the Geoiiietrina of tJic European fauna. 69 



16. EucESTiA, Hh. 

 Face forming a more or less strongly developed obtuse promin- 

 ence. Palpi moderate, porrected, rough-scaled. Antennae in S" 

 ciliated. Thorax glabrous beneath. Anterior tibiae very short, 

 with strong apical horny hook ; posterior tibiae with all spurs 

 present. Fore wings with areole double. Hind wings in ^ with 

 a transparent basal spot near inner margin, bordered beneath by 

 a membranous bladdery ridge, forming small pocket on lower 

 surface ; 3 and 4 sometimes stalked in ^ , 8 anastomosing with 

 cell from near base to beyond middle, or in ^ sometimes connected 

 with cell by bar beyond middle only. 



The principal member of a well-defined group origin- 

 ating from Hydriomena. It is characteristic of the 

 European region, but extends into India. 



spartiata, Fuesl. eriihescens, Stgr. 



Hinogrisearia, Const. columbata, Metz. 



rufata, F. lithoxylata, Hb. 



fiavicornata, Z. mundidata, Gn. 



griseata, Schiff. hoisdnvaliata, Dup. 



farinata, Hufn. plagiata, L. 



Himiinosata, Christ. numidaria, H.-S. 



*distinctata, Christ. prceformata, Hb. 



*am(Bnata, Christ. *frandulentata, H.-S. 



hosporaria, H.-S. ohsitaria, Ld. 



duplicata, Hb. *opificaia, Ld. 



*castiliaria, Stgr. simpliciata, Tr. 



excelsata, Ersch. *fraternata, H.-S. 



Standingeri, Ersch. *perpetuata, Ld. 

 *senata, Christ. 



17. Caesia, Hb. 

 Face prominent. Palpi moderate, porrected, rough- scaled. 

 Antennae in ^ ciliated. Thorax glabrous beneath. Posterior 

 tibiae with all spurs present. Fore wings with areole double. Hind 

 wings in ^ with a transparent basal spot near inner margin, 

 bordered beneath by a membranous bladdery ridge, formmg small 

 pocket on lower surface ; 8 anastomosing with cell shortly beyond 

 middle. 



The single species, ranging throughout the colder 

 regions of Northern Europe, Asia, and America, only 

 differs from Eucestia in the absence of the tibial hook. 

 paludata, Thnb. 



