311 



THE ENTOMOLOGIST S RECORD. 



L. MEEiDioNALis X viBURNi ( = 2x3). — This cross produced 6 

 and 7. In September, 1896, I paired three or four ^s of L. 

 meridionalis (Batch C) with three dark brown ? s of L. viburni 

 (Batch B). I have no record of the contrary pairing and there- 

 fore take it for granted that it did not take place, and that 

 the young larvas of all three batches were meridionalis S' xvibund^. 

 These larvae, which I leave to Mr. Bacot to describe in detail, were 

 divided into two lots, no. 6 were the white-haired ones resembling L. 

 meridionalis, no. 7 the brown-haired ones resembling L. viburni. It is 

 particularly noticeable that though their coloration varied slightly 

 there were no true intermediate forms between the two types. The 

 white-haired (no. 6) had the silky white hairs of L. meridionalis, often 

 just sufficiently tinged with brown to make it possible to distinguish 

 them from pure L. meridionalis. The brown-haired (no. 7) were 

 perhaps a little more distinct from L. viburni than was the case in the 

 other batch, that is to say, the influence of the L. meridionalis father 

 was slightly more marked than that of the L. viburni mother, the red- 

 brown fur being somewhat more greyish than in pure L. viburni. 

 Whether these two types were present in all three families, or whether 

 the one belonged to one batch, and the other to the other two, I cannot 

 say. It would have been more satisfactory to have kept the three lots 

 of larvfe separate, but, to minimise the trouble of keeping so many 

 young families of larvae, I reared them all together, a course which I 

 now regret having followed. The imagines from both 6 and 7 were 

 fairly constant in marking. The males had the white dot of a medium 

 size, and the bands were continuous on fore- andhindwings (both L. meri- 

 dionalis attributes); the specimens in my possession (I have not examined 

 this feature in Mr. Bacot's) have hght fringes to the hindwings in the case 

 of no. 6 in 11 (3" s and brown in 2, in the case of no. 7 something under 

 half have the fringes more or less tinged with brown. In both, there 

 is a tendency in nearly all to have the nervures outside the band on 

 the hindwings slightly dusted with the ground colour. There is, as far 

 as I can see, no diflerence between 6 and 7 except that the band of 6 is 

 slightly whiter (less reddish) than in 7, a difference to some extent 

 noticeable in L. meridionalis as compared with L. viburni. To sum up 

 then, the larvfe follow one or other parent more or less exactly, the 

 male parent (L. meridionalis) having, however, a slight predominance. 

 This predominance is more marked in the imagines. I have left out 

 of consideration the ? s of which, it should be noticed, there were very 

 few, the total numbers being : 



No G. 14 c? s, 5 ? s.— Warburg. No 7. 31 <? s, 2 ? s. — Warburg. 



3 c? s, 1 ? . — Bacot. 5 J s . — Bacot. 



17 <? s, 6 ? s.— Total. 86 <f s, 2 ? s.— Total. 



L. (meridionalis X viburni) X L. MERIDIONALIS AND L. (mERIDIONALIS 



X viburni) xL. VIBURNI, &c. — I will DOW briefly consider the crossings 

 of /v. meridionalis x viburni with itself or either parent. 



(1) L. {meridionalis xriburni) ^ x L. meridionalis $( = Gc? x2?). 

 —This pairing obtained by Mr. Bacot (July 19th, 1897, labelled D) 

 produced very white larvae. 



(2) L. {meridionalis X viburni) <? x L. viburni 2 { = Q 3' x3$). — Ova 

 obtained by Mr. Bacot (July 19fch, 1897, labelled C). The only 

 note I have of the larvfe is that two of them were brown with the 

 long hairs white, Mr. Bacot reared three ? s. 



