ASIATIC DISTRIBUTION OP BRITISH GEOMETRIDJE. 5 



ClDARIA PICATA, Hb. 



Hydriomena picata, Meyr. 



Occurs in Central and Western China. 



" The specimens show variation in the width of the lines 

 forming the central band, and also in the width of the white 

 border of the band ; in a large proportion of them the secondaries 

 are devoid of marking on the upper surface. The examples from 

 Central China are rather smaller than the majority of those 

 from the west, and appear to be more constant in always having 

 the band composed of broad and often confluent lines." — (Leech). 



Cidaria corylata, Thnb. = fabrefactaria, Oberth. 

 Hydriomena corylata, Meyr. 



Found in Amurland, Isle of Askold, and Japan. 



The variation of the species in Eastern Asia is similar to 

 that which occurs in European specimens. 



[Cidaria fulvata, Forst. A close ally of this species is 

 described by Mr. Leech from Western China under the name 

 Cidaria ocliracearia.] 



[Cidaria yokohamce, Butl. Mr. Leech thinks that this may 

 possibly be an Eastern Asian form of Antielea (Cidaria) cucidata, 

 Hum.] 



Cidaria (Larentia) suffumata, Hb. = minna, Butl. 

 Hydriomena suffamatct^ Meyr. 



This species is found in Western China, Japan, and Yesso. 



Mr. Leech considers C. minna, Butl., from Japan, to be a 

 small form of C. suffumata, and mentions that one of his Japanese 

 specimens is only 24 millim. in expanse. 



Cidaria (Larentia) truncata, Hum. 

 Hydriomena truncata, Meyr. 



This species is represented in E. Siberia, Amurland, Isle of 

 Askold, Japan, Yesso, Kiushiu, and Western China by forms that 

 are somewhat similar to, although not exactly identical with, 

 some of those occurring in Europe. 



Cidaria (Larentia) immanata, Haw. 



Occurs in Central and Western China, Japan, and Yesso. 



The type and var. marmorata are each represented, and some 

 of the specimens approach var. thing vallata, Sfcaud. ; the latter 

 are from Nemora in the north of Yesso. 



Mr. Meyrick and Sir George Hampson treat this species as a 

 form of C. truncata. 



Cidaria silaceata, Hb. 



Hydriomena silaceata, Meyr. 

 This species is found in Amurland, Japan, Kiushiu, and 

 Central and Western China. 



