PROCEEDINGS OF THE THIED ENTOMOLOGICAL MEETING 



73 



On 26th November 1916 the damage in the samples 2, 3 and 4 was 

 ■due to Rhizopertha dominica, and in the others to Caland/a oryzce. On 

 the 14th March 1917 Rhizopertha was helped by Calandra in samples 

 2, 3 and 4 and in the others Calandra did the work. There were some 

 Tribolium castaneum, Lcemophloeus pusillus and Tenebroides mauritanicus 

 grubs and beetles in all. The salt moistened the grains and caused them 

 to rot. 



Experiment VI. 



Four pounds of wheat, Pusa No. 6, were stored on 20th May 1916 

 in gunny bags mixed with the following and were examined on two 

 occasions when weights were taken after sieving out the dirt and insects 

 but not the juar seeds, etc. 



Mixed with 



Weight on 

 26th No- 

 vember 1916 



Weight on 



14th March 



1917 



Remarks 



Juar seeds, \Vo. 



Blown salt, 2 oz. 



Murhi .... 



Nim leaves 



Fumigated with CS, for 48 hours 



(Check) . . " . 



(Check) .... 



lb. oz. 



2 14i 



2 7 



2 8 



2 5 



2 9^ 



2 7 



2 7 



lb. oz. 



All damaged by Calandra oryzce. There were some Tribolium casta- 

 neum and Tenebroides mauritanicus grubs and beetles in all. 



On the 26th November 1916 in each of these bags there were about 

 70 to 130 Tenebroides mauritanicus grubs. These grubs would not 

 attain the adult stage until the next hot weather. The grubs were 

 feeding on grains and also on the dust produced by Calandra oryzce. 

 It is apparent that Tenebroides mauritanicus can be of hardly any help 

 against the other store pests as by the time the beetles (which to some 

 extent prey upon adult Calandra oryzce) would appear there would be 

 nothing left of the grains. 'i 



ExperimstW^ VII . 



A. — Twenty-five pounds of wheat were stored between 14th and 

 15th May 1916 in earthen vessels with earthen covers (Plate 111, fig. 3) 

 and examined on two occasions and weighed after sieving out the dirf 

 iind insects as much as possible, but with eaten grains or corroded shells. 



X2 



