278 



C. Eyes naked; stout species, tliickly haired; head sunken; abdomen 



exceeding the hind wings : 



BOMBYCIA, Uahner (Tentamen). 



Type : Noctua Or {D. and S.). 



Species : Or (Z). and S.). 



ocularis {L.) {—octogesiina). 

 diluta {D. and S.). 



D. Eyes naked ; body slender ; head not sunken ; scantily haired ; abdo- 



men not exceeding the hind wings : 



TETHEA, Euhner (1816). 



Type: Noctua duplaris, Linn. 



Species : duplaris {Linn.). 

 fluctuosa, Hiibner. 



We have seen no North American species of the tribe Pavidae. 

 Mr. Walker has described one from Canada. In the Proceedings of 

 the California Academy of Sciences, October 6, 1873, appears the 

 description of one by Mr. Hy. Edwards. After a careful study of 

 this description we are compelled to think the species erroneously 

 generically determined. No structural points are spoken of, and 

 no comparisons are made with the European species of the group 

 to which it is said to belong. 



Treitschke seems to have had a fancy for Hiibner's generic names, 

 and has used them without hesitation in his work, but he applied 

 them usually in a totally different sense. He used the generic term 

 "Boarmia" in the place of Hiibner's Cymatophora, and in this he 

 has been followed. But what regard for the laws of zoological no- 

 menclature can be shown in retaining that name, when the species 

 must, by priority of designation, be referred to Cymatophora ? 



