290 



The date of the appearance of the caterpillar is in 

 June and July. 



It feeds in the stems of the ragwort, (Senecio nemorensis,) 

 etc. 



PTEROPHORUS 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 farfaraJ) 



PTEROPHORUS ZETTERSTEDTII. 

 Plate CXXXI. Figure 22. 



Localities for this species are at Lynmouth. 



The perfect insect appears in July. 



It feeds on the ragwort, (Senecio nemorensis.) 



