Cases of Protective Resemblance, Mimicry, etc. 365 



stated yellow and black stripes are the commonest warn- 

 ing colours. I have seen several specimens of S. armata 

 at Chiddingfold hovering over flowers and bushes, rising 

 and falling, when they looked very like Hymenoptera (I 

 have observed the same thing in Pachyta ccrambyciformis). 

 It is very common for Longicornes to mimic Hymenoptera 

 all over the world. 



Grammoptera prteusta, F. 



This insect is a very good mimic of a Telephones (or 

 rather of Bhagonycha, having the apex of the elytra black). 

 It is found on the flowers of hawthorn, and in this country 

 is practically confined to the New Forest. 



Acanthocinus ivdilis, L. 



Mr. Holland says this beetle is " very like a flake of 

 pine bark." I proved this to be the case last year at 

 Rannoch. Having found a mutilated specimen on the top 

 of a fir post, I remarked to my friend Professor Beare, that 

 it had been fighting. Examining the post more closely I 

 saw what appeared to be the remains of a pair of antennae 

 and said, " Here are the antennas of another." They turned 

 out to belong to a perfect specimen. I was looking straight 

 at it, but being in a slight depression of the weather-beaten 

 post, it looked just like a piece of bark. 



Leiopus nefodosus, L., and Mesosa nubila, 01. 



These species are mottled and coloured somewhat 

 like lichens. They occur on fallen boughs, faggots, etc., 

 and exhibit a very perfect colour-harmony with their 

 surroundings. 



Pogonochzerus. 



The colours of our three species of this genus with their 

 white patches and uneven elytra undoubtedly resemble 

 lichens on boughs. Professor Beare and I were both 

 taken in by P. bidentatus in the New Forest. We were 

 examining a heap of lichen-covered logs, on the underside 

 of one of which were two specimens of this species. We 

 held the log up, with the underside turned upwards, so 

 that we were looking straight at the beetles and yet failed 

 to see them until they ran and fell to the ground, one 

 specimen being lost. 



