CLASSIFICATION AND NOMENCLATURE 59 



individual whom we recognize as the original authority for the name used. 

 Thus the scientific name of the dog is written Canis familiar is Linnaeus, 

 since Linnaeus bestowed this name upon this particular species. The 

 name of the author is not italicized. If the form of the name is not the 

 exact one the author used, his name is enclosed in parentheses. For 

 example, the name Sorex aquaticus was given by Linnaeus to the common 

 mole, but since it belongs to a more recently established genus, Scalopus, 

 the name is written Scalopus aquaticus (Linn.). Authors' names are 

 often abbreviated, as Linn, for Linnaeus. The name of the subspecies 

 may be added to that of the genus and species, as Scalopus aquaticus 

 machrinus (Rafinesque), the subspecies of the common mole found in the 

 upper Mississippi valley. Sometimes the common name of an animal is 

 also the scientific name of the genus, in which case the difference is shown 

 by italicization and capitaHzation. For example, Paramecium and hydra 

 are the common names of animals belonging respectively to the genera 

 Paramecium and Hydra. 



