135 



species were most often the centres of large assemblages ef coloured 

 species, which were supposed to form mimetic associations of the 

 Miillerian kind. But they were not invariably the dominant 

 member of the group, and in some cases, as in S. Brazil, M. ethra 

 was rather rare, while the similarly coloured Heliconius narcaxi was 

 common. Similarly M. iiineuinpsis was considerably rarer than 

 H. iiiira. Only one or two species were without their exact 

 counterpart in Heliconius. M. satirisirom Bolivia, and M. cranierihom. 

 British Guiana, were not exactly matched by any species of Heliconius. 

 The rare M. mnasias and its forms was more like the species of 

 Ceratinia, and there was no species of Heliconius in the least bit 

 like it. The following is a list of the species of the two genera 

 exhibited. 



Heliconius nu)nata. 



pardalinus. 



'•adiosus. 



aurora. 



arcuella. 



nu'ssene. 



eupJione. 



lemcns. 



telchinia. 



aristiona. 



nietalelis. 



clara. 



eupJtrasius. 



rohigus. 



silvana. 



mira. 



narccta. 



tiwicus. 



clarescens. 



ismenius. 



Commander R. S. Gwatkin-Williams, R.N., exhibited the follow- 

 ing aberrations of British lepidoptera. 



Epinephele jurtina [janira), series of five females from South and 

 West Ireland, showing tawny banded hindwings. 



At/riades coridon, from Eastbourne, showing type and underside 

 aberration. 



Polijommatiis icarus, from Broadstairs, male and female types, 

 with underside aberration of each. 



Pseudoterpna pruinata, from Clacton, type and reddish variety. 



