52 IN MEMORIAM. 



the white down from the underside of the leaf in an unin- 

 terrupted strip, and shoves it in little rolls beneath its body. 

 These rolls of down then remain hanging to the underside 

 of the leaf, and give it a peculiar appearance as though 

 banded transversely. It assumes the pupa state horizontally 

 on the food plant, and the larval skin hangs as a white 

 lump to the tail end. 



The perfect insect makes its appearance the middle of 

 August, yet I found it sparingly at the same time as the 

 larvae, when it sat gregariously on the flower of the plant, 

 or on some neighbouring plants of Scabiosa. 



The Jurinea grows very abundantly on the Mombach 

 Sands near Mayence, but I have never found the Plume 

 there. (1858.) 



Alucita dodecadactyla, Hb., Heydcn (E. Z. 1861 

 p. 42). The larva has a very peculiar mode of life. It 

 occurs at Bingen on the Rhine at the end of June and 

 beginning of July in swellings on the last year's twigs of 

 honeysuckle (Lonicera a.ylostemii) ; to this my attention 

 was first called by Herr Karl Wagner. These swellings 

 are not thick, and often scarcely perceptible, and are from 

 one to two inches long. The larva feeds on the pith of the 

 twig. At the beginning of July it quits its domicile through 

 a small hole, and spins a flat transparent net-work cocoon 

 on the ground amongst old leaves, or on stones, &c., and 

 changes therein to the pupa state ; the perfect insect ap- 

 pearing the beginning of August. 



Having now concluded this monument to the memory of 

 my late lamented friend, whose acquaintance I first made 

 in 1855, whom I subsequently met in 1857, 1859, 1861, 

 1862, 1863, and 1865- and with whom I have repeatedly 



