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PTEROPHORUS SPILODACTYLUS. 
Plate CXXXII. Figure 23. 
Localities for this species are Brighton and the Isle 
of Wight. 
The perfect insect appears in July. 
The date of the appearance of the caterpillar is in 
May and June. 
It feeds on the horehound (Marrulium vulgarc). 
rTEROPIIORUS BALIODACTYLUS. 
Plate CXXXII. Figure 24. 
Localities for this species are Lewes, Folkestone, 
Bristol, Mickleham, etc. 
The situations where it is found are chalk pits and 
gravel pits. 
The perfect insect appears in July. 
PTEROPHORUS TETRADACTYLUS. 
Plate CXXXII. Figure 25. 
Localities for this species are York, Scarborough, 
Lewes, Llauferras, Howth, Isle of Man, Scoot Scar, 
Witherslack, Alkham, Bristol, Cambridge, Darlington, 
Newcastle-on-Tyne. 
The situations where it is found are places “ where¬ 
on the wild thyme grows.” 
