ME. A. G. BUTLBE ON THE SPHINGID^. 593 



Californian Lepidoptera. A female example of a species from Vancouver's Island is 

 also in the collection ; although rather a larger insect, it approaches very close to 8. 

 ophthalmicus S , as figiired by Strecker, but has the primaries of a much brovraer 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- 

 couverieiisis. 



3. Smekinthus planus. (Plate XCII. fig. 11.) 

 Smerinthus planus , Walker, Lep. Het. viii. p. 354. no. 18 (1856). 



<?, North China (ft«mOT^); S, 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 akgus. 



Smerinthus argus, Menetries, 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. Smekinthus tatarinovii. (Plate XC. fig. 16.) 



Smerinthus tatarinovii, Motschulsky, Etudes Entom. p. 62 (1852) ; Menetries, 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The larva of S. tatarinovii is figured among the unpublished drawings prepared for 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 13. 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'; antennse 

 short, slender ; secondaries subpyriform ; upper discocellular longer than lower, oblique, 

 strongly concave. 



4k 2 



