COREMIA FEKUUGAHIA, HAW. AND 0. UMDENTARIA, UAW. Il7 



ferrugata, CI., it seems that the synonymy can only be cleared np by 

 ignoring it altogether, and either accepting the ferrugata of the Fauna 

 Suecica, which is universally acknowledged to be the darker-banded 

 species, as the type, or by calling that species corcidata, Ilfn. and adopt- 

 ing the spadicearia of the Vienna Catalogue as the name of the lighter 

 red species {ferrugaria, Haw.). 



I have drawn out the following synonymic table, bracketing the 

 name ferrugata, CI. as doubtful. 



1. {Ferrugata, ? CI., 6. 14; Linn., F. S., 1292). 

 Corculata, Hfn., 94 ; Naturf., xi., p. 87. 

 Linariata, Bkh., V., {nee. Fb.), p. 381. 



Ferrugata (aria) ? Hb., 285 ; II.-S. ; Frr. ; Bdv. ; Gn. ; Packard 

 (and German authors generally). 

 la. Ab. unidentaria. Haw., Lep. Brit., II., p. 308. 



2. Spadicearia (W.V., Earn. M., No. 12) Bkh., V., p. 389 ; H.-S. ; 



Frr. 

 Alchemillaria, Esp., 40,5 (& 6 ?). 

 Ferrugata (aria) Hb., 460 ; Haw. ; Wd. ; Lampa ; Aurivillius 



(? CI.). 

 Freyeraria, Stgr., 1861. Cat., No. 524. 

 In order to complete our studies of the nomenclature of the two 

 species, it may be well to say that there can be no doubt that their 

 generic name should be Ochjria, Hb. — already resuscitated by Packard 

 in his Monograph of the Geometrid Moths of the United States. In 

 Staudinger's Catalogue the group forms part of the gi'eat genus, Cidaria, 

 Tr. according to Lederer's classification. 



DiFFEKENTiATioN — Mr. C. Fcnu, with a considerable portion of my 

 series of purple forms of unidentaria before him, as well as his own 

 material, drew me up an admirable comparative table of the two, 

 which I cannot do better than give in extenso. 



" Unidentaria. Ferrugaria. 



Black. Bed. 



(None of the characters of distinction seem absolute.) 



FORE- WING. 



A. — Median band black. A. — Median band red. 



B. — Median band followed by a B. — Median band followed by 



generally interrupted band an uninterrupted band 



or a band becoming obso- continued in full intensity 



lete below the middle. to the inner margin. 



BB. — The second band of an BB. — The second band similar to 



ochreous colour edged with unidentaria, but the space 



grey and divided by a between the first and 



similar gi'ey line ; the second lines often white 



space between the first and or whitish, 

 second lines often paler, 

 and sometimes with a few 

 scattered white scales. 



C. — The two submarginal spots C. — The two submarginal spots 

 very conspicuous, black, black or blackish but not 

 distinctly margined on very conspicuous, faintly 

 their outer edges with margined on their outer 

 whitish or the pale sub- edges by the paler sub- 

 terminal line. terminal line. 



