Mr. Fletcher, 
114 PROCEEDINGS OF THE SECOND ENTOMOLOGICATL MEETING 
Gelechia. This is especially necessary when cotton is not 
available for food. 
(d) Irrigation of areas which have been under cotton, if practi- 
cable, in spring after crop has been removed. TI the soil 
is wetted when the temperature is high, many larve resting 
in the ground are induced to abandon the resting-stage, 
come to the surface, pupate and emerge as moths. 
(e) Karly maturing varieties are less exposed to attack, and 
sowings should therefore be made as early as possible. 
(2) Methods for use with seed. 
Ii infected seed is sown, subsequent infection of the resulting crop 
can only be expected. It is therefore of importance to 
destroy the resting larvee in the seed before sowing. This 
can be done in various ways :— 
(a) For small quantities immersion for 5-10 minutes in hot 
water (130° F.) is efficient. 
(6) Exposure to Sun’s heat (about May, when really hot) is 
effective for small quantities spread thinly so that every 
seed is reached. A temperature of 50°C. for a short 
time is fatal to the larve. 
(c) Fumigation with Carbon Bisulphide or Hydrocyanic Acid 
gas is also effective, but a proper vacuum apparatus is 
really required to attain the best results and fumigation 
is hardly possible to the cultivator. In the case of Agri- 
cultural Stations, where fumigation could be applied to 
seed on a large scale, in combination with the issue 
of pure seed to the cultivators, this method deserves trial 
in India. ; 
(d) Storage of cotton seed (either surplus after sowing, for 
crushing, or for running and setting gins) 1s a highly 
dangerous proceeding. 
Anatrachyntis simplex has been bred from cotton-bolls on various 
occasions but, so far as I can make, is merely a rubbish feeder and not 
apest. [tis referred to in “ South Indian Insects,” pp. 458-459, fig. 334, 
under the name Pyroderces coriacella, but Mv. Meyrick has since then 
founded the genus Anatrachyntis as separate from Pyroderces and Lord 
Walsingham has informed me that he has re-examined his type of s¢mplex 
and considers that it is identical with coriacella, Snellen ; so that both 
names of this species have been changed. 
Anatrachyntis falcatella has also been bred at Pusa from cotton shoots 
but this also is probably a rubbish feeder and not a pest of cotton. 
