THE CANADIAN ENTOMOLOGIST. 27 



SYNONYMIC NOTES. 



BY HENRY H. LYMAN, M. A., MONTREAL 



In 1S34 Dejean proposed the name Euchaetes for a genus of 

 Coleoptera, and it had thus been preoccupied for seven years when Harris 

 used it in 1S41 for the moth named by Drury, Bombyx Egle. 



In 1S58 it was used for a third time by Sclater for a genus of birds, 

 and in 1876 Leconte described another genus of Coleoptera under this 



same much-used name. 



As it is a well-known rule of nomenclature that a generic name can 

 be used only once in the animal kingdom, all subsequent use of the term 

 for other genera is erroneous and must cease. 



It therefore becomes necessary to give other names, and I propose 



the name Euch^etias, from a kindred Greek word, for the genus erected by 



• Harris. It is not necessary for me to define the genus, as it is well known. 



and this is merely a necessary change of name, the type, of course, being 



Egle, Drury. 



For the genus erected by Leconte, I would suggest the name 

 Epeuch/ETES, the type being Echidna, Lee. 



Leconte's genus was described very fully in Proc. Amer. Phil. Soc, 

 XV., 319, and the type species on page 320. 



In view of what I said in my first presidential address on the subject 

 of changes in generic names, it is perhaps the irony of fate that it should 

 fall to my lot to myself make changes of this nature, but I can at least 

 plead in extenuation, as the woman in the story did of her baby, that they 

 are only very little ones. 



Recently, in working over my Notodontidaa I made a rather curious 

 discovery, namely, that the true Angu/osa, S. ifc A., is the species which 

 stands in our catalogues as Georgica, H.-S. On plate 83. which, by the 

 way, in the English page of the text is erroneously numbered LXXVIII., 

 are shown two moths, a ^ and 9 > the former of which can only represent 

 Georgica, while the latter is doubtless intended for the species which we 

 have been calling Angu/osa, as its larva feeds on oak. though it really, in 

 my copy at least, looks more like Ferruginea, Pack., the larva of which, 

 however, feeds on birch. But this $ is figured merely as a colour variety 

 of Angu/osa, as in the text it is said "the female in the figure is a variety 

 of colour, most of that sex being coloured like the male.'' 



