454 LÉPIDOPTÉROLOGIE COMPARÉE 



yellowish in colour, variegated with black, which is more conspi- 

 cuous on the posterior plates. 



The primary tubercles are more easily seen by the naked eye 

 and are therefore coarser than in the other hybrid larvas. 



5th INSTAR. 



Length at the end 4,8 cm. 



Breadth of head 3,8 mm. 



Greatest breadth 4,9 mm. 



The larva, in shape, is moderately long but is much stouter than 

 in hïrtaria; in spite of the greater size of that species, the head 

 of the hybrid is much larger; both the cheeks and epicranial 

 lobes are rounder and fuller. The tendency to notching is very 

 small. In colour, the head is yellowish grey, which becomes 

 slightly pinkish in the cheeks. The whole is mottled with black 

 spots, which are much larger than in hirtaria. The antennae are 

 very pale toward the base, but near the tip, they are blackish. 

 As usual, they bear beneath a long sensory hair. The mouth 

 parts (maxillae, etc.) are yellowish brown and are pale edged. 



Body. The ground colour is gênerai ly a pure grey, tending, 

 in some, to pass through stone colour to yellow. Ail of the longi- 

 tudinal stripes are présent, although the two mediodorsal ones 

 are best indicated. Between the stripes, the ground is more or 

 less black dotted, except in the yellowish examples. Thèse 

 stripes in hirtaria, are clearly outlined; in buloveci, the edging 

 is very fragmentary. The filling in of the stripes is yellowish 

 in the yellow spécimens, but is somewhat inclined to orange in 

 the others. On the thoracic and early abdominal segments, the 

 médian stripes are very well marked; posteriorly they become 

 slightly confused. Throughout its length, but more especially 

 so on the first and last segments, the subdorsal stripe is very 

 feeble. So too, is the supraspiracular, although in dark spécimens, 

 it is a little stronger than in corresponding individuals of hirtaria. 



The transverse yellow bars, although they may be absent, are 



