PI-PAH OF SOME MAINK SPECIES OK NOTODOXTOIDEA 41 



culate, especially along the middle line; wings slightly elevated 

 along the dorso-lateral margin ; abdominal spiracles almost cir- 

 cular in outline, usually slightly elevated, the spiracle of the 

 sixth abdominal segment considerably ventrad of the others ; 

 abdominal segments roughened with indeterminate trans- 

 verse impressions and sparsely punctate; cremaster less than 

 1 mm. in length, the two caudal setae of each side curved cepha- 

 lad, the remainder curved caudad. 



Average length 12 mm. ; greatest width 3 mm. 



The larvae of this species were very abundant on sweet 

 fern. They differ from the majority of geometrid larvae in 

 having the lateral margins of most of the abdominal segments 

 produced into triangular projections one on each side of a seg- 

 ment, which makes the lateral margin of the body very strongly 

 toothed. These projections often curve slightly dorsad. The 

 larvae were about an inch long and variously colored. Some 

 were all green, others were tinted with yellowish and reddish 

 colors like autumn leaves, while others were pale yellow tinged 

 with red. The pupae were less variable in color, and no differ- 

 ence could be detected in the adults. The larvae were very diffi- 

 cult to locate as they fed along the edge of the sweet fern leaves, 

 and the notches on their body corresponded in a general way 

 to the notches in the leaves. Many of them were taken by 

 sweeping. The first larvae were collected July 23 and they were 

 abundant till the middle of August. By the third week in Aug- 

 ust practically all had pupated. The larvae spin a few threads 

 of silk between two leaves and the pupa is held in place in 

 the entanglement of the silk by the hooks on the cremaster. 



Genus ANIA Stephens. 



Body widest near the cephalic end; surface roughened 

 with deep indeterminate impressed lines on head, thorax and 

 appendages, densely punctate on the abdomen, never presenting 

 a polished appearance; face-parts elevated, the head with a 

 rounded, transverse ridge just caudad of the proximal ends of 

 the antennae ; a small portion of the labial palpi exposed caudad 

 of the labrum ; maxillae about seven-eighths the length of the 

 wings, the proximo-lateral angles never reaching to the eye- 

 pieces ; prothoracic legs about three-fourths the length of the 

 wings, their femora never exposed ; mesothoracic legs longer than 



