( xxxix ) 
blue- black, as the embryo matured within — I was perfectly 
unable to get what is generally considered their food-plant, 
viz., ling, but I remembered that " ling " did not occur where 
they were found — rough grassy spots — and accordingly I tried 
them with the ordinary grass growing in my garden, and 
gave them, in addition, that excellent all-round food for 
lepidopterous larvae — knot-grass (Polygonum aviculare). They 
took to both, and by July had moulted twice, and were 
evidently still feeding on, so I sent them on to Dr. Buckell 
to deal with whilst I was away on the Continent. On my 
return, Dr. Buckell informed me that they had gone ahead, 
and in early September he gave me a number of the earliest- 
formed pupas, which emerged in about three weeks. The 
later larvae pupated during the next fortnight or three weeks, 
and the imagines have since emerged, the last on Oct. 16th. 
A part of the brood I am exhibiting to-night. It occurs to 
me to draw attention to the following points : — (1) That 
breeding them in England (even indoors) has resulted in pro- 
ducing the brood at least six weeks later than the correspond- 
ing one on the Continent. It will be remembered that our E, 
cribrum is single- brooded, it being only on rare occasions that 
an odd specimen of the second brood is obtained. (2) That this 
delay in feeding up has not been accompanied by any change 
whatever in the general appearance of the insects. They 
have bred true to type, and are of the same type exactly as 
the $ parent. (3) That of the first 21 specimens bred only 
two females occurred ; that of the last 23, only five were males. 
(4) That there should now be no difficulty in breeding our 
British form on two such excellent substitute (natural ?) foods 
as ordinary grass (Poa annua) and knot-grass." 
The Eev. Canon Fowler exhibited, on behalf of Professor 
Poulton, living specimens of Diapheromera femorata bred from 
eggs received from Professor E. B. Titchener, of Cornell 
University, New York. He stated that the young larvae had 
emerged from the eggs in July and August last and fed on 
lime. Several pairs had arrived at maturity, and were feed- 
ing in cases in the Oxford Museum. 
The Eev. J. H. Hocking exhibited a specimen of Xylina 
zinckenii {lambda) ^ taken by him at sugar on the trunk of an 
