290 
The date of the appearance of the caterpillar is in 
June and July. 
It feeds in the stems of the ragwort (Senecio ne?no- 
rensis ), etc. 
PTEROPIIORUS GONODACTYLUS. 
Plate CXXXI. Figure 21. 
Localities for this very common species are York, 
Scarborough, Market Harborough, Newcastle-on-Tyne, 
Manchester,Darlington, Cambridge, Bristol,Birkenhead. 
The perfect insect appears in May and June. 
The date of the appearance of the caterpillar is in 
March and April. 
It feeds on the coltsfoot (Tussilago far/ara). 
PTEROPIIORUS ZETTERSTEDTIL 
Plate CXXXI. Figure 22. 
Localities for this species are at Lynmouth. 
The perfect insect appears in July. 
It feeds on the ragwort (Senecio nemorensis ). 
