LÉPIDOPTÉROLOGIE COMPAREE 449 



Body. There is no development of the longitudinal stripes 

 in this instar except in an extremely faint way toward the end, 

 so that, except for the usual spots, the body is wholly black. The 

 transverse white bars stand out very clearly and of course, are not 

 connected in the medio-dorsal area. Just below each, on the 

 position of the future supraspiracular line, a faint white spot is 

 visible and beneath this, but a little in front, we hâve the large 

 white spot of the spiracular line, which may be tinged with 

 yellow in some spécimens. Proceeding from this spot in front 

 is a faint white dash, representing the spiracular stripe. Behind 

 the spot and just below it, there is another white spot. Thèse larger 

 spots are quite well developed on the thoracic segments, but they 

 are very indistinct on the last abdominal segments. The collar 

 is white and very distinct and consists of a séries of white spots. 

 Just before the anal plate are two white dashes. Beneath, the legs, 

 prolegs and body are black in colour, only slightly interrupted 

 by the few whitish freckles, indicating the medioventral stripe. 

 The base of the legs bears the usual white dash. It will thus be 

 seen that the larva is extremely close to that of Jiirtaria. 



2nd INSTAR. 



Length at end : 8,i mm. 

 (It is well to point out hère that the hirtaria which were used 

 to produce this hybrid, were English, but the larvae, with which 

 the comparisons were made, were German and were reared from 

 var. Jianoviensis). 



Head. The head and mouth parts were much the same as 

 before. 



Body. The ground colour is a deep black but already the 

 longitudinal stripes are becoming clear. In hirtaria, the medio- 

 dorsal and subdorsal stripes are but faintly discernible after the 

 yellow bars ; in biiloveci, they stand out clear and white on each 

 side of thèse bars, thus causing that larva to hâve a doubled séries 

 of white " H " s down the back of the first abdominal segments. 



29 



