LÉPIDOPTÉROLOGIE COMPARÉE 3/1 



brown zonaria pupa. The wing cases are clearer and more waxen 

 like than those of hirlaria, but, nevertheless, they are still red 

 brown, a very few approaching the green of sonar la; by being 

 somewhat yellowish. 



The combination of the colouring and pointing causes both 

 zonaria and denhami pupas to be glossier than those of hirtaria. 



The dorsal vessel, which stands out so well in zonaria, but not 

 in hirtaria, is barely visible in denhami. The antennae cases are 

 broad and flattened, the well marked and raised pectinations of 

 hirtaria being absent. The tongue and leg cases follow zonaria; 

 they are smooth and neat, instead of being irregular and striated 

 as in hirtaria. The scars and prominences showing the position 

 of the labrum and mandibles are less conspicuous than in that 

 species. 



The spiracles are nearer the segmentai divisions and are 

 rounder, less, and more markedly depressed than in hirtaria 

 although the scar of the last abdominal spiracle is much less 

 obvions than in zonaria and more resembles hirtaria. The varia- 

 tion in the last respect is very slight. The remains of the two 

 warts on the 8th abdominal segment are generally, but not always, 

 absent. The maie génital organs are well marked, the scar being 

 smooth and neat as in zonaria. 



The side spines on the loth (?) abdominal segment do not 

 follow hirtaria for they are short and obtuse. The base of the 

 anal spine in denhami and hirtaria, is broad, roughened and 

 striated, giving rise to two terminal spines at once without the 

 development of the smooth stem seen in zonaria. This base is 

 distinctly concave in hirtaria and denhami but not in zonaria. 



The shape of the chrysalid is much as in the two species for 

 they differ but little in gênerai outline. 



The above, of course, only includes the maie pupœ; this hybrid 

 never produces a female. As in ail the others, the imago, if it 

 is to come out the year following pupation, develops in the 

 autumn of the year the pupa is formed. Generally, however, a 

 small proportion lie over for two winters. 



