338 PTER0PH0RUS RHODODACTYLUS. 



young shoots. When full-grown, those that have 

 been feeding on the buds affix themselves to the side 

 of the leaf close by the bud, and draw the leaf and the 

 bud together by means of a few silken threads ; the 

 others draw together in a similar way several leaves 

 at the end of the young shoot. 



The pupa is about three-eighths to half an inch in 

 length ; it is pale green, with the wing-cases whitish, 

 and the eye-, antenna-, and leg-cases, and also the 

 edging of the wing-cases, smoky-black. 



On a subsequent visit to the locality, near Roches- 

 ter, in the middle of July, I found a few of the pupae, 

 from which, in a few days, I reared some beautiful 

 imagos of this lovely species. 



The moth first appears at the beginning of July> 

 and continues to emerge throughout the month. 

 (George T. Porritt, 3rd August, 1875; E.M.M., 

 September, 1875, XII, 88.) 



Pterophorus ochrodactylus. 

 Plate CLXIII, fig. 3. 



On the 8th of June, 1875, Mr. John Sang, of 

 Darlington, very kindly sent me several larvae of 

 Pterophorus dichrodactylus, in various stages of growth, 

 mining within stems of Tanacetum vulgar e. 



As soon as their food began to wither, fresh sprays 

 of tansy were provided for the larvae, which, often as 

 this occurred, readily left the old stems to commence 

 mining into the fresh ones. 



The mouth of the mine is generally between the axil 

 of a leaf and the stem, with a few silk threads spun 

 from one to the other, just above it, among which the 

 dark olive or blackish frass becomes entangled, as the 

 larva pushes it out from time to time in its course 

 head downward ; the quantity there increases more 

 and more, until at length the accumulation becomes 



