LAMELLICORN-BEETLES. 101 



they immediately turn upon their backs, and by the aVternate 

 contractions and expansions of their body segments they wriggle 

 away in a straight hne. This is also shown in Fig. 107. 



Remedies against the adults are of little avail. Prof. Smith 

 says that a heavy top dressing of kainit and tobacco has proved 

 to be as effective as anything in dealing with the larvae in the 

 ground. If the trouble is only local, for instance if only small 

 lawns are injured by their presence, kerosene emulsion, diluted 

 ten times with water, and then washed into the soil by frequent 

 waterings or by rain, has proved effective. This remedy has 

 been very successfully applied in Washington. But as the larvse 

 feed upon decaying vegetable matter, or only in soils richly 

 manured, their presence in large numbers is only injurious in dry 

 weather, since the burrows made by them have 'the influence of 

 drying the soil very rapidly. During a wet season the damage 

 they cause is very slight, and many such grubs may be in a 

 lawn without in any way revealing their presence. The insect 

 is injurious only in the winged stage, and very decidedly so if 

 at all numerous. 



The genus Euphoria represents the more typical flower- 

 beetles, which are distinguished by the margin of each wing-cover 

 having near its base a large wavy indentation, which enables 

 these sun-loving insects to expand their true wings very rapidly, 

 hence they can fly as soon as they wish, without any long prepara- 

 tion, which is necessary in other cases described before. The 

 mouth of such beetles is provided with a brush for sucking pollen. 

 A number of such beetles are found in Minnesota, but only one is 

 very common and decidedly injurious. 



THE INDIAN CETONIA. 



(Euphoria iinia Linn.). 



This is a yellowish-brown beetle, having the wing-covers 

 covered all over with small and irregular black spots, which in 

 some well-marked specimens form confused bands across the 

 wing-cases. The whole insect is covered more or less densely 



