THE ORCHID REVIEW. 339" 
synonym of C. guttata, without further remark (Bot. Reg., xxx., sub. t. 5). 
In 1892 it re-appeared among the Brazilian importations of Messrs. F. 
Sander & Co., flowering in July of that year, when it was again described 
by Dr. Kranzlin under the name of Cattleya Batalini, Sander & Krianzl. 
(Gard. Chron., 1892, ii., p. 332.) Another plant appeared in the collection 
of M. A. Van Imschoot, of Mont-St.-Amand, Gand. It is very closely 
allied to C. guttata, Lindl., but has even smaller flowers, with proportionately 
broader petals, which only measure 1} inches long, while the front lobe 
of the lip is rather more narrowly stalked. The sepals and petals are 
yellowish-rose or purplish, and quite without spots, and the lip has the side 
lobes whitish and the front lobe purple. It has been compared with C. 
Schilleriana, C. Aclandiz, and C. bicolor, but is very different from the two 
latter in the ample side lobes, and from the former in the flat petals, the 
stalked front lobe of the lip, and the far smaller size. In fact, it is the 
smallest flowered species in the group. Its precise habitat has not been 
recorded, and it would be interesting to know more about this curious little 
plant. 
INSECT PESTS. 
I have been greatly troubled by insects eating germinating Orchid seeds, 
and some pests, such as small roaches and woodlice, are troublesome to 
every Orchid grower. After consulting all the available authorities on 
insecticides—the U.S. Government Experiment Stations have issued 
numerous bulletins on the subject—I constructed an airtight chamber of 
wood and glass, like an aquarium, closed by a moveable pane on top, 
resting on strips of a very soft thick cotton material, and tried fumigating 
the plants, both old and young, with carbon bisulphide. My chamber is 
14 by 14 by 24 inches, and hence contains 25 cubic feet of space For this 
one fluid dram of the carbon bisulphide, introduced in a saucer, suffices, 
and the chamber is tightly closed for three or four hours. I cannot see the 
slightest injury, either at the time or afterwards, to germinating seeds, 
small plants or full grown ones, while the vapour, penetrating everywhere, 
destroys every trace of animal life, whether woodlouse, slug, worm, or 
insect. The only objection I have found to it so far is that it discolors 
and perhaps corrodes copper wire, and thus might introduce salts of 
copper, where they possibly might do damage to roots. It does not affect 
galvanised wire. If all newly-imported plants were thus fumigated it 
would dispose of many a destructive insect that otherwise might be set 
loose to prey on other plants in the collection. This is a practical matter, 
which ought to be known and more widely experimented on. 
THEODORE L. MEAD, 
Oviedo, Flo., U.S.A. 
