144 LEPIDOPTERA. 



the peculiar pertinacity with w^iich (as Mr. Doubleday 

 assures me) ivy {Hedera helix) is chosen by B. 'perfumaria, 

 while B. rhomb oularia refuses to eat it, and inevitably dies 

 if not supplied with other pabulum, undoubtedly indicates a 

 singularity of constitution, which has had very much to do 

 with the admission of this insect to the list above named : I 

 am informed that B, 'perfuwaria will eat privet ; and tliat 

 country rhomhoidaria larvae feeding on privet are large and 

 dark, like those of B. perfumaria. 



ACIDALIA MANCUNIATA, mihi. 



Respecting this little wave, its position, as has been 

 already stated (Ent. Mo. Mag. vol. ii. p. 130), is interme- 

 diate between A. suhsei^tceata and A.straminatay though it 

 IS more closely allied to the former than to the latter. 



It is an easy job to see that A. mancuniata is a different 

 insect from siibsericeata, but it is excessively difficult to 

 describe wherein the distinctions lie ; the characters, espe- 

 cially of subsericeata, being so very inconstant. 



The general form of the insect, particularly the propor- 

 tionate shortness of all the wings and the rounded hind 

 wings— rounded as in A. strmninata — are perhaps the most 

 persistent, and give to this Acidalia its peculiar yaczes. 



It is with great satisfaction that, through the kindness 

 of my obliging friend Mr. Buckler, I am enabled to pub- 

 lish his excellent description of the larva, which must afford 

 a more conclusive proof of the distinctness of this species 

 from subsericeata than could otherwise have been arrived 

 at, and in so doing have availed myself of the Rev. H. 

 Harpur-Crewe's description of the larva of A. subsericeata, 

 and have, for the sake of comparison, placed them side by 

 side as opposite : — 



