200 THE ORCHID REVIEW. 
INSECTS INJURING DENDROBIUM PHALANOPSIS. 
WE have received from Dr. F. Pritchard Davies, of Maidstone, several 
small hemipterous insects which have been found on recently-imported 
Dendrobium Phalznopsis, and are said to certainly do much injury. It is 
difficult to destroy them simply by hand, and fumigation would seem to be 
of little avail, as they get down into the compost. The insects have not yet 
been identified, but it seems desirable to call attention to the matter at 
once, as others may have the same pest in their collections. We also take 
this opportunity of recurring to the bad irruption of Cattleya fly last year 
(see pp. 147-148 of our last volume), and of asking our correspondents 
whether the steps taken to check future outbreaks were effectual. No com- 
plaints having come to hand this year, we presume this to have been the 
case, but it would be interesting to have particulars, and especially whether 
it has succeeded in establishing itself in any collection. 
ARE VARIETIES CONSTANT. 
Mr. Crawsuay begins by saying, “ Yes, excepting O. Pescatorei,”” but then 
80es on to negative his assertion by mentioning the fact that he has an 
O. crispum that was absolutely spotless with the exception of the lip in . 
1896, but that in ’97 it proved a finely spotted form in all the six blooms it 
had. Personally, I am inclined to think that strength of bulb has a great 
deal to do with the value of the spots. I am sending you a single bloom 
from a spike of twelve flowers, all being similar, and a spike from the same 
plant, but from a weak bulb. You will observe that there are very few spots 
on any of the flowers, some being quite free from them. I have frequently 
remarked this to be the case. 
R. BRooOMAN WHITE. 
Arddarroch, 
Garelochead, 
Dumbartonshire. 
‘The large flower has four or five somewhat confluent spots on the 
centre of each sepal, and rather more numerous smaller ones ‘on the lip, - 
while one of the petals bears a single spot. The spike sent has eight 
flowers of about half the size, and out of the aggregate of twenty-four 
sepals ten are unspotted, eleven bear a single spot, two have two spots, and 
one has three; of the sixteen petals one only bears a single small spot, but 
in the lips the spots are as numerous as in the large flower, though rather 
smaller. The difference is striking, both in size and in the different aspect 
of the sepals, and the cause is evidently lack of nutrition on the weak bulb, 
Opp et one ee tea Bagh : ee 
SENET Ags See ag See je fee sree See alg areas ss 
SETAE RANG Se Poe vs SN ee Pa Oe Be eR ea 
