48 THE CANADIAN ENTOMOLOGIST. 



very successful ; but it needs to be almost daily repeated, and is, there- 

 fore, exceedingly troublesome, and quite impracticable where a large quan- 

 tity of potatoes are under cultivation. The usual method is to knock the 

 insects off the plant with a piece of shingle, into a dish or small pail con- 

 taining a little water ; as they readily fall when struck, both larva and 

 beetle may thus be collected in large numbers. 



ARK ALL POTATOES ALIKE LIABLE TO ATTACK? 



During the course of our inspection, we frequently met with gardens 

 and fields containing two or more kinds of potatoes, and observed that 

 in many instances one sort was very much more affected by the insect 

 than the others. The Mesliannock is particularly liable to attack, while 

 the Early Rose and Peach Blow are less so ; but where- the latter are the 

 only varieties planted, the insects do not hesitate to devour them. The 

 only practical suggestion we can make in reference to this point is, that it 

 might be well to plant a few of such sorts as are most liable to be injured, 

 s > as to attract the larger proportion of the insects to one spot, and thus 

 enable the cultivator to destroy them with less labor and expense. 



NATURAL REMEDIES. 



American Entomologists enumerate fourteen insects which prey upon 

 the Colorado Potato Beetle in some one or other of its stages. Eight of 

 these we know to be common in Canada, and probably some of the others 

 will also be found here. Of the insects we are now about to describe, the 

 first four feed on the eggs and larvae, the fifth upon the larvae only, and 

 the last two on both the larvae and perfect beetle. 



nQ - Lady-Birds.- -The commonest of these is called the nine- 



• spotted Lady-Bird ( Cocci nclla <p notata — Herbst.) See fig. 4.— 

 It is a small, round beetle, of a brick-red color, with nine black 

 spots on the wing cases, and may be found in almost every 

 part of Canada. 



Hippodamia maculata ( Dc Geer.) — The spotted Lady-Bird; 

 see fig. 5. This is a small, pinkish beetle, marked with large 

 black blotches. 



HG. G. 



Hippodamia j j punctata (Linn.) — The thirteen-dotted Lady- 

 Bird (see fig. 6) is somewhat larger than either of the pre- 

 ceding species, and has thirteen black spots on a brick-red 

 Js ground. 



Hippodamia convergens (Guer.) — The convergent Lady-Bird, 



