106 THE ENTOMOLOGIST. 



In my garden at Leyden I had, among other roses, a parti- 

 cularly fine French rose bush, one of the shoots of which I had 

 observed to be bent and withered in the manner described to me ; 

 in fact, I should not be surprised if I had directed Professor 

 Westwood's attention to it on the occasion of one of his visits, 

 and that this may have led to his sending me the larva in 

 question ; however, it was so long ago that I cannot be certain 

 on this point ; anyhow, I examined my rose bush from time to 

 time, and in June, 1865, I found, not only on the said rose bush, 

 but also on others, several damaged shoots. I found one on the 

 1st of that month, and put it into spirits ; on the 8th and 10th I 

 put some of the twigs into some mould in a bottle, as I had found 

 in the garden several twigs which had evidently been bored into, 

 and from which the larvae had disappeared, so that I concluded 

 they changed to the pupa state in the ground, and not, like 

 Emphytus cinctus, within the shoot. 



Of one of these larvae I made a drawing (fig. 3), and I at the 

 same time made a sketch of the twig, as it was bent round, b}'^ 

 which the habitat of the insect can be recognised (fig. la.) The 

 shoot, after being distorted in this wa}^ ceases to grow, and 

 withers. The larva was moderately thick, and of a sordid yellow 

 colour, somewhat clearer as to the anterior three segments, the 

 alimentary canal appearing of a brownish colour, as seen through 

 the skin. So far as I could make out, I observed twenty legs ; 

 the abdominal legs were, however, remarkably short, or else they 

 were always too much drawn up into the skin. The head was 

 smooth and globular, ochreous yellow in colour, the mandibles 

 being ochre-brown; the palpi below the eyes were moderately 

 long, the eyes themselves being inserted in round dark grey, 

 almost black, spots. 



The stigmata were very oblong, elliptic, and had grey borders. 

 I failed to observe any hairs on any part of the body, and the 

 claws of the thoracic legs were white, not brown, as is usually the 

 case. At figure 2 I have represented this larva head downwards, 

 as it attempts to conceal itself in a rose twig, which it had 

 hollowed out, and which I tore open from the top, but I am 

 entirely unacquainted with the earlier stages of its growth. I 

 once, some years ago, received from Mr. Ver Loren a little yellow 

 Tenthredo larva, which had been found in the rolled-up edge of a 

 rose leaf; the agreement in colour and appearance, and also the 



