PART IV.
(b) That, in order that the lists may be uniform, they should be
compiled in the following form :—
(a) Name, (b) Reference to original description, (c¢) Distribution,
 (d) Food plants and alternative hosts, (e) Status as a.
pest, (f) Predators and parasites, (g) Further notes.
(c. That the Imperial Bureau of Entomology and Imperial
Bureau of Mycology in London should be approached with
a view to the compilation, classification and publication of
the lists by them.
13. That each Department of Agriculture of South and Hast
African Territories should undertake to notify, without delay, every
other such Department of the presence of a new disease or pest
considered to be of economic importance.
14. That a study should be made of the insecticidal properties
of native plants.
15. That uniform legislation should apply to importation of
plants and seeds into Kenya and Uganda.
ENCLOSURE TO PART IV. ENTOMOLOGY AND MYCOLOGY.
Record of Proceedings in the Entomological and Mycological Section in
regard to Cotton Pests.
PINK BOLL WORM.
Mr. HARGREAVES read the following paper which had been
prepared by Mr. Hancock in regard to Pink Boll Worm occurring on
Hibiscus diversifolius (referred to in agenda as T.C.(C)E. & M.4):
This note is to draw attention to the occurrence in Uganda of a
species of Platyedra closely related to P. gossypiella, Saund, which has
been found feeding on a wild species of Hibiscus, namely H.
diversifolius.
Specimens of this insect, which are exhibited here, have been
examined by Mr. Meyrick who considers them to be identical with
Platyedra gossypiella, Saund, the pink boll-worm of cotton.
In view of the fact that this insect does not feed on cotton in the
field and that the arrangement of the crochets on the prolegs of the
larva differs somewhat from that of the larva of the cotton feeding
Platyedra it will be well to consider this form a distinct race or species
of Platyedra. As you will see from the mounted specimen of the
larva there is a distinct break in the horseshoe arrangement of the
cotton-feeding form. This Hibiscus-feeding form is perhaps closely
related to the species which are being described from Australia but
at the time of writing neither specimens nor descriptions of these
forms have been received.
There appears however little danger from this insect. A careful
search has not revealed it on cotton nor has it been found in samples
of cotton seed received from ginneries from all parts of Uganda.
In the laboratory. a young larva was induced to feed in a young
cotton boll, and having completed its metamorphosis, emerged as a
perfect moth. It has so far not been possible to induce larvae to eat
full grown cotton bolls or to feed on cotton seed.

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