109] LEPIDOPTEROUS LARVAE — FR ACKER 109 



verse stripes on dorsal half and longitudinal stripes 

 on ventral half of body. Didugua 



bb. Segment 8 not bearing a distinct dorsal hump, horn, or gibbosity. 

 c. Prothorax bearing a pair of dorsal eornicula. 



d. Anal prolegs stemapodiform, about as long as body is wide^ 

 longer in early stages. Fentonia 



dd. Anal prolegs shorter than body is wide. 



e. Head divided by a pair of subvertical lines into three areas, 

 the lateral minutely rugose, the mesal hard and shining. 



(In part) Heterocampa 

 ee. Head not divided into three areas. Litodonta 



CO. Prothorax not bearing a pair of dorsal eornicula. 



d. Body bearing a distinct lateral line through spiracles or a 

 conspicuous mediodorsal line or both; supraspiraeular lines 

 never present, 

 e. Prothoracic spiracle conspicuous, about twice the height of 

 the abdominal spiracles; second ocellus closer to first than 

 to third, 

 f. Kappa on segments 5, 6, and 8 separated from the spira- 

 cle by a distance equal to about one-half the width of 

 the spiracle. (In part) Hyperaeschra 



ff. Kappa on segments 5, 6, and 8 separated from the spira- 

 cle at least as far as the spiracle is wide. Lophodonta 

 ee. Prothoracic spiracles about the same size as abdominal 

 spiracles or not more than one and a half times as high, 

 f . Lateral lines present ; second ocellus closer to first than to 

 third; dorsal line double. Gluphisia 



ff. Lateral lines not present; second ocellus closer to third 

 than to first; dorsal line single. Misogada 



dd. Body not bearing lateral lines through spiracles; mediodor- 

 sal line when present paralleled by a pair of supraspiraeular 

 lines on at least a part of the abdomen, 

 e. Second and third ocelli closer together than first and second ; 

 anal plate usually inconspicuous, all spiracles subequal in 

 size. (In part) Heterocampa 



ee. Second and third ocelli as far apart as first and second; 

 anal plate large, semicircular, nearly as wide as segment 

 9 ; spiracles of prothorax much larger than those of abdo- 

 men. Nadata 



A discussion of the genera of this, the largest subfamily, would be 

 out of place in a paper of this kind in view of the excellent Monograph 

 by Packard, but as several species have been described since the publi- 

 cation of that work, the following notes are offered: 



