SCALE-INSECTS. 63 



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SUBDIVISION II. 



Female insects naked LECANID^. 



Females propagating without ovisac, ar- 

 boreal LECANIUM. 

 Females constructing ovisac, arboreal PULVINABIA. 



Not yet represented in New Zealand. 



Females propagating without ovisao, sub- 

 terranean, retaining feet and antennae LECANOPSIS. 



Females propagating without ovisac, sub- 

 terranean, losing feet and antennae ACLERDA. 



NOTE. The genus Physokermes, Targioni-Tozzetti, is placed 

 by Signoret (loc. cit., 1874, p. 87) amongst those which here 

 form this subdivision ; but there seems to be no sufficient dis- 

 tinction between it and Lecanium. 



SUBDIVISION III. 



Insects covering themselves with secretion 

 of cottony or felted matter LECANO-CoCCIEXE. 



Secretion felted, scarcely apparent on 

 adult female, conspicuous on male pupae and 

 female of early stages; edge fringed ERIOCHITON. 



Not yet represented in Neiv Zealand. 



Secretion felted', appearing only in the last 

 stage, after gestation SIGNORETIA. 



Secretion felted, forming a nearly com- 

 plete sac on adult female before gestation LECANODIASPIS. 



Secretion felted, forming complete sac on 

 adult female PHILIPPIA. 



Secretion cottony, covering adult female 

 only after gestation LICHTENSIA. 



Secretion cottony, forming a complete sac 

 011 adult female before gestation ERIOPELTIS. 



SUBDIVISION I. LECANODIASPID^E, Targioni-Tozzetti. 



Female insects exhibiting in all stages the abdominal cleft 

 and lobes. Larvae free, naked, active. Females after the first 

 metamorphosis constructing over themselves a carapace, shield, 



