120 
chiefly in the pupal stage in greater or lesser numbers at 
irregular intervals since. But even during periods over which 
the species may be said to be fairly plentiful it is only in 
every other year that any numbers are found, exceedingly 
few arriving at maturity in the intervening years. 
Mr. Barrett remarked that he understood that the larval 
stage lasted more than one year, and Mr. McArthur had 
confirmed this from his observations. Mr. Tutt spoke of 
the unusual occurrence of this intermittent habit of appear- 
ance, and could not explain why there had been no retarda- 
tion or acceleration of development, so that the species 
might be obtainable every year. No doubt the species was 
one which had spread from the north, and had retained 
its boreal habit of a two years’ larval existence. Perhaps 
it had not been sufficiently long in its present southerly 
habitat in these islands to have responded to its environ- 
ment. Mr. Adkin referred to the similar intermittent 
habit of Retinia resinella, which he said was absolute, not a 
single specimen being obtainable every other year. 
Mr. Mansbridge exhibited a smoky variety of Sfzlosoma 
lubricipeda from York, obtained before the advent of the 
present race of var. radiata. 
Mr. Tunaley exhibited a large number of species of Lepi- 
doptera to illustrate his paper, which was entitled “ Notes 
and Observations during my Holidays in Scotland” (ante, 
aula) 
3 In proposing a vote of thanks to Mr. Tunaley, Mr. Tutt 
remarked that the observations in his paper were extremely 
interesting. He was particularly interested in the observed 
habits of Evebia e@thiops, and stated that in the Tyrolean 
Alps near Cortina, where the species abounded on grassy 
sloping inlets into the pine-woods, he had noticed the sudden 
appearance and disappearance of this species from and into 
the grass, with the advent or disappearance of a gleam of 
sunlight. He remarked that in the same locality Evrebia 
ligea was common, and disappeared in the same sudden 
manner, but this latter species went up into the trees, and 
on the appearance of the sunshine the specimens came 
fluttering down from the trees to mother earth like great 
soot flakes. He also observed that Epinephele ianira had a 
similar habit in Britain. Hzpparchta semele, on the contrary, 
had a habit not unlike that of E. @thiops. 
As to the ocellation of E. aethiops, Mr. Tutt explained that 
he had entered fully into the mode of its arrangement in a 
paper printed by the Society (Proceedings, 1895, p. 77). 
