GO 
20. Cockerell, T. D. A.—The Entomologist, Nov. L888, p. 279. 
States that the larvae exhibited before the South London Ento¬ 
mological Society in June, 1887 (see No. 11), although found in 
flour which came from America, are supposed to have come from 
some infested Trieste flour which was in the same warehouse. 
21. Poulton, E. B.—Trans. Ent. Soc. Lond., Dec., 1888, pp. 
598, 599. 
Under the caption “The Determination of Sex in certain Lepi- 
dopterous Larvae,” gives an interesting item concerning the larva 
of Ephestia kuehniella. Demonstrated by observation and experi¬ 
ment that larvae with dark spots on the dorsal surface of the 
fifth abdominal segment always developed as males, and that the 
spots are embryonic testicles. 
22. Brocchi, P.—Bull, du Ministere de 1’Agriculture, 1888. 
A brief summary of the past history of the pest, with mention 
of remedies. 
1889. 
23. Ormerod, E. A.—Insect Life, Mar., 1889, v. 1, p. 314. 
A letter to Dr. C. V. Kiley regarding this pest in England. 
24. -Twelfth Rep. Inj. Ins. 1888, pp. 66-72. 
An interesting account of the outbreak of the flour moth in 
England. 
25. Riley, C. V., & Howard, L. O.—Insect Life, May, 1889, 
v. 1, p. 355. 
Mention of Ephestia kuehniella in connection with a review of 
Miss Ormerod’s Twelfth Report. 
26. Bryce, P. H.—Bull. I., Provincial Bd. Health, Ont. (Issued 
by Ont. Dept. Agr., Oct., 1889.) 
An important article concerning the Canadian outbreak. 
27. Riley, C. V., & Howard, L. O.—Insect Life, Dec., 1889, v. 2, 
pp. 166-171. 
Summary of history and literature, with original notes and ob¬ 
servations. 
28. Fletcher, James. —Insect Life, De3., 1889, v. 2, pp. 1S7-1S9. 
A letter to Dr. Riley regarding theCCanadian outbreak. 
1890. 
29. Fletcher, James. —Rep. Minister Agr. [Ottawa], 1889, App., 
pp. 73-79. 
A review of Dr. Bryce’s Bulletin (see No. 26), with much ad¬ 
ditional information regarding the Canadian outbreak. 
