134 Mr. K. Kunhi Kannan on 



Bangalore, when as early as 1913 the degeneration had 

 already taken place all over Mysore and Coorg. In Ban- 

 galore itself, specimens from the same locality and elsewhere 

 show the degeneration. 



The variability in the number of segments in the an- 

 tennae appears to be of frequent occurrence in the genus 

 Lecanium, and also in Pulvinaria. I tabulate below the 

 variations noted by Mr. Newstead in his book on " The 

 Coccidae of the British Isles," and by Green in his " Coo 

 cidae of Ceylon," the only literature on the subject to 

 which I have been able to gain access. 



From " The Coccidae of the British Isles." 



An analysis of these variations shows that of the total 

 number of 51 species (42 Lecanium and 9 Pulvinaria) 

 described in the two books there is variation recorded in 

 J7. viz. 33-| per cent, of the number. Of these 17. the 

 variation is by the addition of a segment in L2, by the 

 reduction of a segment or two in 4 and by both in 1. It 

 is thus clear that the reduction from seven to three in 

 Coccus viridis cannot be placed in this category, but has 



