ACEOBASIS ANGUSTELLA. 231 



mencing broad, becomes narrower, and finishes behind 

 in a fine point; the subdorsal markings, on the contrary, 

 commence with the point of a wedge shape, growing 

 irregularly wider backwards, and intersected near their 

 base by transverse lines of the ground colour; on the 

 twelfth segment these subdorsal marks unite behind, 

 and on the thirteenth are darker in colour; below the 

 subdorsal series comes another, very similar in shape, 

 but arranged with the broad part at the beginning, 

 and of the same colour. The head is dark brown, and 

 there is a broad brown plate on the second segment 

 with a black oval spot on each side of it behind. 



The tubercular dots are not conspicuous, being of 

 the same colour as the brown markings in which they 

 are placed ; but each of them is furnished with a minute 

 flesh-coloured hair. The spiracles are exceedingly 

 small, of a pale purplish-brown, invisible without a 

 lens. 



The larvae spun up within rotten wood, and the 

 perfect insects appeared on the 18th and 26th of July, 

 1869. (William Buckler, October, 1869; E.M.M., 

 November, 1869, VI, 143.) 



On the 22nd of October last, 1878, I received a box 

 •of larvae of Nephopteri/x ancfustella from Mr. J. P. 

 Barrett, of Peckham. He had collected them about a 

 fortnight before from the red seed-berries of the 

 spindle, and at that time they were very small, 

 though there were evident traces of an earlier brood 

 in some of the berries, apparently of full-fed larvae. 

 They were plentiful wherever a bush could be found 

 with berries on it, but in exposed situations there were 

 very few bushes. Those found grew rapidly, and 

 when I received them many were apparently full- 

 fed. 



Length about half an inch or a little over, and of 

 moderate bulk in proportion ; the head is highly 

 polished, has the lobes rounded, is slightly narrower 

 than the second, and clearly narrower than the third 

 segment. Body cylindrical and nearly uniform, 



