230 ACKOBAS18 C0NS0C1ELLA. 



Drawing together leaves of oak, it gnaws away the 

 under surface and makes a dense web among them. 



The pupa is light brown, in a silken cocoon, covered 

 with frass, and fixed to the surface of a leaf or to the 

 web. 



I remember similar larvas in the South of England, 

 and, as they have been before described and are well 

 known, I am only induced to note these particulars 

 because Professor Zeller has described the larva, in 

 the ' Isis,' as " sulphur-yelloiv, with fine brown longi- 

 tudinal lines and small black raised dots." The other 

 particulars agree so well that I think the larva of this 

 species must vary considerably in colour. (C. G. 

 Barrett, 8th October, 1878; EJLM., January, 1879, 

 XV, 182.) 



ACROBASIS ANGUSTKLLA. 



Plate CLVIII, fig. 1. 



On the 30th of September, 1868, Mr. Machin kindly 

 sent me two larvse of Nephopteryx angustella feeding 

 on the fruit of Etwnymus europzms, and from them I 

 have drawn up the following description : 



The full-grown larva is five-eighths of an inch in 

 length, cylindrical, and moderately plump, the two 

 hinder segments rapidly tapering almost to a point, 

 the second tapering a little to the head, which is small 

 and flattened ; the segmental divisions are rather 

 deeply defined. 



The ground colour of the body and legs is a flesh 

 tint, having the slightest suspicion of yellowish-green 

 in it; on the upper surface there are five longitudinal 

 series of dull red-brown markings, extending on each 

 segment from its commencement to about two-thirds 

 of its length backwards, and leaving the remaining 

 third of the segment in appearance like a pale band. 

 On each segment from the second to the eleventh the 

 markings are to be seen as follows : — The dorsal, com- 



