MR, A. G. BUTLER ON THE SPHINGIDA. 593 
Californian Lepidoptera. A female example of a species fromm Vancouver's Island is 
also in the collection; although rather a larger insect, it approaches very close to S. 
ophthalmicus 2, as figured by Strecker, but has the primaries of a much browner tint, 
as in S. ocellatus, and less excavated below external angle; the central band forms a 
large oblong patch on inner margin ; and the whitish submarginal streak is less distinct. 
The secondaries are bright rose-colour, excepting a narrow buff outer border and a 
diffused whitish patch at anal angle; the ocellus is larger. I propose to call it S. van- 
couveriensis. 
3. SMERINTHUS PLANUS. (Plate XCII. fig. 11.) 
Smerinthus planus, Walker, Lep. Het. viii. p. 254. no. 18 (1856). 
3, North China (Cuming); ?, Shanghai. Type, B.M. 
The larva is pale green, with white or yellow lateral stripes. It feeds on the 
* Yanagi,” or weeping willow. (Geo. Lewis, in litt.) 
4, SMERINTHUS ARGUS. 
Smerinthus argus, Ménétriés, Enum. Corp. Anim. Mus. Imp. Acad. Sci, Petrop. ii. p. 136. no. 1561, 
tab. xiii. fig. 3 (1857). 
Amur Land. 
Probably a local form of the preceding, from which it chiefly differs in being much 
paler. 
5. SMERINTHUS TATARINOVI. (Plate XC. fig. 16.) 
Smerinthus tatarinovii, Motschulsky, Etudes Entom, p. 62 (1852) ; Ménétriés, Enum. Corp. Anim. 
Mus. Imp. Acad. Sci. Petrop. ii. tab. xiii. fig. 1 (1857). 
Japan (Fortune). B.M. 
The larva of S. tatarinovii is figured among the unpublished drawings prepared for 
Mr. Lewis in Japan. It is pale sea-green, tuberculated with white, with seven lateral 
oblique crimson-edged white stripes; the horn red-brown or sordid rose-colour ; pro- 
legs yellowish. 
Genus 15, PsEUDOSMERINTHUS, n. gen. 
At once distinguished from Basiana by its short and strongly falcated primaries, with 
short outer margin, and with the inner margin strongly excavated below external angle ; 
prothorax very short; head small; palpi very short, not visible from above’; antennz 
short, slender; secondaries subpyriform ; upper discocellular longer than lower, oblique, 
strongly concave. 
4k 2 
