38 



of May, some of them pupating, however, as early as the 5th 

 April. Finally, the images from these pupae appear in May and 

 J une. 



We are, unfortunately, unable to say as yet whether this insect 

 is dependent on an opportunity to breed in volunteer grain, whether 

 it may breed in other grass-like plants, or whether it may, on oc- 

 casion, suppress its midsummer brood and content itself tempora- 

 rily with two generations a year. 



The fact that the bulb worm occurs in volunteer wheat con- 

 temporaneously with the fly and in the corresponding stages, 

 makes available for the control of this insect the measures recom- 

 mended against its better- known companion. To recapitulate these 

 briefly, if stubble ground be so managed as to promote a growth of 

 volunteer grain at such an interval before seeding that the final 

 preparation of the so,il will destroy the young growth while the 

 bulb worms infesting it are still too young to complete their trans- 

 formation, this must necessarily check the multiplication of 

 the pest, if it does not completely arrest it. There is, however, 

 a possibility that this insect will be found to breed in volunteer 

 oats as well as in the winter grains, in which case the method 

 outlined above will probably be of less effect than for the Hessian 



fly- 



One interesting feature in the natural history of this species 

 still remains undetermined. At present no mode of hibernation of 

 the Meromyza is known except that in the larva stage in winter wheat 

 or rye; but the imago has been decidedly abundant in summer in 

 regions where winter grain is raised in very small quantity, and 

 where, nevertheless, it did not suffer noticeably from insect injuries. 



We have here, consequently, grounds for the suggestion that 

 this species may develop in other plants than the various grains 

 which alone it has hitherto been known to attack. 



