276 Mr. J. H. Leech on 
Subfamily SUERINTHIN A, 
[Genus POLYPTYCHUS. 
Hiibn.; Hampson, Fauna Brit. Ind., Moths, i, p. 68 
(1892). 
34. Polyptychus dyras. 
Smerinthus dyras, Walk., Cat. Lep. Het., viii, p. 250 
1856). 
Ce dyras, Kirby, Cat. Lep. Het., i, p. 708 (1892). 
Triptogon cristata, Butl., Proc. Zool. Soc. Lond., 1875, 
253: 
Seah sperchius, Mén., Lep. Mus. Petr., ii, p. 137, 
pl. xiii, fig. 5 (1857). 
Triptogon piceipennis, Butl., Ann. and Mag. Nat. Hist., (4) 
xx, p. 393 (1877); Ill. Typ. Lep. Het., 11, p. 2, pl. xxi, 
fig. 4 (1878). 
Polyptychus dyras, Hampson, Fauna Brit. Ind., Moths, i, 
p. 69 (1892). 
There was a nice series of this variable species in Pryer’s 
collection. I met with examples at Tsuruga in July and 
received one specimen, captured in June, at Moupin; all 
these are of the sperchius or piceipennis form. One male 
taken at Omei-shan in June is referable to cristata, Butl. 
Pryer states that the larva in Japan feeds upon 
chestnut. 
Distribution. NortH INDIA; WESTERN CHINA; JAPAN ; 
KIUSHIU. 
35. Polyptychus echephron. 
Smerinthus echephron, Boisd., Spec. Gén. Lép., Het., 1, 
p. 21, pl. iu, fig. 3 (1875). 
Marumba echephron, Kirby, Cat. Lep. Het., i, p. 706 
(1892). 
Described from Japan and probably a form of P. dyras 
Walk. 
Hab, JAPAN. 
36. Polyptychus gaschkewitsehit. 
Smerinthus gaschkewitschit, Brem, and Gray, Motsch. Etud, 
Ent., 1, p. 62 (1852); Schmett. nord. China, p. 18, 
pl. v, fig. 2 (1853). 
