of Lepidoptera Heterocera from Japan. 303 
234. 
Gonodontis bidentata. 
Geometra bidentata, Clerck, Icon., vii, 2 (1759-64). 
Gonodontis bidentata, Staud., Cat. Lep. pal. i, p. 328 
(1901). 
Staudinger records this species from Japan, unrecorded 
by Leech. 
General distribution. KUROPE; ALTAI MOUNTAINS; 
TARBAGATAI; Moncoiia; East SIBERIA (Amutland, 
Ussuri); JAPAN. 
Genus HYGROCHROA. 
Hiibner, Verz., p. 293 (1827). 
235. 
Hygrochroa parva. 
Pericallia parva, Hedem., Horae. Ent. Ross., xvi, p. 45 
(1881). 
Pericallia syringaria, var. parva. Staud., Ins, x, p. 31 
(1897); Cat. Lep. pal., i, p. 328 (1901). 
Hygrochroa distans, Warr., Nov. Zool., ii, p. 143 (1895). 
Pericallia distans, Leech, Ann. and Mag. Nat. Hist. (6), 
xix, p. 207 (1897). 
I bred twenty-one male and female specimens of 1. parva 
in July, 1902, from larvae taken at Hakodate at the end 
of June and commencement of July on Lbota (Ligustrum 
ibota, Sieb.), a species of privet, and consider that parva 
is a good species quite distinct from H. syringaria, L. 
Staudinger’s catalogue treats this species as a variety of 
syringaria. The larvae of parva appear at the end of 
June and commencement of July, whilst those of syringaria, 
which I have also bred, appear in Hakodate at the com- 
mencement of June. The larvae of the two species are 
also quite different. Parva has paired dorsal warts on the 
sixth, seventh, eighth and ninth segments and lacks the 
paired, long curved hooks on the eighth segment which is 
the distinguishing feature of syringaria larva. Moreover 
the colour of parva and syringaria larvae is different, but 
the absence of the long curved hooks in parva is of 
course the most important character. My specimens of 
parva emerged from the pupa between July 18 and 28, 
2a a Ne 
