106 Mr. J. H. Leech on 



and also at Gensan, in July. My native collector met 

 with the species at Nikko. Eastern Asian specimens are 

 usually considerably darker than the European type. 



Distribution. Europe. — Amurland; Japan; Yesso ; 

 Northern, Central, and Western China. 



D77. Acroiiijcta longa. 



Acronyda longa, Gucn., Noct., i, p. 54 (1852). 



Acronycta lutca, Brem., Lep. 0.st.-Sib.,i3. 48. pi. iv, fig. 7 

 (1864) ; Oberth., Etud. d'Entom., x, p. 18, pi. ii, fig. 14 

 (1884) ; Stand., Rom. sur Lep., vi, p. 801 (1892). 



Phao'ctra leucoptera, Butl., Trans. Ent. Soc. Loud., 1881, 

 p. 595. 



Pliaretra lowjn, Leech, Proc. Zool. Soc. Lond., 1889, p. 478. 



Occurs at Oiwake, Yokohama, Gensan, and Chang-yang. 



The secondaries are whitish in the type and bright 

 yellow in var. latea. 



Distribution. North America; Japan; Corea; Amur- 

 land. 



978. Acronycta digna. 



Thalpophi/a, digna, Butl., Trans. Ent. Soc. Lond., 1881, 



p. 176. 

 Acronycta michael, Oberth., Etud. d'Entom., x, p. 18, pi. ii, 



fig. 13 (1884). 

 Acronyctct digna, Leech, Proc. Zool. Soc. Lond., 1889, p. 



475. 



I have specimens from Yokohama, Oiwake, Gensan, 

 Chang-yang, Ta-chien-lu, Wa-shan,and Chia-kou-ho. There 

 appears to be two broods of this species in China, or the 

 period of emergence is an unusually long one, as examples 

 were taken in each month from May to August. 



Tlie species varies considerably in size, and in the in- 

 tensity of the ochreous coloration of the secondaries. 



Didrihutiun. Japan; Corea ; Aml^rland; Central 

 and Western China. 



979. Acronycta snlviridis. 



Plataplecta suhviridis, Butl., Ann. and Mag. Nat. Hist., (5) 

 i, p. 195 (1878) ; 111. Typ. Lep. Het., ii, p. 32, pi. xxxi, 

 fig. 3 (1878). 



I obtained the species in Satsuma in May; there were 

 specimens from Yokohama in Pryer's collection, and I have 



