Heterocera from China, Japan, and Corea. 307 
123. Somera cyanea. 
Somera cyanea, Leech, Proc. Zool. Soc. Lond., 1888, p. 642, 
pl. xxxul, fig. 5. 
Seven specimens in Pryer’s collection from Yokohama 
and Gifu. 
Hab. JAPAN. 
Genus CERURA. 
Schrank ; Hampson, Fauna Brit. Ind., Moths, i, p. 155 
(1892). 
124, Cerura furcula. 
Bombyx furcula, Linn., Faun. Suec., p. 298 (1761) ; Hiibn., 
Bomb., fig. 39 (1800). 
Cerura sangaica, Moore, Ann. and Mag. Nat. Hist., (4) xx, 
p. 90 (1877). 
I obtained one specimen at Gensan in June. 
As the band in sangaica is generally narrower than in 
typical C. furcula the name might be retained for this 
Eastern Asian form of the species. 
Distribution. EUROPE.—AMURLAND; COREA; NoRTH- 
East CHINA. 
125. Cerura lanigera. 
Cerura lanigera, Butl., Ann. and Mag. Nat. Hist., (4) xx, 
p. 474 (1877) ; Ill. Typ. Lep. Het., iii, p. 10, pl. xliii, 
fig. 11 (1879). 
Cerura furcula (part), Leech., Proc. Zool. Soc. Lond., 1888, 
p. 644. 
There were four specimens from Yokohama in Pryer’s 
collection. These I referred, in error, to C. fwrcula instead 
of to C. bifida, from which species they are hardly separ- 
able and of which they may be the Eastern Asian repre- 
sentatives. The central band is not always constricted in 
the middle as mentioned in the description of C. lanigera 
and in some European examples of C. bifida the central 
band is constricted to the same extent as in typical C 
lanigera. 
One of the four examples from Japan is without any 
trace of the central band. 
Staudinger and Pryer state that the larva of C. lanigera 
feeds on both willow and poplar. 
Distribution. AMURLAND; COREA; JAPAN. 
