Diseases 27-5 



which has usually been found in great numbers 

 on all trees examined in Manila and in the 

 provinces. The scales crowd .themselves upon 

 both surfaces of the leaves of neglected or 

 deformed trees, and frequently as many as 

 four or five are found overlapping each other. 

 Other scale insects include : 



Parlatoria Greeni (Banks), a delicate but 

 prolific scale. It merits attention because of 

 the possibility of its great increase if neglected. 

 It is of a flat shape and grey colour, and diffi- 

 cult to detect. 



Ckionaspis Candida (Banks), showing a small, 

 pure white spot. This scale multiplies rapidly, 

 usually in the protected parts. 



Lepidosaphes Mcgregori (Banks) is compara- 

 tively rare. It occurs on both sides of the 

 leaves, especially on old ones, but seems to 

 prefer the upper surface near the midrib. It 

 may at times, although rarely, propagate under 

 favourable circumstances to the extent of being 

 injurious. It is always encountered singly. 

 The most noteworthy features which distinguish 

 it are the pair of white, waxy, horn-like pro- 

 jections on the front of the first pellicle, the 

 light colour of the female puparium, and the 

 regularity of its transverse striae. 



Lepidosaphes unicolor (Banks) is met less 

 frequently than L. Mcgregori and therefore 

 less likely to prove a menace. It has a 

 narrower, interior margin, and no waxy horns 

 in old specimens. 



