BIBLIOGRAPHY. 35 
Outdoor plants: Pumpkin, squash, cucumber, roses, violets, box- 
elder, and bean. 
Greenhouse plants: Cucumber, violets, and chrysanthemums. 
Judging from the data gathered in the foregoing experiments this 
spray, when properly used, should control the red spider on all plants 
except those mentioned in the following paragraphs : 
Sweet -peas. — The foliage of the sweet pea is very hairy, and that of 
the carnation and greenhouse rose is so smooth that the flour paste 
will not stick to it and therefore does not work satisfactorily. The 
control of mites upon these plants is taken up separately in succeeding 
paragraphs. The finer forms of sulphur are effective upon the red 
spider attacking sweet pea (see p. 22) provided that the plants are 
growing in a warm, sunny place. The sulphur should be thoroughly 
dusted onto the infested plants, the application being repeated every 
week or so. 
Roses. — Most roses can be sprayed with flour paste, 8-100, but the 
leaves of roses grown in greenhouses are so smooth and glossy that 
the paste will not stick to them. The old method of washing them 
with the garden hose remains as the best remedy in this case. 
Carnations. — A weak salt or soap solution is used by some growers 
as a control for the red spider, but continual spraying with water is 
the universal method of control. 
Use of sulphur.— As stated on page 22, dry -sulphur will control the 
mites upon those plants which expose most of both surfaces of their 
leaves to the sun during the day, but the Hour-paste spray is so 
cheap, available, and effective that where large areas are involved it 
is recommended in preference to the sulphur treatment. Sulphur, 
however, has proved more or less effective upon the squash, pumpkin, 
sweet pea, and bean. 
BIBLIOGRAPHY. 
There have been few publications issued upon Tetranychus bimacu- 
latus under that name, but it has been recently decided by Mr. Nathan 
Banks, of the Bureau of Entomology, that the cotton red spider 
{Tetranychus gloveri Banks) is synonymous with Tetranychus bimacu- 
latus Harvey, and references to this name are included in the following 
list. It is also more than probable that many of the mites referred 
to by American writers under the name of Tetranychus telarius are 
really T. bimaculatus , so that the more important references to that 
species are included below. 
1. Saunders, Wm — Can. Ent., vol. 12, pp. 237-238, fig. 22, 1880. 
Mention as Tetranychus telarius; popular account of red spider on violet. 
2. Atkinson, G. F.— Kept. S. C. Agr. Exp. Sta. for 1888, pp. 28-29, 1888. 
Mention as Tetranychus telarius; brief notes on injury to cotton. 
3. Washburn, F. L.— Bui. 18, Oreg. Agr. Exp. Sta., p. 10, 1892. 
T. telarius; brief note on red spider. 
