XX 
PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 
grubs received from Mr. White, Wateringbury, Kent, but the 
species was not readily determinable without being bred to the 
imago stage. It was suggested that gas-lime should be used, as 
for wire-worm, to destroy them. 
Pines, Diseased. —Specimens of Scotch Fir and of Abies 
Nordmanniana were received from Mrs. Marshall, Skelwith 
Fold, Ambleside, the former attacked by the Pine-beetle, the 
latter by Chermes abietis. This insect has always proved to be 
very fatal to this species of Abies, and the only suggestion that 
could be made was to cut down the tree and burn all parts 
attacked. With regard to the Pine-beetle, to encourage the 
multiplication of insectivorous birds as far as possible might be 
advantageous. 
Cypripediums with Fungus. —Mr. Douglas exhibited speci¬ 
mens with the roots badly infested by a Mycelium. Mr. Yeitch 
at once recognised it as the result of a too damp atmosphere, 
recording the fact that having on one occasion to make a 
double roof, it caused so much damp that he lost many 
Orchids from the same cause, but on improving the atmosphere 
this completely prevented any recurrence of the fungus. 
Primula obconica $ x sinensis. —Mr. Shea showed a hybrid 
raised between these species. The flowers were pink, showing 
the extension of yellow from the throat, with curled petals, and 
bearing a decided scent of sinensis. The calyx, however, was 
entirely that of obconica. The general appearance was nearer 
that of the female parent. Mr. Shea proposes to re-cross with 
sinensis, and so intensify the features of the male parent. 
Two-spathed Arum. —A fine example of this very common 
condition was received from Mr. Thomas Bennett, The Gardens, 
Shavington Hall, Market Drayton. 
San Jose Scale. —The Rev. W. Wilks said that the Council 
had sent a memorial upon the subject of this pest, Aspidiotus 
perniciosus, to the Department of Agriculture. Mr. McLachlan 
remarked that a discussion upon the subject, and its reported intro¬ 
duction into Great Britain, took place at a recent meeting of the 
Entomological Society. Mr. R. Newstead, who has devoted 
special attention to the Coccidse, stated that not even an expert 
could with certainty identify this scale, or distinguish it from 
amongst the upwards of thirty described species of Aspidiotus, 
without the most careful microscopical examination. Any 
