452 LÉPIDOPTÉROLOGIE COMPARÉE 



last subsegments. The subspiracular stripe is quite distinct and 

 yellow near the prolegs in hirtaria, but not in buloveci, in which 

 the filling m of ail the stripes is grey. The prolegs in both are 

 blackish, paler mixcd, but the pale edging of the plates on the 

 legs, is much plainer in buloveci. 



The legs are black in both, the pale mark on the base being 

 rather indistinct in the hybrid. The space between the legs is pale. 



4th INSTAR. 



Length at end 2,9 cm. 



Head 2 mm. 



Greatest breadth 3 mm. 



Head. The colour of the head is white, more or less blotched 

 with black. The epicrania are fuller and rounder than in hirtaria, 

 and the spotting thereon more linear. The mouth parts are dark, 

 but paler edged. 



Body. The ground colour now, is a peculiar yellowish grey- 

 almost a stone colour. In some individuals, it is distmctly yellow 

 and in others, a grey tending to purple. The longitudinal stripes 

 are ail présent, but the black edging is very much broken. The 

 mediodorsal stripes are much broader and yellower just before 

 the yellow transverse bars; they seem, to the unaided eye, to be 

 merely a yellowish extension from them, in shape somewhat like 

 a wedge. The subdcrsal stripes are much more conspicuous. They 

 seem to undulate, reaching their highest points just after the bars, 

 and midway between them ; they are broader and brighter in 

 colour just after the former position. The supraspiracular stripe 

 is very irregular, and a branch leaves it just about the middle of 

 a segment and connects it with the spiracular Ime. Just after a 

 yellow bar and at the end of the hrst subsegment, where there 

 is présent a thin transverse black line the stripes tend to be con- 

 nected by irregular detached portions of the black edging. On 

 the thoracic and last abdominal segments, the stripes are much 

 confused, although the space between the two médian stripes is 



