THE ORCHID REVIEW. 87 
THE CATTLEYA FLY. 
Ix 1890 I got the above fly with some imported Lelia purpurata, and 
can feel for anyone who has the pest. _I tried fumigating, lighted candles 
at night, cutting off infected pseudobulbs and piercing with a needle where 
I saw the young growths had got the grub at work, but found these methods 
were of no use whatever. I then let the new pseudobulbs get full grown, 
and by drawing a soft hand up and down them could detect where the grub 
was located, by feeling a slight and often a decided protuberance on the 
pseudobulb. This we cut open with the smallest knife we had, and got out 
from one to five grubs, some of which were straw colour and others dark 
brown. It is quite easy to find the grubs by this method, without even 
looking at the bulbs. | By observation we got to know when to expect the 
flies to come out and caught about twenty, and very beautiful they are 
when newly out of the bulb; it is long, with a blue body and yellow mark- 
ings. If I should get the fly again, I should not wait for its coming out, 
but pierce the protuberances with a very fine carpenter's bit, as a knife 
makes a rather clumsy looking hole. The time when I got the flies out of 
the Lelia purpurata was just after this period, and they come out between 
10 and 11 a.m., when the sun is bright and warm. 
ByRKLEY GARDENS. James HAMILTON. 
DENDROBIUM RUCKERI. 
Tuis rare but pretty little Dendrobium is now flowering freely at Kew 
from plants recently sent from India, and it is now evident that the locality 
originally published is erroneous. _ It originally flowered in the collection of 
S. Rucker, Esq., of Wandsworth, in 1843, and was described by Dr. 
Lindley (Bot. Reg., XXV., Misc., p- 25); who remarked ‘A Manilla (?) plant 
which has lately flowered with Mr. Rucker. It is sweet-scented, handsome, 
and distinguished by its clear ankin-coloured flowers, the lip of which is 
a little stained with rose-colour.” I diately afterwards it was figured 
(Lc. t. 60), when the author added—* We presume it to be one of Mr. 
Cumming’s discoveries in the Philippines, although no trace of it is to be 
found among his dried specimens.” A drawing from Calcutta, however, 
shows it to be a native of the Khasia hills, besides which it has been met 
with at Nimbong, in Bhotan, at 4000 feet elevation, by Mr. Lister, which 
effectually disposes of Lindley’s doubtful locality. 1 
t has the general habit 
of D. luteolum, to which it is most allied, but has smaller flowers, with 
narrower segments, and the side lobes 
of the lip regularly striped with light 
reddish brown. The central line of the lip is strongly villose. 
It is in- 
teresting to be able to clear up its history. 
R. A. R 
