4o8 TackardiiiKT. 



and with four longer spines projecting beyond the serrated fringe. Anal 

 ring with ten stout sets. Rostrum approximately central. Antennae com- 

 paratively well developed, four-jointed {fig. 15) ; situated close to and im- 

 mediately in front of the rostrum. Dorsal spiracles large {fig- 13) ; situated 

 laterally near the bases of the stigmatic processes {sQ&fig. 10) ; each spiracle 

 set in an area crowded with ceriferous pores and surrounded by a subcircular 

 or broadly pyriform chitinous plate. Ventral spiracles smaller, placed shortly 

 behind the rostrum, surrounded by a dense group of ceriferous pores {fig. 14). 

 Dorsal spine {fig. 11) slender, acutely pointed, with its base abruptly ex- 

 panded into a transversely flattened disc. The spine is set upon a long and 

 slender pedicel which is easily detached (and lost) during the preparation 

 of dried examples of the insect. After maceration several series of ceriferous 

 pores— each of which has distinct characters — can be observed (see fig. 10). 

 There is a submarginal series of six linear groups associated with the sub- 

 marginal pits, the pores trumpet-shaped when viewed in profile {fig. 16) ; four 

 scattered groups of small tubular pores {fig. 17) surrounding the rostrum, and 

 a series of crowded groups of circular pores encircling the base of the caudal 

 process, each group broken into irregular smaller clusters {fig. 18). Length of 

 extended insect (under compression) 3 to 4 mm. 



The early nymphal test is stellate {fig. 5), with three rays on each side. 

 Increase in growth is effected by the extension of larger processes from the 

 intervals between the rays of the earlier stage {see fig. 4). The later nymphal 

 test is accordingly still six-rayed, but the direction of the rays is different, 

 there being now two stout conical arms on each side, with single anterior and 

 posterior truncate processes in the direction of the main axis of the body. The 

 earlier form is still traceable upon the disc of the later test. I have been unable 

 to follow out the subsequent transformations ; but, from the position of the 

 crenulate lobes on the test of the early adult female {see fig. 3) it is probable 

 that increase in size continues to be effected by interstitial growth. 



On Mimosa sp., Anona palustris., Exccccaria agallocha, and Croton lacci- 

 ferum. Kandy ; Matale ; Jaffna ; Tangalla. 



This species is much less abundant than 7". albizzice. The resin is con- 

 sidered to be superior, and is greatly valued by the lac-workers of Matale and 

 Tangalla, who distinguish it by the name of ' Tela-kiriya laccada.' 



TACHARDIA LACCA, Kert. 

 (Plate CLXXI.) 



Coccus lacca, Kerr, Philos. Tratts., Vol. LXXI. p. 374, 1782. 

 Coccus ficus, Fab., Matit. Int., Vol. II. p. 319, 1787. 

 Carteria lacca, Sign., An?i Soc. E?ii. Fr. (5), Vol. IV. p. 102, 1874. 

 Tachardia lacca, Green, Cocc. Ceyloji, Vol. I. p. 3, 1896. 



Resinous tests of adult females closely agglomerated, forming an incrustation 

 upon the branches {fig. i, 8) varying in thickness from 4 to 7 mm. At an early 

 stage of development, while the individuals are still isolated, the test of the 

 female is of a symmetrical form {fig. 11), with a double lateral series of rounded 



