150 THE ENTOMOLOGIST. 



it on a small birch tree : whilst placing it there I caught 

 sight of another more fully grown ; and a further search 

 revealed six more. They were all just at the top of the twig 

 on which they were resting. Whilst watching them I found 

 they were never in the morning on the twig on which they 

 had been the day preceding, and that they moved their 

 position between nine and eleven in the evening : between 

 these hours they turned their heads towards the trunk of the 

 tree, and travelled till they arrived at a fork in the branch, 

 when they would diverge towards a fresh position. They are 

 always attached to the twig by their claspers, never to any 

 portion of a leaf. — [Rev.] P. H. Jennings ; Longjield Rectory, 

 Gravesend, June 21, 1872. 



Epione Apiciaria. — I have this season bred eight larvae 

 from eggs laid at the same time by one female : the first 

 appeared about the middle of April; the last just a month 

 afterwards. Is it usual for so long a time to elapse in the 

 hatching of the eggs of this insect ? — Id. 



Entomologists will please state their experience. 



Butterflies Migrating. — The notice by Mr. C. Pocklington 

 of a butterfly falling into the sea in Boston Deeps, and rising 

 again " apparently refreshed by its resting there," and your 

 editorial quotation from Mr. Newman in support of this habit 

 of voluntarily resting for a time on the water, are of consider- 

 able interest to me, as they may perhaps remove a difficulty 

 1 have long felt with respect to what I believe is a true 

 migration of butterflies from India to Ceylon. Lepidopterists 

 are no doubt aware of the flights of butterflies which have 

 been observed periodically in each year working their way 

 from the south of Ceylon towards the north. These migra- 

 tions take place in different parts of the country and at 

 different times of the year, but they have not been traced 

 beyond the island, and their object has not been ascertained. 

 Sir Emerson Tennent speaks of their j^assage in April and 

 May, and they may be observed in the middle of November 

 every year at Colombo, fighting their way against the strong 

 northerly wind. Although most of these flights consist of 

 white and yellow species, they also include (in November) a 

 great number of the black and red swallowtail (Papilio 

 Hector), and many of the large black and yellow P. Darsius. 

 It is worthy of note that the migrations are always made 

 against the wind, and that no return flights have been 



