278 Mr. J. H. Leech on 
Genus DILINA. 
Dalm., Vet. Akad. Handl., 1816, p. 212. 
38. Dilina christophi. 
Smerinthus christophi, Staud., Rom. sur Lép., iii, p. 162, 
pl. ix, figs. 3a, 6, and pl. xi, fig. 1 (1887). 
Dilina christophi, Kirby, Cat. Lep. Het., p. 709 (1892). 
There were specimens from Fujisan and Yesso in Pryer’s 
collection. 
This species, which is closely allied to D. tiliw, can be 
readily separated by the absence of any green coloration, 
by the contour of the central fascia, and by the uniform 
dark brown colour of the thorax. Although my series of 
D. tiie comprises 165 specimens and includes all the 
known aberrations, there is nothing among them that could 
be mistaken for D. christophi. 
The larva feeds on Alnus incana, W., and is stated to 
resemble that of D. tilix very closely. 
Distribution. AMURLAND; JAPAN; YESSO. 
Genus SMERINTHUS. 
Latr., Hist. Nat. Ins., ii, p. 401 (1802). 
39, Smerinthus ocellatus. 
Sphinu ocellata, Linn., Syst. Nat., i, p. 489 (1758). 
Smerinthus ocellatus, Kirby, Cat. Lep. Het., p. 711 (1892) 
Smerinthus planus, Walk., Cat. Lep. Het., viii, p. 254 
(1856). 
Smerinthus argus, Mén., Lep. Mus. Petr., p. 126, pl. xiii, 
. fig. 3 (1857). 
There were specimens from Yokohama in Pryer’s 
collection. I obtained the species at Gensan, and have 
received it from Chang-yang and Kiukiang. 
The differences between planus (=argus) and ocellatus 
indicated by Staudinger (Rom. sur Lép., vi, p. 236) do 
not hold good in my series from Japan, Corea, and North 
China when they are compared with European specimens. 
The Asiatic examples usually have the ocellus larger than 
those from Europe, but this is not invariably the case. 
Distribution. EUROPE.—JAPAN ; COREA; AMURLAND ; 
NORTHERN and CENTRAL CHINA. 
