446 MonophlebincE. 



In the nymph {fig. 2) the tomentum is shorter and not nearly so dense, 

 while the chalky processes are conspicuous and strongly developed. The 

 antennre in this stage have eight joints only. 



The young larva is coated with white meal, and secretes numerous long 

 colourless glassy filaments. Antennae five-jointed. Dermal characters similar 

 to those of the adult, but the spines and pores are smaller and less crowded 

 {fig. 14). There is a marginal series of long setoe, with two or three large and 

 strongly chitinous tubular pores at the base of each seta {fig. 15). Length 

 I '35 mm. 



On stems of Litsca zeylanica : Pundaluoya ; and on Grevillea, Maskeliya. 



The insect apparently has a life e.xtending over several years. Old 

 examples, with matted and discoloured tomentum, may be readily mistaken 

 for tufts of moss or lichen. 



The species is recorded from Ceylon only. I have myself found it only on 

 the stems of a small group of trees on the Fernlands Tea Estate — once the 

 residence of Mr. Nietner, who is believed to have been the original discoverer 

 of the species. I think it probable that the type specimens may have been 

 derived from this identical group of trees. Mr. J. C. Hutson has more recently 

 taken the same species on the stems of Grevillea trees in the Maskeliya 

 district. 



WALKERIANA COMPACTA, Green. 



(Plate CLXXXV.) 



IValkeriana cojiipacia, Green, Ind. Mus. Notes, Vol. IV. No. i, p. 6 (1896). 



Adult female {figs, i, 2 and 3) broadly oval ; strongly convex above ; 

 flattish beneath. Dull pale reddish ; the colour obscured or concealed by a 

 thin covering of greyish white waxy secretion. Legs reddish brown : coxcTC 

 darker. Dorsum {fig. 2) with longitudinal series of stout, truncate, conical, 

 waxy 'or chalky processes which are usually of an ochreous white tint, except on 

 the truncate extremities, which remain dead white. In some examples the 

 processes are somewhat widely separated ; in others they are broader, covering 

 practically the whole surface of the dorsum. The median series is composed of 

 six paired processes on the thoracic area, followed by the same number of 

 broadly transverse single plates on the abdominal area. The next series, 

 which may be called the sub-median, consists of smaller processes and is 

 interrupted on the anterior part of the thorax. This again is followed by a 

 dorso-lateral series, with large stout processes ; a lateral, with small slender 

 processes ; and a marginal (which forms a radiating fringe round the body of 

 the insect) with large stout processes. There are some delicate silky filaments 

 projecting from the margin, between the processes. Ventral surface thinly 

 coated with whitish powder. Antenna {fig. 4) ten-jointed ; all the joints, 

 except the tenth, broader than long ; tenth approximately twice as long as it is 

 broad ; a ring of short hairs near the distal extremity and many similar hairs 

 on the outer side of each joint. Legs comparatively small ; tarsus rather more 

 than half the length of the tibia {fig. 6). Claw {fig. 7) slender ; acutely 



