ICERYA PURCHASI. 79 



3 mm. in length " [that is, over the eighth of an English 

 inch in length E. A. 0.], " and has an average wing- 

 expanse of 7*5 mm. The general colour is orange-red." 

 The thorax is much marked with black ; some of the 

 spiracles are black also. " The legs are also nearly 

 black, and quite thickly furnished with short hairs. The 

 wings are smoky black, and are covered with rounded 

 wavy elevations, making a reticulate surface. The costa 

 is thick and brown above the subcostal vein, which 

 reaches costa at a trifle more than four-fifths the length 

 of the wing. The only other vein (the median) is given 

 oif at about one-sixth of the length of the wing, and 

 extends out into the disk a little more than one-half the 

 wing-length. There are in addition two white lines, one 

 extending" ... to the tip of the wing, the other 

 curving to a point some distance below the tip. " The 

 abdomen is slightly hairy, . . . and is furnished at tip 

 with two strong projections, each of which bears at 

 tip four long hairs and a few shorter ones. When the 

 insect is at rest the wings lie flat on the back." The 

 head above is triangular ; the antennas are light brown 

 in colour, and are composed of ten joints, of which the 

 first is almost globular, the second somewhat longer, 

 and the third nearly twice as long as the first, and the 

 remaining seven joints are of about the same length 

 as the third, "and grow successively a little more 

 slender. 1 ' 



MEASURES OF PREVENTION AND EEMEDY. 



The following observations and recipes are given as 

 not only referring to applications for destruction of 

 Australian Bug, but for reference with regard to many 

 other insect attacks which may be much checked by 

 soft-soap washes : 



Washes. 



Looking at the impossibility of clearing more than a 

 very small proportion of the pest by hand-picking (as 



