46 Bulletin American Museum of Natural History. [Vol. XXVII, 



Ursus, Canis, Felis. 



Equus. 



Camelus, Capra, Bos, Cervus (camelopardalis, alces, 



dama, etc.), Moschus, Sus. 

 Tapir, Elephas, Rhinoceros, Hippopotamus. 

 Castor, Lutra, Phoca, Trichecus (rosmarus, manatus). 

 Monodon, Balsena, Physeter, Delphinus. 



STORR, 1780. 

 ' Pi'odromus Methodi Mamiiialium', 1780. 



Gottlieb Conrad Christian Storr's exceedingly rare work, was brought 

 to light in 1874 as a result chiefly of the efforts of Dr. Theodore Gill, who, 

 in the 'Bulletin of the Philosophical Society of Washington' (Vol. II, 1875- 

 1880, appendix v., read Oct. 1874) published a summary of the work with 

 the tables of classification. 



Storr divided the "Imperium Naturae" into successively narrowing 

 groups, and was apparently the first mammalogist to employ groups inter- 

 mediate between the class and the order. To illustrate his method we may 

 show how he placed the genus Felis in the system. 



Imperium Naturae 



Regnum Organici 



Republica Animalium 



Agmen Rubrisangvium 

 Acies Calidorum 



Classis I Mammalium 



Phalanx I Pedatorum 



Cohors I Unguiculatorum 

 Ordo I Primates 



Missus II Emanuati 



Sectio II [not named] 

 Coetus I Unci 



Genus I Felis. 



In the high degree of differentiation of groups within groups this classifi- 

 cation goes far beyond even that of Ray. The only division that corre- 

 sponds exactly to one noAv in use is the class. Some of the orders {e. g., 

 " Pecora") correspond in rank nearly to modern orders ; others (" Primates," 

 "BelluEe") are more nearly equivalent in rank, but not content, to super- 

 orders. The genus frequently corresponds, as in Linnaeus, to the modern 



family. 



The classification appears to have been built rather by the following of 

 a priori principles than by the judicious aggregation of smaller into larger 

 groups as the result of the discovery of more and more elements of simi- 



