289 



PTEROPHORUS DICHRODACTYLUS. 

 Plate CXXXI. Figure 19. 



Localities for this species are Scarborough, Warrington, 

 Chudleigh. 



The perfect insect appears in July and August 

 July 5. 



The date of the appearance of the caterpillar is at 

 the end of June and in July. 



It feeds on the tansy, (Tanacetum vulgare.) 



I am obliged to H. T. Stainton, Esq., for the loan of 

 a specimen of the present species for the use of this 

 work. 



The drawing from which the engraving has been made, 

 has been obligingly forwarded to me for the use of this 

 work by C. S. Gregson, Esq., as have also drawings or 

 specimens of the whole of the genus. I am placed under 

 very deep obligations to him for unvarying kindness and 

 assistance in every possible way. 



PTEROPHORUS ISODACTYLUS. 

 Plate CXXXI. Figure 20. 



Localities for this species are Orkney, Killarney, and 

 Teignmouth. 



The perfect insect appears in July and August. 



