16 Injurious and beneficial Insects. 



form, and three times as wide as long. The upper lip (labrum) 

 is thin, hairy, transversely elliptical, a little less than one-half 

 as long as broad. The basal chin piece (submentum) is a large 

 transversely oblong area, with the front edge piceous, and very 

 slightly liollowed, while the posterior edge is very deeply hol- 

 lowed out. The chin (mentum) is nearly square, widening at 

 the base, which is continuous with the base of the maxilla), the 

 whole posterior edge being well rounded. The labial palpi are 

 three-jointed, thq basal joints of each palpus being large, and no 

 longer than broad, and touching each other ; the second joint is 

 much slenderer, and about half as thick as the basal joint ; the 

 third joint is not quite so long, and is scarcely half as thick as 

 the second ; its tip is acute and reaches out as far as the end of 

 the second joint of the maxillary palpi. The maxillary palpi 

 are four-jointed, very broad at the base ; the first joint is scarce- 

 ly half as long as broad ; the third is a little longer than the 

 second, while the fourth is much slenderer than the others, and 

 about the length of the second joint. The mandibles are large 

 and powerful, when closed not reaching as far as the end of the 

 maxillary palpi ; the ends are truncated, gouge-like. On the 

 prothorax is a large, obscurely marked, squarish, very slightly 

 horny (chitinous) area, scattered over with hairs, especially on 

 the anterior edge. On the upper side of each segment of the body 

 is a broad oval area, with a series of oval gatherings or folds, on 

 .each side of the transverse mesial main fold ; those on the three 

 rings succeeding the head (thoracic) are the same, but broader. 

 There are no rudimentary thoracic legs. The end of the abdo- 

 men is blunt, well rounded, with the extreme tip forming a 

 rounded portion. It is .35 of an inch in length. 



The pupa is white, and la the single specimen observed was 

 ■quite far advanced, the body being covered with hairs. The 

 wings were quite free from the body, and the antenna? curved 

 around outside the wing-covers, their tips meeting at the base 

 of the liead. The first and second pairs of legs are folded at 

 right angles to the body, the third pair being oblique to the 

 body. The tips of the first pair of tarsi reach to the base of 

 the second pair of tarsi ; the tips of the second pair of tarsi do 

 not reach to the base of the third pair of tarsi, the third tarsi 

 not reaching to the tip of the abdomen by a distance equal to 

 nearly their length. The prothorax is full and convex, the hinder 



