462 



CHAPTEll OF VARIETIES. 



that they may be rendered sufficiently distinct from one another as to 

 prevent the possibility of their causing that confusion which they are 

 at present calculated to create, yet some readers whp, like myself, only 

 wish to see science advancing, will, perhaps, second my call for the 

 removal of these clogs to the student's progress. The only use of a 

 name is to distinguish one object from another. This admitted, it 

 cannot then be denied, that a name ceases to be useful in distinguishing 

 one object from another, if that name is also conferred upon other 

 species. The following list is composed of names which, instead of 

 being restricted to one species, are conferred upon others also, and 

 although it will be observed, that some of them are not exactly similar, 

 yet they are so nearly so (many of them only differing by a letter), 

 that they are very likely to be the cause of leading students, par- 

 ticularly those who are not acquainted with the languages from which 

 they are derived, into errors, to prevent the occurrence of which they 

 require some alteration. In the alteration of any two similar names 

 applied to different objects, the rule, I think, ought always to be to 

 preserve the older and discard the newer, and bestow another in place 

 of it. 



Papilio (in Entomology), 

 Phthiria (in Diptera), 

 Phthirus (in Anoplura), 

 Philanthus (in Hymenoptera), 

 Philanthus (in Coleoptera), 

 Psylla (in Homoptera), 

 Psila (in Diptera), 

 Psilus (in Hymenoptera), 

 Rhagio (in Diptera), 

 Rhagium (in Coleoptera), 

 Rana (in Erpetology), 

 Rana (in Botany) 



Lycus > ,, ., p. i n v Zachina (in Diptera), 

 T* \ (both in Coleoptera), 

 Lyctus 3 Zachmus (in Coleoptera), 



Zachys ) (both - n Coleo era) 

 Zrachys 3 



Aphidius (in Hymenoptera), 

 Aphodius (in Coleoptera), 

 Auchenia (in Quadrupeds), 

 Auchenia (in Entomology), 

 Anomala (in Coleoptera), 

 Anomalon (in Hymenoptera), 

 Chrysopa (in Neuroptera), 

 Chrysops (in Diptera), 

 Ephyra (in Lepidoptera), 

 Ephydra (in Diptera), 

 Laridae (in Entomology), 

 Laridae (in Ornithology), 



Metopia (in Diptera), 

 Metopius (in Neuroptera), 



> (both in Coleoptera), _J ' \ (both in Coleoptera). 

 Noterus 3 Zychms 3 



Papilio (in Ornithology), 



The compiler of the " Systematic Catalogue of British Insects" has 

 very properly refused to admit into his work many entomological names, 

 on account of their being previously engaged in other sciences. Thus, 



