8 THE ORCHID REVIEW. 
of the Stud Book in a difficulty, unless he is prepared to ignore the priority 
question, and I fancy that there are some analogous cases already on record 
if I had time to look them up. 
I have recently received several letters and memoranda on this nomen- 
clature question, and have also seen some remarks in print, on which I 
may have to make a few comments, but not on the present occasion. There 
seems to be a growing concensus of opinion that some of the confusion 
which we all deplore might be avoided if only some concerted measures were — — 
taken to prevent it. Here is an opportunity for some practicable 
suggestions. 
ARGUS. 
THE CATTLEYA FLY. 
I HAVE to-day had a new experience of the Cattleya fly. I enclose some 
of this year’s bulbs of C. labiata. You will notice the hole made by the 
escaped fly is half-way up the bulb. Hitherto I have never found the fly 
grub anywhere but at the base of the bulb. One of the enclosed bulbs I 
have left unopened, but the chances are that the fly is out. In the small 
bulb you will find some small flies just ready to come out. This plague 
seems to have been introduced with a batch of imported labiata. Iam 
going to fumigate extensively twice a week for some weeks, and that should 
prevent any spread of the pest. 
J. Wicson POTTER. 
[The examples sent seem to suggest that if the young pseudobulbs have 
made some progress, and assumed their characteristic shape, before the eggs 
of the fly are laid, the larva may develop without showing much evidence 
of their presence, until they reach maturity and bite a hole by which to es- 
cape. This is what has happened in the present case, for there are several © 
holes by which the flies have escaped, and we fear they will be heard of 
again lateron. A section of the bulb shows that part of the tissue has been 
eaten, and the remainder is discoloured and unhealthy. If the shoots are 
very young when the eggs are laid, their growth is arrested, which circum- 
stance may lead to the detection of the enemy before the fly is mature. The 
smal! growth sent contains two or three active, living flies, just on the point 
of escaping, and ready to lay more eggs and continue the mischief. They 
are exactly identical with the one figured at page 241 of our last volume 
from a photograph sent by Dr. Hoisholt. We fear that new importations 
of Cattleya labiata must be regarded with suspicion, as the pest is frequently 
introduced with them. We hope that this experience will put others on 
their guard, and we advise constant watchfulness,—Ep.] 
a Ss ba Pema RS lial ee noel ee ie renee. / seo er Nenee 
