304 TiMEHRt. 



places, so as to touch the secret spots whither the 

 larvse resort. 



Orthezia insignis. — This, like the foregoing, is an 

 Aphis. The part by which it adheres, or the body of the in- 

 se6l, is dark in colour with quite an elongated white waxen 

 appendage which develops with the inse6l. In the 

 very early stage of development, little or no appearance 

 of this appendage is visible ; only the dark body with 

 slight traces of a waxen fringe here and there. This 

 pest, however, alfefts many plants, especially those that 

 are herbaceous or soft of texture. When found on more 

 woody plants it seems to live principally on the young 

 growth — the outer parts of the shoots. Wherever found 

 it is in colonies, each individual apparently trying to out- 

 do his neighbour in getting at the most delicate parts. 

 But although common it is not nearly so destru6live or 

 troublesome as many of its allies. In the young stage it 

 is very abundant ; after it becomes fully developed, it is 

 easier preyed upon by its natural enemies, which play an 

 important part in limiting its ravages. In this respe6l 

 no inse6ts are more assiduous than the grubs of the 

 different species of Coccinella, Syrphus, the various 

 Hemerohiidx, of which the different species oiChrysopha 

 a6l a chief part. If they had not these natural enemies 

 to subdue them, the efforts of man would be unavailing, 

 so great is their power of reprodu6tion and the voracity 

 with which they feed. 



Ischnaspis jiliformis, — A somewhat elongated small 

 white looking scale, commonly seen on mango leaves 

 and fruit, in patches or groups. In its attacks it 

 seldom fails to extra6l all the life from the parts of the 

 plant on which it has colonised. It does not prey upon 



