448 Moitophlebince. 



{s^&Jig. 2). Antenna {fig. 6) ten-jointed, sometimes with an incomplete hyaline 

 band across the tenth ; tenth longest and tapering to a bluntly pointed 

 extremity ; each of the first nine joints with a ring ot setJE on its anterior rim, 

 the tenth with scattered sette. Legs comparatively small {fig. 8). Claw 

 (y^c?"' 9) stout and falcate, with simple slender digitules. Derm of dorsum 

 clothed with longish hollow spines which are broad at the base but taper to a 

 sharp point {fig. 11). These spines are more concentrated and densely 

 crowded on sharply defined ceriferous tracts corresponding with the series of 

 waxy processes (see fig. 10) ; each tract circumscribed by a ring of dense, 

 prominent, tubular pores which — seen in profile — present the appearance shown 

 at figure 12. Viewed from above, the orifice of the pores varies in form at 

 different depths, being somewhat triangular above and cruciform or quadri- 

 locular below {see fig. 11). A few simpler quadrilocular pores are scattered 

 over the general surface, and there are a few stout seta; interspersed among the 

 spines. Venter sparsely clothed with similar but more slender spines. A 

 densely crowded band of prominent quadrilocular pores (and a few smaller 

 pores with stellate orifices) extends across the venter, at the base of the 

 abdomen (fig. 14). There are at least five pairs of abdominal spiracles, each 

 opening into one of the dorso-lateral ceriferous tracts, under which conditions 

 they can scarcely be functional. Anal aperture marked by a dense cluster of 

 long stout setee. In addition to the usual three post-genital cicatrices are others 

 on the preceding three segments. Length of old adult female, with ovisac, 

 including processes, 14 mm. Length before formation of ovisac, 10 mm. 

 Length of denuded insect 6 to 8 mm. 



Eggs bright pale yellow. 



Newly hatched larva {fig. 5) pinkish orange ; with median, dorso-lateral and 

 dorso-marginal series of small waxy cushions, and numerous extremely long, 

 slender, glassy filaments. Antenna {fig. 7) five-jointed, the terminal joint 

 longest. Derm with long, slender, acutely pointed, tubular spines and elongate 

 tubular pores {see fig. 15). Length i'25 mm. 



On Dodofiaa viscosa. Chilaw and Putalam. 



WALKERIANA OVILLA, sfi. nov. 

 (Plate CLXXXVIL) 



Adult female {fig. i) convex ; broadly oval. The dorsum completely 

 covered with stout, white or greyish, curved chalky processes (often banded 

 with brown) ; with a few delicate glassy filaments in the interstices. The pro- 

 cesses are arranged in close longitudinal series, the innermost projecting 

 directly forwards and recurved at their tips ; the processes of the second series 

 are backwardly directed and sharply incurved ; the remaining series are more 

 irregular, the processes radiating more or less from the centre, but with a ten- 

 dency to curve forwards, except at the posterior extremity. The arrange- 

 ment of the series is often confused, and varies in almost every individual. 



Antenna {fig. 4) ten-jointed ; the second joint largest, thence gradually 



