Dorothy J. Jackson 71 



majority of these beetles had been bred at the roots of peas, beans and 

 tares and when these crops were cut had migrated to the clover and 

 lucerne. It would appear unlikely that many of these beetles had been 

 bred at the roots of the clover itself judging from the fact that the beetles 

 are comparatively scarce upon clover in this district during the breeding 

 season in spring, although they abound at this time upon peas, beans 

 and tares, and also frequent lucerne. In the old pea and bean fields at 

 the end of July many of the newly emerged beetles were still to be found 

 amongst the stooks and when these were harvested a few remained under 

 weeds upon the ground. They were also to be found amongst clover 

 growing in permanent pastures and on waste ground. A certain number 

 of other Sitones also occurred upon clover at this time. These included 

 S. puncticollis Steph., flavescens Marsh, sulcifrons Thunb. and hispi- 

 dulus F., species which (as will be shown in a subsequent article) live 

 upon clover throughout the year and breed at its roots. Lucerne was 

 also frequented by S. hispidulus and S. crinitus Herbst. These species 

 contributed towards the general attack, but all were outnumbered by 

 S. lineatus L. 



REFERENCE. 



(1) Jackson, D. J. Bionomics of Weevils of the genus Sitones injurious to Legu- 

 minous Crops in Britain. Ann. App. Biol, vn, pp. 269-298. 



{Received September I8th, 1921.) 



