Heterocera from China, Japan, and Corea. 11 



699. Thyatira apicalis, sp. n. 



Closely resembles iT. aurorina, But!., in coloration and marking, 

 1)ut it is a more slender insect, and agrees in tliis respect with T. 

 vpulescens, Alph. The apical area of primaries is pale, and the basal 

 patch is much smaller than the same character in T. anrorina. 



Expanse 34 millim. 



One male specimen taken at Ni-tou in July or August, 

 Hahitat. Western China. 



700. Tliyatira fla.vida. 



Thyatira flavida, But!., Cist. Ent., iii, p. 131 (1885). 

 Thyatira oblonga, Pouj., Ann. Soc. Ent. Fr., 1887, p. xlix. 



I have one example of the type form from Ichang, taken 

 in August. A specimen was also obtained at Omei-sban, 

 and one at Wa-ssu-kow ; botb were taken in July and are 

 referable to the form oblonga, Pouj., which difters from the 

 type in having rather smaller spots on the primaries, and 

 the secondaries are deeply suffused with dark grey instead 

 of being yellowish straw-colour. 



T. flavida was described from Hakodate. 



Distribution. Yirsso ; Central and Western China. 



701. Thyatira flavimargo, sp. n. 



Primaries fuscons-brovvn traversed by several darker and paler 

 wavy lines ; the thorax is tinged with purplish -brown, and there is 

 a .spot of the same colour at the base of the wing ; above the reniform 

 stigma, which is outlined in blackish, there is a round pinkish spot, 

 and a larger curved one towards apex ; this latter is outwardly edged 

 with black ; on the middle of inner margin there is a narrow, upright, 

 whitish spot and a round ochreous one edged inwardly with whitish 

 towards angle ; fringes brown, preceded by a sinuous black line. 

 Secondaries fuliginous, broadly bordered with orange-yellow on 

 outer margin ; fringes also orange-yellow. Under surface fuliginous 

 with yellowish central bands and marginal borders. 



Expanse 46 millim. 



One example of each sex from Pu-tsu-fong, one female 

 specimen from Chia-kou-ho, and one male from Omci-shan. 

 The above description has been drawn up from tlu; Pu-tsu- 

 fong female, as this specimen is in fine condition. The 

 species occurs in June and July. 



Habitat. Western China. 



