240 JOURN.\L OF ECONOMIC ENTOMOLOGY [Vol. 15 



per cent, infested and the next one will be sixty -five per cent. loss. This 

 makes the determination of the general dollars and cents loss almost 

 an impossibility unless one looks at them and canvasses every field 

 oneself. An tin trained man who has not really worked over a set of 

 cobs and can tell the percentage of kernels involved and the stalk loss 

 associated therewith, cannot give valid information. I am sorry, Dr. 

 Felt, that it is impossible to give you the information. 

 President Arthur Gibson: The next paper is by R. C. Treherne. 



THE ONION MAGGOT IN BRITISH COLUMBIA UNDER 

 IRRIGATED CONDITIONS 



By R. C. Treherne, Ottawa, Can. 



(Withdrawn for publication in the 52d Report of the Entomological 

 Society of Ontario.) 



President Arthur Gibson; The next paper is by L. Caesar. 



THE CABBAGE ROOT MAGGOT 



By L. Qaesar, Guelph, Canada 

 (Withdrawn for publication in the 52d Report of the Entomological 

 Society of Ontario.) 



President Arthut Gibson: The next paper is by Glenn W. Herrick. 



THE LIFE HISTORY, HABITS AND INJURIES OF THE 

 MAPLE CASE-BEARER 



By Glenn W. Herrick, Ithaca, N. Y. 



(Withdrawn for publication elsewhere.) 



President Arthur Gibson: The next paper is by J. W. McColloch. 



LONGEVITY OF THE LARVAL STAGE OF THE CADELLE^ 



By J. W. McColloch, Associate Entomologist, Kansas Agricultural Experiment 



Station 



The Cadelle {Tenebroides mauritanicus Linn.) in spite of its impor- 

 tance as a pest of stored grain and grain products has not been the sub- 

 ject of any extensive life history studies. Curtis^ (p. 332) reports the 

 rearing of a beetle by Kirkup from a Spanish almond. The larva 

 lived fifteen months in addition to the period it had been in existence 

 before its discovery and the beetle remained alive for 21- months. 



'Contribution No. 72 from the Entomological Laboratory, Kansas State Agricul- 

 tural College and Experiment Station. 



^Curtis, John. 1883 Farm Insects. John Van Voorst, London. 



