SUPPLEMENTARY NOTES ON THE COCGIBJE OF CEYLON. 347 



of its elono-ate form. The pygidial characters agree more with those 

 of the genus Odonaspis than with Chionaspis.) 



AONIDIA EOHINATA, n. sp. (PI. J, figS. 17 to 19.) 



9 Puparium (fig. 17) dull reddish-brown (yellowish when immature), 

 roughened with innumerable slender curved spines which are firmly 

 attached to the nymphal pellicle and persist after treatment with caustic- 

 potash. Circular ; strongly convex. Larval pellicle deciduous, — pushed 

 off durino' orowth of nymphal pellicle. Diameter 0*35 mm. 



$ Puparium pale-yellowish. Oblong oval : secretionary area flattish : 

 pellicle strongly convex, situate at anterior extremity. Length 0*75 mm. 



Adult 9 (fi>. 18) subcircular. Rostral apparatus very large and 

 conspicuous. No parastigmatic glands. Pygidium (fig. 19) with six 

 excurved thorn-like processes (? lobes). Diameter about O'SO mm. 



Adult $ not observed. 



On Hemicyclia sepiaria. Anaradhapura. February. 



The insects are thickly clustered on the under-surface of the leaves 

 and are surrounded by a whitish bloom such as is noticeable around 

 some species of Fiorinia and many Aleurodidce. 



Aonidia pusilla n. sp. ( PI. J, figs. 20, 21 %). 



9 Puparium (fig. 20) oval ; yellow ; obscured — in very fresh ex- 

 amples —by a thin covering of whitish secretion which, in older examples, 

 persists only as a marginal fringe, leaving the yellow nymphal pellicle 

 exposed. Larval pellicle deciduous. Nymphal pellicle with median area 

 stronoly convex and globose : cephalic area flattened and anteriorly pro- 

 duced : pygidial area similarly produced backwards and apparently articu- 

 lated with the body of the scale to form a hinged operculum beneath which 

 the young larvae escape : margin of pygidium with ten narrow prominent 

 lobes, and broad semilunar pores between them. Total length 0*50 mm. 



$ Puparium oval ; somewhat larger, but much less convex : pellicle 

 pale-yellow, occupying anterior two-thirds of puparium : secretionary 

 area whitish, translucent. Length 0*65 mm. 



Adult 9 broadly oval : pygidial area very slightly prominent. No 

 parastigmatic or circumgenital glands. Margin of pygidium (fig. 21) 

 with two small conical lobes, one on each side of a median clavate 

 prominence which projects beyond them : margin immediately outside 

 the lobes also projecting in three or four small rounded prominences. 

 Some scattered circular pores. Anal orifice large and conspicuous. 

 Length about 0*30 mm. 



