452 Monophlebince. 



On stems of Grevillea, Citrus, Terminalia, 7y/^j'/^^/a,and unidentified jungle 

 trees. Kandy, Gampola, Galagedara, Passara, and Delft Island. Received also 

 from South India. 



A form with the derm more densely clothed with spines and setce, and with 

 more crowded pores, may eventually prove to be distinct ; but the available 

 material is insufficient to determine this point. 



ASPIDOPROCTUS EUPHORBI/E, Grcpj. 

 (Plate CLXXXIX.) 

 Walkeriana eicphorbicc, Green, Ini. Mus. Notes, Vol. IV. No. i, p. 6 (1896). 



Adult female {fig. i, 2, 3 and 4) ovoid, narrower in front ; the abdominal 

 area highly convex after gestation. Colour dull reddish orange, paler beneath ; 

 the dorsum closely covered with greyish granular wax. Waxy processes white, 

 stout, curved, either truncate or pointed ; arranged as in W. cinerea, viz., a 

 double median series of from eight to ten pairs, directed upwards and forwards, 

 the posterior three or four pairs sometimes confluent ; a dorso-lateral series of 

 ten to twelve on each side, directed downwards and backwards ; followed by 

 overlapping submarginal and marginal series, the former directed downwards, the 

 latter directed outwards and slightly upturned at the tips. Venter with thin 

 whitish mealy secretion. Abdomen concave below, with a felted operculum 

 stretched across the cavity (see fig. 2). Median thoracic area usually with a 

 blackish pad (.'' congealed latex of the plant) occupying the space between the 

 limbs and concealing the mouth parts. Antenna {fig. 8) normally ten-jointed 

 occasionally eleven-jointed by subdivision of one of the median joints {^fig. 9) ; 

 the terminal joint with scattered hairs, the other joints each with an irregular 

 circlet of hairs on the distal margin. Legs {fig. 12) comparatively small ; the 

 inner face of femur and trochanter each with two projecting seta;, one very 

 much longer than the other ; tarsus approxima'ely half the length of tibia ; 

 claw {fig. 13) falcate ; ungual and tarsal digitules simple, slender. Abdominal 

 spiracles in the form of a simple chitinous ring ; at least three pairs, probably 

 more. Dermal characters scarcely distinguishable from those of cinerea; the 

 spines (yf^j'. 19, 20) slightly smaller and more slender than in that species 

 Ceriferous tracts ill-defined. Anal ring {fig. 11) composed of very irregularly 

 polygonal cells. Over all dimensions 9 mm. by 6 to 7 mm. Denuded insect 5 

 to 6 mm. long. 



Ova bright yellow. 



Newly hatched larva {figs. 5, 6) orange yellow, lightly dusted with whitish 

 mealy powder. Legs and antennte ochreous. Eyes black, placed on the 

 under surface of the head, close to the base of each antenna. Margin with a 

 fringe of long, delicate, glassy filaments. Antenna {fig. 10) five-jointed ; the 

 terminal joint largest, claviform ; the fourth joint smallest. Length i'25 mm. 



Later larva {fig. 7) with loose white tufts, in series corresponding with the 

 processes of the adult insect. 



On Euphorbia antiquoruin ; Hambantota and Habarana. 



