334 THE ENTOMOLOGIST. 



ground, and no producing cause being apparent ? I should 

 rather be inclined to suppose that they were deposited by the 

 insects on the platform either just before or during the rain ; 

 but why they were there deposited I cannot hazard a guess. 

 — W. Slade ; London and County Bank, Buckingham^ 

 June 10, 1871. 



Saturnia Carphii. — This year I had a quantity of Carpini 

 pupae, most of which came out in April, yet I have about a 

 dozen still in cocoon. I have looked at them, and find they 

 are alive. When are they likely to come out ? — W. J. Skelton ; 

 The Bounds, near Faversham, Kent, June 22, 1871. 



I have generally found that when Bombyces fail to emerge 

 at the usual time, they emerge at the corresponding period of 

 next year. 



Poecilocampa Populi. — The larva found by Mr. Garrow, 

 feeding on birch, is that of Poecilocampa Populi. 



Edward Newman. 



Description of the Larva of the Beautiful Hooktip. — It 

 lies in a perfectly straight position, with the ventral surface 

 closely appressed to the object on which it is resting, 

 usually the twig or branch or trunk of a tree, or an old rail, 

 or park palings : one condition of this object is indispensable, 

 — it must be clad with the lichens which constitute the sole 

 food of this species, and which it so closely resembles in 

 colour and appearance that it requires the keenest, as well as 

 the most practised, sight to detect its presence; it does not 

 fall readily, and is quite indifferent to the touch of a finger, 

 but if forcibly removed it falls in a limp and flaccid manner, 

 and makes no attempt to roll in a ring or adopt any other 

 expedient for safety or concealment, perhaps because pos- 

 sessed of the intuitive knowledge that its colour and appear- 

 ance sufficiently conceal it from the prying eyes of birds and 

 entomologists; in crawling, its action is that of a half-looper, 

 Catocala for instance, the back being alternately raised and 

 depressed with a gently undulating motion. The head is 

 rather narrower than the second, and decidedly narrower 

 than the third, segment; its position when at rest is semi- 

 prone ; the face is flat, and the crown scarcely perceptibly 

 notched. The body is of nearly uniform width throughout, 



