OcTOBER, 1910.] THE _ORCHID. REVIEW. 317 
On reaching the other houses mentioned we found batches of well-. 
known plants in thriving condition, the first two containing various 
Cattleyas, Cypripediums, &c., the majority not in bloom, though we noted 
a few Cypripediums and Cymbidium lancifolium with two spikes. 
An Odontoglossum house contained many interesting things, including 
the striking Dendrobium Victoria-Regina in bloom, two plants of Odontioda 
Thwaitesii, some Oncidium incurvum album showing for flower, a nice 
batch of Odontoglossum X Rolfeze, several of which were in bloom, two 
O. Uroskinneri. album in flower, and O. crispum Lady Jane in spike. A 
few plants of O. c. Pittianum and O. c. Lindeni were pointed out, and we. 
noted a few good plants. of Nanodes Meduse, Cybidium x Holfordianum 
and x Wiganianum, with batches of Cymbidium insigne and C. Lowianum 
concolor. A number of seed pods told of hybridising operations in 
progress. 
In a Dendrobium house we saw D. mutabile, together with some good D. 
superbiens and D. Phalznopsis in bloom, and it is hoped that two capsules. 
of D. P. album self-fertilised may yield a batch of albinos. Plants of D.. 
nobile virginale and other good things were pointed out. 
Lastly we may mention a Cypripedium house, containing a very fine lot 
of healthy plants of choice varieties. A good many interesting things 
were in bloom, among which we noted C. x Olivia with three fine flowers, 
C. x Mary Beatrice, very richly coloured, C. x Watsonianum with four 
flowers, C. x I’Ansoni, with a three-flowered spike, and a very strong 
plant of C. x James H. Veitch with numerous flowers. There were also 
several fine plants of Bulbophyllum virescens. The collection is in 
excellent condition generally, and our rather hasty notes give a very 
imperfect idea of the many choice things it contains. 
FLY WHICH ATTACKS ORCHID SEEDLINGS. 
I ENCLOSE, in a glass tube, a few small white maggots, with black heads 
which destroy Orchid seedlings. I raise a few seedlings, and usually sow 
on a ball of sphagnum moss, which is enclosed in calico and pushed into a 
small pot. On this I sow the seed, but this maggot plays havoc with the 
seed bed, and eats the developing seedlings after they germinate, and before 
they form leaf or root, by the hundred. This happens a few weeks only 
after sowing, and the maggots set to work almost as soon as the calico rots, 
and both calico, moss, and developing seed becomes a complete upheaval 
with the maggots. With a lens I have watched them churning the little 
green developing seeds up in a heart-rending manner. How long it remains 
a maggot I do not know, but I have seen many of them in the pupa or 
chrysalis stage in the moss, and these develop into the perfect fly. I enclose 
a leaf of Pinguicula caudata on which many of these flies have been caught. 
