26 NOTES AND OBSERVATIONS 



CCENONYMPHA TyPHON, HaW. 



Davus, Fab. 



Larva and pupa dark-green, the former with a dark dorsal 

 line (Duncan). 



Mr. Doubleday assures me that this insect is the typical 

 Daviu of Fabricius, and Haworth's Davus the Rothliehii of 

 the German writers; Still I do not think it worth while to 

 alter the names till the question as to whether we have more 

 than one species in our collections under the name of Davus 

 is finally settled. The descriptions of the larvae and pupae, 

 given above, certainly appear to differ, but they are so very 

 brief, that it is impossible to say much about them. The 

 information I I'eceived from Mr. Marshall as to the habits of 

 Davus and Typhon is incomplete, as they are by no means 

 confined to the localities he specifies. Mr. Birchall has pub- 

 lished some interesting notes on C. Typhon in Zool. 8727-8 

 (Sept. 1863). 



Chionobas ^no, Bd. 

 Also, Bd. var. 

 Semidea, Say = Also ? 

 Scudder, in the " Boston Journal of Natural History," 

 gives a very detailed description of the larva of C. Semidea, 

 from which I have abridged the following : — 



Head brovv-nish-yellow ; body pale yellowish-green, more or 

 less tinged with reddish above the dark-green lateral streak ; 

 below it, it is grass-green. Dorsal and sub-dorsal streaks 

 black. On Peltigera canina (a lichen). YIII. 



The perfect insect flies in July and August in the moun- 

 tains of the north of North America. 



Erebia Gorgophone, Bellier. 

 Ann. Soc. Ent. de France, 1863, p. 419. 

 Exp. 1-3 in. — 1-4 in. 



