408 LÉPIDOPTÉROLOGIE COMPARÉE 



more like hirtaria. The stripes on the ventral area are like those 

 of hirtaria in build, but are filled in as in poinonaria. 



On the whole, hitnii confirms in this instar the mipression that it 

 is nearer hirtaria. 



4th INSTAR. 



Length as in pilzii. 

 There is now a slight différence in buiid in the two hybrids, 

 for pilzii, follovvmg pomonaria, is distinctly stouter and therefore 

 seems shorter. 



There is but little différence in the heads of the two. In the 

 body the ground colour of hnnii is much more usually purplish; 

 in many instances, influenced by the melanism so powerful in 

 hirtaria, the larvae become completely clouded with black. 



In hirtaria, the fiUmg in of the longitudinal stripes is well 

 marked and so is the edging; hunii follows hirtaria very closely. 

 The space between the two dorsal stripes, which is so often grey 

 in hirtaria, is very often the same in hnnii, — a character which 

 pilzii vary rarely displays. The yellow bars are bright yellow in 

 hnnii and not pale as in pilzii. 



The collar is more hirtaria like than that of pilzii and so are 

 the two prominent warts on the eightli abdominal segment. 



Both hâve a black edged spiracular stripe interrupted by the 

 original yellow spots which are rounder in hnnii. The filling in 

 of this stripe, just before the large yellow spot, is yellow and 

 spotlike in hirtaria and hunii but not in the others. 



Otherwise the two are nearly alike. 



5th INSTAR. 



Length 43 mm. 



Breadth of head 3,45 mm. 



Breadth of 5th abdominal segment 4,8 mm. 



The shape of the larva, though near to that of pomonaria, is 

 slightly more elongated than in pilzii and the thorax is somewhat 

 less llattened. 



