134 Transactions . — ZooU igy . 



is much smaller, averaging only -^ inch in length. I do not quite see, 

 also, why L. hesperidum, which is free from fungus in our gardens, should 

 be so subject to it in the forests ; indeed, almost exclusively so', for few 

 other insects suffer in the same way. Fiorinia astelim, is sometimes found 

 in the same state, and I have specimens of an Aleurodes from Pelorus 

 Sound also attacked by fungus ; but this little Lecanium seems to be the 

 chief victim. 



Subsection III. — LECANio-cocciDiE. 

 The species forming this subsection are all European, and I have not 

 seen any in New Zealand. 



3rd Group.— HEMI-COCCID^E. 

 I have not seen a true Kermes in New Zealand, but have received from 

 South Australia an insect of this genus which deserves full examination. 



The genus Asterolecanium, which I have placed under this group in my 

 foregoing list of genera, is to the naked eye similar to Planchonia, and it 

 requires an examination of the abdominal region in all stages to detect the 

 difference. But M. Signoret distinctly states that the adult Asterolecanium 

 has the abdomen of the Lecanidse. 



4th Group.— COCCID^. 

 Characterized by the absence in all stages of the deep abdominal « 

 cleft, and by the prolongation of the abdomen into lateral processes, more 

 or less conspicuous, which I have called in these papers " anal tubercles." 

 In some genera, as Dactylopms, these tubercles are scarcely noticeable, but 

 may usually be made out on close examination (see Trans., vol. xi., pi. viii., 

 figs. 19 d and 19 g). In others, as Icerya, there is so much secretion and 

 hair on the abdomen of the adult that the tubercles can scarcely be 

 detected. But in no case, I think, can any of the species be mistaken for 

 Lecanidse. 



As for the mentum, it is usually tri-merous ; but this character is varia- 

 able, and also most difficult to make out. 



Genus Planchonia, Signoret. 

 1. Planchonia epacridis, mihi. 

 (Trans., vol. xiv., p. 224.) 

 I think this species may stand. As remarked above, it outwardly 

 resembles Asterolecanium. 



Genus Eriococcus, Targioni. 



Eriococcus araucarice, mihi. 



(Trans., vol. xi., p. 218.) 



This appears to be certainly distinct. M. Signoret informs me that he 



has lately received some specimens from Spain. Mr. Comstock reports it 



also from the United States, but refers it to the next genus Rhizococcus, 



