Heterocera from China, Japan, and Corea. 513 



Genus Heliothela. 

 Guenee, Delt. and Pyral., p. 152 (1854). 



2005. Heliothela nigralbata. 



Heliothela nigralbata, Leech, Entom., xxii, p. 65, pi. iv 



fig. 7 (1889). 

 Heliothela nigralbata. Hampson, Trans. Ent. Soc. Lond., 



1899, p. 281. 



Described from Chekiang. There was one specimen in 

 Pryer's collection. 

 Distribution. Eastern China ; Japan. 



Genus Siivlethistis. 

 Hampson, Fauna Brit. Ind., Moths, iv, p. 446 (1896). 



2006. Sim&thisiis leechi, sp. n. (Plate XV, fig. 24.) 



Primaries purplish-grey dusted with blackish, a broad white 

 lunule at end of the cell, two white spots between the lunule and 

 the inner margin, a white spot dusted with yellow on the costa ; these 

 white marks represent a transverse band edged by a black line 

 which is excurved opposite the lunule ; postmedial line black, curved 

 and irregularly dentate, followed on the costa by a small white 

 triangular spot ; there is a suffused golden-brown band beyond the 

 annular mark (formed by sinus of antemedial line and the lunule) 

 from vein 7 to vein l,the band outwardly limited by a dentate black 

 line. Secondaries purplish-grey dusted with blackish ; a white ante- 

 medial band dusted with ground colour and blackish ; the band, 

 which does not extend to the costa, is outwardly bordered with golden- 

 brown edged with black ; a longitudinal series of three blackish dots, 

 one basal and the others in the cell ; postmedial line black, dentate. 

 Fringes white mixed with grey, entirely grey at apex, towards 

 the inner angle of the primaries, and at outer angle, middle, and 

 anal angle of the secondaries. Under surface brown with white bands 

 as above ; the primaries have a white dot in the cell and two white 

 dots beyond the end of cell ; postmedial line black, originating in a 

 white triangle on the costa, traversing a greyish band ; secondaries 

 powdered w T ith grey on outer two-thirds. 



Expanse 20 millim. 



Three specimens from Wa-shan and two from Ta-chien- 

 lu. June. 



Habitat Western China. 



