4 PLATYPTILUS. 



of P. hertrami, and am unable to detect any re- 

 cognizable difference. The Californian form does 

 not possess the unicolorous white hind feet which, 

 according to Prof. Zeller, distinguish his Texan 

 Flatyptilus hischoffii from the European species. 



The only other species to which it might perhaps 

 be referred is Pteropliorus cervinidactylus, Packard 

 (Ann. Lye. Nat. Hist. N. Y. x. 266) ; but that species 

 is described as having the " fringe " (of the fore wings) 

 " concolorous with the wing," which is stated to be 

 " fawn-brown." If this may be read as intended to 

 refer to the pale ground-colour of the wing (the 

 " paler subochreous along the inner edge "), the 

 description exactly applies to my specimens and to 

 the European species. The only other point in which 

 it scarcely agrees with P. hertrami is in the " black 

 dot just above and near the end of the split." 

 American and English specimens of P. hertrami 

 have a few dark scales near the end of the fissure, 

 some above and some below it ; but they scarcely 

 amount to what may be called a black dot. 



1 am nevertheless inclined to think that this will 

 be found to be the species described by Mr. Packard. 



Since writing the above, I have heard from Prof. 

 Zeller that he is now inclined to regard hertrami, 

 ockrodactylus, and hischoffii as all belonging to the 

 same species. 



Taken not uncommonly in Mendocino and Lake 



