( xxvi ) 



the trunk of a tree on which it does not feed is a further 

 and very interesting proof to the many ah^eady svipplied that 

 this colour-relation is in no way associated with food. 



A careful drawing of the larva of Matarbela sp. and an 

 investigation of the structure of its dorsal appendage would 

 be valuable. 



When Mr. Leigh considers that the conspicuously-coloured 

 Heterocerous larvae are the most abundant in Natal, is it 

 not likely that sufficient allowance is not made for the far 

 greater difficulty in finding the others and for the immense 

 number of cryptic species of which the larvte are as yet 

 undiscovered ? 



It is probable that the spines of the larva of Lophostethus 

 flumolinii are not mimetic of Saturniidae, but an indication 

 of real affinity. All Hmerinthine larvse and many other 

 Sphingidaj may be seen by the lens to be covered with spines 

 during the first stage, and these sjiines are often forked. A 

 drawing of the young larva of Macroglossa fuciforvvis, 

 magnified a few diameters, would show a most astonishing 

 form apparently very different from anything that we are 

 accustomed to regard as a Sphinx. (See Trans. Eat. Soc. 

 1887, pp. 568-74, together with the references cited.) 



Professor Poultun then exhibited the cocoons of Euhlemviistis 

 cldorozonea sent by Mr. G. F. Leigh in illustration of his paper. 

 He also showed a specimen of Pohjyonia (Grapta) C-album 

 in the attitvide of prolonged repose, together with specimens 

 of Aiuea moeris set in different ways to illustrate its probable 

 resting position, and upon these specimens he read the 

 following notes : — 



" Many years ago I came to a conclusion as to the 

 probable meaning of the ' C or ' comma ' on the under 

 surface of the hind-wings in buttei'flies belonging to the genus 

 Polygonia (Orapta). I believe that it represents, in bright, 

 sti-ongly-reflecting ' body-colour,' the light shining through 

 a semi-circular rent in a fragment of dead leaf, — the rent pro- 

 duced when a little segment of leaf has broken away along 

 a curved line, but still remains connected with the rest 

 across the chord of the arc. Unless such a segment remains 

 precisely in the plane of the leaf, light may pass through 



