280 THE entomologist's record. 



somewhat rounded, hardly angulated in front, the posterior margin is 

 straight on either side, meeting medially behind at about aright angle, 

 the whole somewhat diamond-shaped. It is pale, with pale median 

 line, a black line, broad at middle, runs outward, narrowing along each 

 side of the posterior border, there is a black line on each side of the 

 dorsum, not reaching the posterior margin, and numerous black 

 (hair) spots, also several small ill-marked lenticles (pi. xiii., fig. 6). 

 When the larva is sulky the plate sinks in and is overlapped by 

 the margin of the segment round it, while just posterior to it is 

 a small representative of the dorsal humps, yellowish. The area 

 between the subspiracular and marginal flanges is reddish violet, 

 below the marginal flange orange with violet tinting. The true legs 

 are black, last joint brown. The head ochreous-brown, wath a darker 

 (hardly black) lower margin. First section of labrum pale (membrane), 

 next brown, eyes black, outline of clypeus black, labium brown, trophi 

 beneath pale. The general surface is clothed with short black hairs, 

 not definitely distinguishable from those on the humps, as they grade 

 into them. They are short and straight dorsally ; in the spiracular 

 region they are extremely short, and are curved into a hook, or 

 acutely bent almost at right angles. They are not arranged in any 

 lines definitely describable, but their numbers are about ten or eleven 

 from the dorsum down to the spiracles, and eight or nine from back to 

 front of a segment. Lenticles still exist, but are very minute and 

 easily overlooked ; they are most numerous on the outer " slope," 

 above the oblique stripe. In the centre of the oblique stripe is still 

 a depression, much as if the skin were here fastened down to some- 

 thing beneath, and there is a curious little white, buried-looking line 

 running upwards from the incision (?) between the flanges on the first 

 six abdominal segments. The depth of the incision (?) between the 

 two flanges in the full-grown larva is very remarkable (pi. xiii., fig. 3). 

 The spiracles consist of a black polished raised rim. 



June 8th. — The two larvae that were supposed nearly fulifed a few 

 clays ago are still eating voraciously, and have grown thicker, if not longer 

 (pi. xi., fig. 3). The width is 6mm. and even 6-50mm., and the thickness 

 5-5mm. and even 7-Omui. when sulky, the leiigth (slightly curled is 

 then only 14mm.), stretched 24mm. The colours are a little difierent, 

 the lower side has quite a greenish tone, and all over the prominences, 

 especially the lateral flange, there is the appearance (and fact), visible 

 in the larvae of Cochlidids and other Lyctenids, as if the skin was a nearly 

 colourless pellicle, separated from the true coloured structure beneath 

 by a layer of clear fluid. Seen dorsally he is a very harlequin ; abdominal 

 seiiinents 2 to 6 are coloured in very much the same tints and patterns, 

 and so are the thoracic segments 2 and 3, to a very close degree, but with 

 more red, the 1st thoracic is essentially the same in some respects. The 

 dorsal humps, seen dorsally, are yellow, seen laterally the yellow is 

 within, the hump itself transparent, between them the dorsum has five 

 longitudinal lines, a dark chocolate centre, and on each side a whitish 

 and" then a reddish-chocolate one, between the humps the red lines 

 coalesce, blocking the pale ones, behind the humps the segment is right 

 across (above the lateral flange) abruptly cut ofl", forming a steep slope 

 facing backwards, and colourless except for the central dorsal line. 

 The outer sides of the yellow dorsal hump have a faint reddish tint or 

 may be bright red-orange, then a pale band above the oblique stripe 



