40 NONAGRIA ELYMI. 



was reddish-brown, blackish-brown about the mouth ; 

 the plate on the second segment pale yellowish-brown, 

 two pairs of pale, oblong, yellow-brown spots were on 

 the front division of the thirteenth segment, the anal 

 flap covered with a plate of the same colour, having 

 behind a fringe of fine brown bristles ; the tubercular 

 dots of the back, and their excessively short bristles, 

 were so very small as to be invisible without a powerful 

 lens ; the anterior legs were pale brown, the prolegs 

 tipped with dark brown. 



The pupa varied from five-eighths to three-quarters 

 of an inch in length ; it was rather slender in form, 

 smooth and shining, and of a light brown colour. 

 (W. B., 11, 7, 71; E.M.M., VIII, 68, 1871.) 



NONAGRIA NEURICA. 



Plate LXI, fig. 1. 



On the 30th June, 1870, several larvae of this species 

 were forwarded to me by the Hon. Thomas de Grey, 

 who very kindly sent me some of a number he had 

 taken in the Norfolk fens, that I might not only figure 

 the larva and pupa, bat also breed the imago ; unfortu- 

 nately, however, whilst he had the good luck to breed 

 four imagos on July 27th, all my larvae were infested 

 with dipterous parasites, so that I did not see the 

 pupa, nor have I since been able to obtain more 

 examples. 



The larvae were inhabiting pieces of the stems of 

 Arundo phragmites, which had evidently been cut from 

 the upper portions of the reeds, as they were perfectly 

 fresh and green, varying in diameter from a quarter to 

 three-eighths of an inch, and about fourteen to sixteen 

 inches in length, and more or less sheathed with green 

 leaves. The sign of a stem being tenanted by this 

 larva was a small circular hole about a line in dia- 

 meter, situated about five inches above the joint of the 



