148 Chionaspis . 



Chionaspis dilatata, sp. nov. 

 (Plate LI.) 



Female puparium {^fig. 2) very similar to that of varzcosa, usually with the 

 same vein-like surface markings (examples from 'Nutmeg' and 'Mango' 

 smoother). Second pellicle more opaque and of a deeper reddish brown colour. 

 The whole puparium and its component parts smaller than in varicosa. Length 

 2 mm. Breadth i'5o mm. Length of 2nd pellicle o"65 mm. 



Male puparium {fig. 3) feebly keeled. Length i mm. 



Adult female {fig. 4) of same form and colour as varicosa. Margin of 

 mesothorax without squames, and two or three only on metathorax. Pygidium 

 {fig. 5) with the first lateral lobes smaller and less prominent ; second lateral 

 lobes obsolete. Marginal squames fewer ; one on each of first to third spaces ; 

 one or two on fourth space ; and two or three on base. Dorsal pores also less 

 numerous ; present on the same number of segments. Circumgenital glands 

 smaller ; median group 4 to 8 ; upper laterals 9 to 16 ; lower laterals 11 to 18. 

 Length 075 to i mm. Breadth averaging o'5o mm. 



Adult male not observed. 



Habitat on Etirycles sp. Myristica moschata (nutmeg), and M. laurifoliaj 

 Kandy. Also on ' Mango ; ' Pundaluoya. Upon Eiirycles the female scales are 

 distributed over both surfaces of the leaf, the males being confined to the 

 under surface. Upon Myristica and ' Mango ' both sexes were observed on the 

 under surface only of the leaves. 



Altogether a smaller form than the preceding {varicosa), and distinguished 

 from it by the absence of the second pair of lateral lobes, and by the smaller 

 number of orifices in the circumgenital glands. 



EXPLANATION OF PLATE LI. 



Chionaspis dilatata. 

 {All figures except No. i, more or less enlarged) 



Fig. I. Piece oi\^2ii oi Etirycles, with insects, nat. size. 



2. Female puparium. 



3. Male puparium. 



4. Adult female, ventral view. 



5. „ „ pygidium, dorsal view. 



