74 LUPERINA TESTACEA. 



length, rather thick and stumpy in repose, cylindrical, 

 yet tapering a little at the two hinder segments, and a 

 little from the third segment to the head, which is of 

 a full and rounded form, though the lobes are well de- 

 fined by the skin between them in a point on the crown ; 

 the legs are all well beneath the body, as often occurs 

 with larvae of burrowing habits ; but it is totally unlike 

 any other larva I as yet know ; it has no dots or spots 

 whence the minute hairs proceed, though with a strong 

 lens the hairs are seen to spring from the situations 

 where such dots would be in most Noctua larvas. The 

 anal plate is peculiar ; it is rounded off behind rather 

 abruptly, and is rather concave onits surface — aremark- 

 able character in contrast with the convex surfaces of 

 the other segments, all of which on the back are trans- 

 versely divided with deep wrinkles into prominent 

 ridges, most pronounced on the twelfth and front por- 

 tion of the thirteenth segment ; the rather concave anal 

 plate divided by two deep semicircular wrinkles into 

 three ridges ; on most of the segments each front half 

 on the back is by comparison almost smooth, though, 

 in fact, every part of the skin there, and particularly on 

 the ridges, is, by the aid of a lens, seen to be scored with 

 minute wrinkles; in short, its external anatomy is marked 

 by very deep channels between the muscles on a very 

 finely wrinkled skin, which glistens rather than shines. 

 In colour the glossy head is light brownish-yellow, the 

 plate behind it rather paler and shining, the body 

 generally a deepish flesh- colour, often of a livid tint 

 of faint greyish flesh-colour, the ridges of the back 

 and sides invariably with more colour than in the 

 deep hollow wrinkles, which are paler and purer flesh- 

 colour, smooth without glistening, and at the seg- 

 mental divisions also ; the colour on the back of the 

 two hinder segments grows darker by degrees, espe- 

 cially on the ridges, culminating in darkish brown on 

 the front division of the anal plate. The mouth dark 

 brown. The spiracles deep flesh-colour, strongly out- 

 lined with black. 



