104 THE ENTOMOLOGIST. 



take care there are no small holes left for the imagines to 

 creep out. 



Sesia culiciformis. — This handsome species is out on the wing 

 in May and June in birch woods. I have taken it in Perthshire, 

 in Wales, in Yorkshire, and at intervals all over the South of 

 England. The instructions for collecting Sesia asiliformis, given 

 above, apply also to this species, excepting that the tops of birch 

 stumps are to be taken instead of oak, and a fortnight or more 

 earlier. It is common in Tilgate Forest, Sussex, and many 

 other localities nearer London. 



Sesia formic if or mis. — The moths flv in the neighbourhood of 

 osier beds in July. I have seen this species in Yorkshire, Derby- 

 shire, and more commonly in the Thames Valley. 



The larvae feed in the inner stems of osiers, and pupate 

 therein early in July, Saw off the tops of osier stumps about 

 that period, and breed the moths in the same way as 

 S. culiciformis. 



Sesia iclineumoniformis. — To find this species, hunt about the 

 middle to end of July on sunny days over warm banks where 

 Lotus corniculatus grows, especially by the sea-side. I have 

 found it near Southend, Essex, and all along the south coast. 



The larvse feed in the leading roots of the food-plant, and are 

 readily traced by the light brown frass being seen at the crown of 

 the root. The best way is to look for sickly plants, as the first 

 indication. Carefully avoid the infested roots becoming too dry 

 in the breeding-cage, and allow free access of morning sunshine. 



Sesia musciformis { philanthiformis) . — This moth seems 

 generally distributed around our south-western and western 

 coasts. I have found traces of it in Devonshire, Cornwall, 

 near Aberystwith and in Carnarvonshire in Wales, Isle of Man, 

 and Ireland. Tbe moths fly at tbe end of June over sea-cliffs, 

 where the common thrift or sea-pink grows. 



The larvse feed in the roots and crowns of the sea-pink, and 

 are easily found, as they slightl}^ discolour the plants. I have 

 noticed that the little stunted plants growing in exposed positions 

 are most affected. The moths are easily reared, if the plants 

 containing the pupse are treated to morning sunshine while in 

 the breeding-cages. 



Sesia, chrysidiformis. — I have not had an opportunity of 

 collecting this species in an}^ stage, so I cannot do better than 



