108 ENTOMOLOGICAL NEWS. [April, 'o6 



white, anal siphon more or less black, head ferrugineous with 

 sutures ventrally and spots laterally piceous. 



The head is subquadrate, narrower than the prothorax, 

 slightly wider than the abdominal segments, comparatively 

 small in the younger larvae, widest at or just back of the eyes, 

 tempora scarcely at all subangulate, the frontal surface quite 

 evenly and moderately convex. The antennae (Fig. 6) are 

 more or less piceous, usually whitish beneath, slightly more 

 than one-half as long as the head, very feebly arcuate, cylin- 

 drical, slightly and gradually narrowing at apex, and termi- 

 nating in a small colorless, pointed segment ; laterally at mid- 

 dle is a long seta. 



The mandible (Fig. 9) and palpus (Fig. 10) are sufficiently 

 characterized by the figures. The mentum (Figs. 7 and 8) is 

 triangular with the sides slightly arcuate, and finely subden- 

 ticulo-crenulate, the internal surface (Fig. 8) is clothed with 

 very fine hairs or cilia. 



The thorax is transversely oval ; at each side there are four 

 or five well-developed tufts of long setae, of which the dorsal 

 two are only given in the figure. 



The abdominal segments, 3 to 7, are subequal, segments 

 1 and 2 are apparently shorter. 



The pecten of the eighth segment consists of a patch on 

 each side of the segment, of about 15 to 19 chitinous scales, 

 apparently arranged in two transverse rows ; one or two scales 

 may constitute another or third row ; the anterior row has 9 or 

 10 scales, while the posterior some 5 or 6, their line of attach- 

 ment being just caudad to that of the anterior row, and usually 

 alternating with them ; sometimes they are arranged in ante- 

 rior-posterior series, which is never perfect ; each scale is elon- 

 gate, flattened, with the margins fringed with spines (Fig. 4), 

 the scales vary in form as indicated by the figures. 



The anal siphon is about three times as long as wide, ap- 

 parently shorter in the younger larvae. The siphonal pecten 

 consists of a single straight series of 13 scales, situated at 

 basal fifth and reaching the base. Each scale (Fig. 3) is very 

 acute, with one to three smaller spines at proximal side of the 

 base. 



