^74 DactylopiincB. 



preceding joints. Limbs small ; tibia and tarsus together approximately equa 

 to the femoral joint {^fig. 5), the tarsus slightly shorter than the tibia; ungual 

 digitules very slightly dilated. Anal segment {fig. 5), with a longish caudal 

 seta and two stout sharply pointed spines on each side ; some longish hairs are 

 distributed over both dorsum and venter in the neighbourhood of the anal ring. 

 In some examples there is a smaller pair of pointed spines and a longish hair 

 on the lateral margins of the penultimate segment. Remaining segments of the 

 body without spines or ceriferous tracts. Anal ring comparatively large ; with 

 six stout set^ that are only slightly shorter than the caudal setae. Derm with 

 numerous circular ceriferous pores which are more crowded towards the margins 

 of the body and on the posterior segments. They are of two sizes, some very 

 minute pores being interspersed amongst others of a comparatively large size 

 {see fig. 6). The posterior dorsal glandular fovea; are small and inconspicuous ; 

 anterior fove^ absent or obsolescent. Length 3 to 4 mm. Breadth i to 

 i"5o mm. 



On grasses ; concealed between the stem and the enveloping bases of the 

 leaves {fig. i). Pundaluoya. 



The insect constructs no definite ovisac, but surrounds itself with a con- 

 siderable quantity of pulverulent wax, amongst which the eggs are deposited. 



The species has, hitherto, been recorded from Great Britain only, but has 

 probably a very much wider distribution. The insect is so well concealed, and 

 is itself so inconspicuous, that it may be very easily overlooked. 



In examples from Ceylon both the limbs and antennae are distinctly smaller 

 than in typical British examples, and the tibiae are relatively shorter. 



PSEUDOCOCCUS PULVERARIUS, subsfi. BAMBUS^, nov. 

 (Plate CLI. 7-10.) 



Adult female differing from the typical insect occurring on grasses in the 

 considerably larger size of all the parts of the body (compare figs. 4, 5 and 

 8,9). 



Antenna {fig. 8) eight-jointed, the divisions between the second and third 

 and between the seventh and eighth joints somewhat weakly defined ; eighth 

 comparatively short, only slightly longer than second ; third shortest. 



Legs {fig. 9) stout. Anal ring {fig. 10) with a loose chain of large cells, 

 and six longish setas. There are, usually, paired spines on the terminal, the pen- 

 ultimate and, occasionally, on the antepenultimate segment also. Hairs, pores, 

 and other dermal characters as in the type. Length 3-50 to 475 mm. Breadth 

 175 to 2*o mm. 



Concealed between the stipules and stems of a species of Bamboo : Pun- 

 daluoya. 



The adult female surrounds itself with a considerable quantity of powdery 

 white secretion. 



Comparison of the relative proportions of the limbs shows that those of the 

 form on Bamboo are from one-quarter to one-third larger than those of the 

 orm on grasses. 



