322 Mr. J. H. Leecli on Lepidoptera Heterocera 



curved. Larger than P. pedariay and the thorax is far less 

 robust. 



Expanse 48-58 rnillim. 



Four male specimens from Yokohama in Fryer's collection. 



Hah. Japan. 



Genus Zamacra. 

 (Me:>Tick, Traus. Eut. Soc. Lond. 1892, ]). 121.) 



Zamacra alhofasciaria. 

 Apocheima alhofasciaria, Leech, Eutom., Suppl. ]). 48 (May 1891). 



Three male specimens from Yokohama in Pryer's col- 

 lection. 



Hah. Japan. 



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

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

 placed in Apocheimaj Hiibn. 



Genus BiSTON. 

 (Leach ; Hampson, Fauua Brit. Ind., Moths, iii. p. 2-15 (lS9o).) 



Biston emarginaria^ sp. n. (PI. VIL fig. 8.) 



Outer margins of all the wings \\ ith two deej) indentations. 



Female. — Primaries white, sparingly freckled with bh\ck ; 

 the basal area limited by an angulated black line and clouded 

 Avith 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 uppersidc, 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. Antennte white marked with black, 

 sim])le. 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 Pu-tsu-fong, June. 



Hah. "Western China. 



Biston rohustum. 

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

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



