62 Mr. E. Meyrick on the classification of 



the northern hemisphere. The modification of the 

 structure of vein 8 of the hind wings in the $ of some 

 species, so that it resembles that of the ^ , may be 

 regarded as an instance of the transference through 

 inheritance of secondary sexual characters. The con- 

 verse in the <? may be simply retention of an original 

 character, or reversion. The occasional separation of 

 veins 6 and 7 (very rare in this family) is obviously due 

 to the same tendency to lateral expansion which, as 

 noted above, has modified the structure of vein 8, to 

 compensate for the area absorbed by the folded lobe. 



virctata, Hb, ^'expressata, Christ. 



appensata, Ev. sertata, Hb. 



*ustata, Christ. sahinata, H.-G. 



carpinata, Bkh. polycommata, Hb. 



3. Mysticoptera, n. g. 

 Ftice with short cone of scales. Palpi moderate, porrected, 

 rou,t;h-scaled. Antennae in ^ filiform, minutely ciliated. Thorax 

 glabrous beneath. Abdomen crested. Posterior tibiae with all 

 spurs present. Fore wings with areole simple. Hind wings in <? 

 with doubly folded lobe on inner margin ; '2 absent in ^ , 8 in S' 

 connected with cell by bar beyond middle, in $ anastomosing with 

 cell from near base to beyond middle. 



Contains only the following species at present, in- 

 habiting Central and Northern Europe ; it is a develop- 

 ment of Lobopliora. 

 sexalisata, Hb. 



4. LoBOPHORA, Curt. 

 Face smooth or with short cone of scales. Palpi moderate or 

 short, porrected, rough-scaled. Antennae in <? ciliated. Thorax 

 glabrous beneath. Abdomen crested. Posterior tibiie with all 

 spurs present. Fore wings with areole double. Hind wings in 3' 

 with more or less developed folded lobe on inner inargin, neuration 

 sometimes distorted ; 6 and 7 sometimes separate, 8 anastomosing 

 with cell from near base to beyond middle. 



A small genus, occurring in Europe and North 

 America ; its identification in other regions is not yet 

 certainly made out. 



halterata, Hufn. 



externata, H.-S. 



Hntcrnata, Piing. 



