322 Mr. J. IT. Leech on Lepidoptera Heterocera 



curved. Larger than P. pedaria, and the thorax is far less 

 robust. 



Expanse 48-58 rnillim. 



Four male specimens from Yokohama in Fryer's collection. 



Hob. Japan. 



Genus ZAMACRA. 



(Meyrick, Trans. Ent. Soc. Lond. 1892, p. 121.) 



Zamacra albofasciaria. 

 Apocheima albofasciaria^ Leech, Entom., Suppl. p. 48 (May 1891). 



Three male specimens from Yokohama in Fryer's col- 

 lection. 



Hob. Japan. 



The genus Zamacra was founded by Meyrick (Trans. Ent. 

 Soc. Lond. 1892, p. 121) for flabellaria, Heeg., previously 

 placed in Apocheima, Hlibn. 



Genus BISTON. 

 (Leach ; Hampson, Fauna Brit. Ind., Moths, iii. p. 245 (1895).) 



Biston emarginaria, sp. n. (PL VII. fig. 8.) 



Outer margins of all the wings with two deep indentations. 



Female. Primaries white, sparingly freckled with black ; 

 the basal area limited by an angulated black line and clouded 

 with brown ; outer marginal area brown, limited inwardly by 

 a sinuous black line and intersected by an indistinct dusky- 

 bordered whitish line, which terminates in a whitish patch at 

 inner angle. Secondaries have the basal two-thirds sparingly 

 freckled with black ; the outer third is brown, bounded in- 

 wardly by a rather wavy black line and containing two white 

 patches ; the lower, placed at anal angle, is marked with 

 black. Under surface similar to upperside, but there is no 

 brown on basal area of primaries. Fringes : of primaries 

 blackish from costa to second indentation, thence white 

 chequered with black; of secondaries white, marked with 

 brown at the angle. Antennas white marked with black, 

 simple. Head and thorax creamy, the latter sprinkled with 

 black. Abdomen pale brown, marked with white and dotted 

 with black. 



Expanse 65 millim. 



One female specimen from Fu-tsu-fong, June. 



Hob. Western China. 



Biston robustum. 



Biston robmtum, Bull. Ann. & Mag. Nat. Hist. (5) iv. p, 371 (1879). 

 A very fine series from Yokohama in Fryer's collection. 



