128 



Transactions. — Zooloyy. 



L/ECANIEiE. 



Lecanium. 



Lecanopsis. 



Aclerda. 

 Pulvinaria. 



Lecanio-cocoidje. 



Siynoretia. 



Lecaniodiaspis. 

 Philippia. 



Lichtensia. 



Eriopeltis. 



Subsection II. 



Insects naked 



Insects propagating without ovisac, arboreal ... 



Insects propagating without ovisac, subterranean, re- 

 taining feet and antennae ... 



Insects propagating without ovisac, subterranean, losing 

 feet and antennae ... 



Insects forming ovisac ... 



Subsection III. 



Insects covering themselves with a secretion of cottony 

 or felted matter 



Secretion felted, appearing only in the last stage, after 

 gestation 



Secretion felted, forming a nearly complete sac, before 

 gestation 



Secretion felted, forming complete sac 



Secretion cottony, covering the insect only in its last 

 stage, after gestation 



Secretion cottony, forming complete sac, before ges- 

 tation 

 The series thus presented would contain all the Lecanidae proper. 



Between it and the Coccidae proper would come a small group, combining 



the characters of the two, and linking them together, thus : — 



3rd Group. 



Insects presenting at one stage the anal tubercles of 



Coccidae, at another the cleft and lobes of Lecanidae HEMI-COCCIDiE. 



Subsection I. 



Insects naked 



Insects globular .. . 



Subsection II. 



Insects covering themselves with a secretion of glassy 

 or waxy matter 



Test hard, waxy, with single fringe 



Test hard, waxy, with double fringe ... 



In the foregoing series I have omitted the genus Physokermes, Targioni, 



not being able to make out exactly its distinction from Lecanium ; also the 



genus Planclionia, because, as stated in my paper of 1881 (Trans., vol. xiv., 



p. 223), it has the anal tubercles of Coccidae in all stages. In the case of 



many of the genera given above, as for instance Pollinia and Aster olecanium, 



or Lecanopsis and Aclerda, I do not know whether the distinctions given by 



authors are sufficient : but I have not seen all these insects. 



KeRMITIDjE. 



Kermes. 



Crypto -KERMiTiDiE . 



Pollinia. 



Asterolecanium. 



