﻿Maskell, 
  — 
  On 
  some 
  Coccidaa 
  in 
  New 
  Zealand, 
  189 
  

  

  Srd. 
  The 
  males, 
  in 
  their 
  perfect 
  state, 
  are 
  absohitely 
  destitute 
  of 
  mouth 
  

   or 
  beak, 
  the 
  place 
  of 
  this 
  organ 
  being 
  apparently 
  taken 
  by 
  the 
  two 
  last 
  eyes 
  

   just 
  mentionod. 
  

  

  4th. 
  The 
  females 
  of 
  all 
  species 
  are 
  wingless. 
  

  

  5th. 
  The 
  mouth 
  of 
  the 
  female, 
  in 
  all 
  species, 
  consists 
  of 
  a 
  beak 
  or 
  

   rostrum, 
  usually 
  jointed, 
  from 
  which 
  start 
  long 
  tubular 
  setse 
  or 
  bristles, 
  

   apparently 
  retractile, 
  sometimes 
  longer 
  than 
  the 
  insect 
  itself. 
  Westwood, 
  

   and 
  after 
  him 
  Signoret, 
  says 
  that 
  there 
  are 
  four 
  of 
  these 
  setse. 
  This 
  is 
  

   certainly 
  the 
  case 
  in 
  some 
  species, 
  but 
  in 
  many 
  instances 
  I 
  have 
  been 
  

   unable, 
  though 
  carefully 
  w^atching, 
  to 
  see 
  more 
  than 
  three, 
  and 
  in 
  some 
  

   specimens 
  there 
  would 
  seem 
  to 
  be 
  no 
  doubt 
  on 
  the 
  matter. 
  

  

  The 
  above 
  characters 
  are 
  constant 
  in 
  all 
  the 
  species. 
  The 
  differences 
  

   observable 
  will 
  be 
  noticed 
  as 
  I 
  go 
  on. 
  

  

  I 
  may 
  say 
  here 
  that, 
  in 
  the 
  majority 
  of 
  instances, 
  the 
  males 
  are 
  

   extremely 
  rare 
  and 
  difficult 
  to 
  find 
  ; 
  in 
  fact, 
  for 
  some 
  species, 
  such 
  as 
  

   Mytilaspis 
  pomoriim 
  (the 
  common 
  apple 
  scale), 
  I 
  believe 
  that 
  the 
  male 
  insect 
  

   has 
  never 
  been 
  found. 
  

  

  The 
  whole 
  family 
  may 
  be 
  divided, 
  according 
  to 
  Signoret, 
  into 
  four 
  great 
  

   groups 
  : 
  — 
  

  

  1. 
  The 
  Diaspidae, 
  of 
  which 
  we 
  may 
  take 
  as 
  the 
  type 
  the 
  apple 
  scale, 
  

   Mytilaspis 
  pomoruvi. 
  

  

  2. 
  The 
  Brachyscelidse 
  : 
  these 
  appear 
  to 
  be 
  chiefly 
  Australian 
  species, 
  

   and 
  have 
  been 
  described 
  by 
  M. 
  Schrader, 
  in 
  the 
  Proceedings 
  of 
  the 
  

   Zoologico-Botanical 
  Society 
  of 
  Vienna 
  for 
  1868. 
  

  

  8. 
  The 
  Lecanidffi, 
  type 
  L. 
  hesperidum, 
  common 
  on 
  our 
  hollies. 
  

  

  4. 
  The 
  Coccidse 
  : 
  our 
  type 
  for 
  this 
  will 
  be 
  an 
  insect 
  found 
  on 
  the 
  

   Norfolk 
  Island 
  pine 
  and 
  on 
  native 
  trees 
  in 
  Eiccarton 
  Bush. 
  

  

  The 
  species 
  which 
  I 
  shall 
  have 
  to 
  describe 
  as 
  being, 
  in 
  my 
  opinion, 
  

   new, 
  will 
  not, 
  as 
  far 
  as 
  I 
  know 
  at 
  present, 
  requke 
  the 
  creation 
  of 
  a 
  new 
  

   group.''' 
  

  

  I 
  propose 
  to 
  take 
  the 
  above 
  groups 
  in 
  order, 
  and 
  for 
  the 
  present 
  shall 
  

   confine 
  myself 
  to 
  the 
  first. 
  I 
  shall 
  begin 
  by 
  giving 
  an 
  account 
  of 
  the 
  

   features 
  characteristic 
  of 
  the 
  whole 
  group 
  ; 
  then 
  pass 
  on 
  to 
  the 
  distinguish- 
  

   ing 
  featm-es 
  of 
  the 
  various 
  genera, 
  and 
  lastly 
  describe 
  the 
  species 
  which 
  I 
  

   have 
  observed. 
  

  

  1. 
  DiASPIDiE. 
  

  

  This 
  group 
  includes 
  those 
  scale 
  insects 
  which 
  cover 
  themselves 
  with 
  

   separate 
  shields, 
  composed 
  partly 
  of 
  the 
  discarded 
  pellicles 
  of 
  the 
  earlier 
  

   stages, 
  partly 
  of 
  a 
  fibrous 
  secretion 
  more 
  or 
  less 
  independent 
  of 
  the 
  body 
  of 
  

   the 
  insect. 
  

  

  * 
  Pou-ellia 
  (vide 
  post) 
  seems 
  to 
  belong 
  to 
  none 
  of 
  the 
  above 
  groups, 
  but 
  I 
  have 
  not 
  

   yet 
  been 
  able 
  to 
  make 
  out 
  where 
  to 
  place 
  it. 
  

  

  