244! [October, 



of lighter rings ; palpi and legs greyish-oehreous, the last joint of palpi with 

 the tip and a ring at base fuscous, and legs with fuscous markings externally and 

 the tarsi ringed with fuscous below the joints ; abdomen pale fuscous, with greyish- 

 oehreous tip. 



In the streaked var. the blackish spots are more or less obscured by a longitu- 

 dinal blotch of similar colour, which runs from the base to the end of the discoidal 

 cell, and is thence continued as a very narrow blackish line to the tip. There is also 

 frequently more or less grey shading oyer the whole fore-wing, but the pale fascia is 

 still distinct. The hind-wings are also rather black. 



This species varies much, but may be known from sucedella by its 

 want of the bright pale ochreous inner margin and other parts, and 

 especially by the presence of a pale fascia. The blackish spots are 

 not generally all present, and are often partially or wholly replaced by 

 rusty-brown spots; in fact, I always associate this species with the 

 brownish colour, which sometimes pervades the whole wing. This 

 replacement of black scales by brown ones is more or less characteristic 

 of several species of this group, but is much the most strikingly de- 

 veloped in instahilella and salicornicB. Sometimes the wing is marbled 

 here and there with whitish scales, and ochreous scales are also some- 

 times present, especially along the subcostal and inner folds, but the 

 slaty scales marking out the veins, though occasionally partially 

 traceable, are not distinct as in sucedella. The whole appearance is 

 duller, and more greyish than ochreous, and, except in extreme cases, 

 where all markings are more or less obsolete, there is no difficulty in 

 separating specimens of these two species. 



The following is a description of the larva of L. sucedella, taken 

 May 29th, 1889 :— 



Length, about 5"'. Rather stout, tapering a little in the first two and last two 

 segments. Head rather flat, and about half the width of body. 



Head, prothoracic and anal plates and legs, shining black. 



Ground-colour of body very light olive-green ; 3rd and 4th segments darker 

 than the rest, sometimes strikingly so, the back a little lighter, more inclining to 

 glaucous than the under-side ; the last two or three segments sometimes tinged with 

 yellow. The dorsal line (straight and of regular width), subdorsal line (which is 

 made up of a short, thick, longitudinal line on the front of each segment, joined to 

 a similar thinner line just below on the hinder half of the segment), and wavy spi- 

 racular line, and the usual warts, are reddish-chocolate and distinct. The warts are 

 darker than the lines, and placed in a small patch of the ground-colour. 



The larva is moderately active. It spins a silken tube along a 

 shoot of Sucdda, near to or against the stalk amongst the fleshy leaves, 

 which it eats partially thi-ough as it proceeds, generally choosing a 



