Beside these emendations, an almost indefinite number of anagrams can be formed 
from the original word Aplodontia. 
bSinonimia vulgar y cientifica de los principales Vertebrados Mexicanos, Mexico, 
1899; see also Science, new ser. X, p. 120, July 28, 1899. A more extended paper 
entitled * Nouvellé Nomenclature des Etres organisés et des Minéraux’ containing a 
‘Liste des principaux genres des animaux et des plantes’ is published in instalments 
in the *Memorias y Revista Soc. Cien. Antonio Alzate,’ beginning in Tomo XV, 
numbers 5 and 6, 1901. j 
