SCALE -INSECTS. 91 



mally enlarged, deformed ; rostrum, mentum, 

 and buccal apparatus absent. Eyes of male 

 facetted PORPHYKOPHORID.E. 



Adult females with antennae of eleven 

 joints ; covered with mealy or cottony secre- 

 tion PORPIIYROPHORA. 



Adult females with antennae of seven 

 joints ; covered with waxy or calcareous secre- 

 tion MARGARODES. 

 ( 



SUBDIVISION L ACANTHOCOCCIM]. 



Female insects exhibiting in all stages the anal tubercles. 

 Young larvae free, naked, active. Females of second stage 

 active, covered with thin cottony secretion. Adult females 

 stationary ; naked, or either resting on or covered with a thick 

 cottony or felted secretion. Anal tubercles in all stages con- 

 spicuous, bearing terminal hairs. Anogenital ring inconspicuous, 

 with fine short hairs. Body distinctly segmented. 



Male pupae enclosed in cottony or felted sac. Abdominal 

 spike of adult usually short, with a curved appendage. 



Genus : PLANCHONIA, Signoret, Ann. de la Soc. Entonu 



de France, 1868, p. 282. 

 Maskell, N.Z. Trans., Vol. XIV., 1881, p. 223. 



Adult females enclosed in a sac, or test, of secretion so 

 closely felted as to appear waxy ; round the edge of the sac a 

 double fringe of glassy tubes ; apodous ; antennae absent ; Anal 

 tubercles present in all stages. 



The differences between this genus and Asterolecanium (see 

 above under Lecanidinae) are not to be made out from external 

 examination of the sac, nor without close investigation. It is 

 possible, indeed, that Asterolecanium should be removed from the 

 Lecanidina and united with Planchonia. 



53. PLANCHONIA EPACRIDIS, Maskell. 



N.Z. Trans., Vol. XIV., 1881, p. 224. 



(Plate XII., Fig. 2.) 



Test of adult female closely felted, smooth, hard, semi- 

 transparent; flat beneath, convex above; elongated-oval, taper- 

 ing towards the posterior end ; completely enclosing the insect 

 except at extreme posterior end, where there is a small orifice - y 



