109 



Calliviorpha guaibipitnctaria [hero), normally red, often has j-ellow 

 and intermediate forms, Arctia caia, normally red in ground colour 

 of hindwing is not rarely yellow, and yellow hindwings in Calli- 

 mnrpha duminula, though rare in nature, have come to be exceed- 

 ingly abundant by means of artificial breeding. The same remark 

 would appear to apply to the Anthrocerides {Zjj(/acna). 



" No doubt there are reasons for these changes in ground colour. 

 I have not attempted to research, but I feel sure, if a full knowledge 

 of it is not already available, that it would be an interesting field 

 for study," 



Mr. Newman stated that he had found it almost impossible to 

 hybernate the larvae of C. potatoria, and hence one was not able to 

 ascertain whether any Mendelian characteristics are shown in the 

 striking variation. 



Mr. B. S. Williams exhibited a bred series of Bupalits piniaria 

 from Leith Hill, including a male of a very pronounced yellow 

 colour, and a female, which had its colour areas as in the male, but 

 of two shades of putty colour. 



Mr. W. West (Ashtead) exhibited specimens of TriiBna psi and T. 

 tridens, and asked what were the definite distinction in markings 

 between the two species. The general opinion was that although 

 two series side by side were sufficiently different it was practically 

 impossible to express that difi'erence in words which would suffice in 

 all cases. Of course the larvae of the species were diflerent in colour 

 and form. 



JULY 22iid, 1915. 

 Mr. a. E. Gibbs, F.L.S., F.E.S., Vice-president, in the chair. 



Dr. Chapman exhibited the first specimen of Latiorijia pyrenaica 

 that has been bred, the early stages having up to the present been 

 unknown ; also several captured specimens, to give members 

 unacquainted with it some idea of the species. Also specimens of 

 Latiurina orbitidus var. oberthuri, a form found also in Switzerland, 

 but more characteristic of the Pyrenees, L. orbitulus and L. 

 pyrenaica are very closely allied but distinct. 



Also specimens of A(piade-'< escheri var. rondoid, bred from eggs 

 obtained at Gavarnie, though these are var. rondoui, i.e., the 

 Pyrenean form, they are not ab. rondoui, the form to which that 

 name was first applied. These have smaller and less bold spots 

 than the Alpine form, finest perhaps in the Tarentaise, but less so 



