﻿196 
  Transactions, 
  — 
  Zoology, 
  

  

  The 
  abdomen 
  exhibits 
  a 
  curve 
  almost 
  continuous 
  and 
  regular, 
  broken 
  

   only 
  by 
  very 
  small 
  lobes 
  except 
  in 
  the 
  middle, 
  where 
  there 
  is 
  a 
  deepish 
  

   depression 
  with 
  a 
  large 
  lobe 
  on 
  each 
  side. 
  Between 
  the 
  lobes 
  are 
  scaly 
  

   serrated 
  hairs, 
  some 
  of 
  which 
  are 
  pretty 
  long. 
  

  

  There 
  are 
  five 
  groups 
  of 
  spinnerets 
  of 
  which 
  the 
  middle 
  has 
  7 
  to 
  8 
  

   openings, 
  the 
  two 
  upper-side 
  ones 
  14 
  to 
  20, 
  the 
  two 
  lower 
  20 
  to 
  25. 
  

  

  There 
  are 
  a 
  great 
  number 
  of 
  single 
  spinnerets, 
  a 
  few 
  oval 
  or 
  circular, 
  

   the 
  majority 
  oblong. 
  They 
  are 
  placed 
  in 
  curved 
  lines 
  arching 
  round 
  the 
  

   pygidium, 
  each 
  arch 
  lining 
  the 
  groove 
  of 
  a 
  corrugation, 
  and 
  are 
  visible 
  on 
  

   the 
  sides 
  of 
  the 
  body 
  nearly 
  to 
  a 
  level 
  with 
  the 
  rostrum. 
  

  

  The 
  male 
  insect 
  is 
  very 
  minute 
  and 
  difficult 
  to 
  find. 
  I 
  su.cceeded 
  in 
  

   procuring 
  one 
  specimen, 
  though 
  not 
  in 
  good 
  order. 
  I 
  could 
  observe 
  that 
  

   the 
  antennae 
  were 
  short 
  and 
  the 
  tibiae 
  excessively 
  large. 
  

  

  Plate 
  v., 
  fig. 
  4a, 
  is 
  the 
  puparium 
  ; 
  fig. 
  4i, 
  the 
  adult 
  female 
  ; 
  fig. 
  4c, 
  the 
  

   pygidium. 
  

  

  4. 
  Mytilaspis 
  drimydis, 
  sp. 
  nov. 
  

  

  Plate 
  v., 
  fig. 
  5. 
  

  

  I 
  have 
  found 
  this 
  species 
  on 
  a 
  great 
  many 
  native 
  plants, 
  but 
  more 
  often 
  

   perhaps 
  on 
  Drimys 
  colorata, 
  whence 
  I 
  give 
  it 
  its 
  name. 
  

  

  The 
  puparium 
  is 
  straight, 
  long 
  and 
  narrow, 
  but 
  not 
  so 
  much 
  so 
  as 
  in 
  

   M. 
  cordylinidis. 
  Average 
  length 
  -^L 
  inch 
  ; 
  breadth 
  -^ 
  inch 
  ; 
  colour 
  generally 
  

   a 
  dirty 
  white, 
  sometimes 
  brown, 
  yellow 
  at 
  the 
  end 
  with 
  the 
  discarded 
  

   pellicles, 
  which 
  are 
  oval, 
  narrowing 
  somewhat 
  at 
  the 
  tip. 
  

  

  The 
  adult 
  female 
  is 
  of 
  a 
  dull 
  red 
  colour, 
  about 
  twice 
  as 
  long 
  as 
  broad 
  ; 
  

   the 
  widest 
  part 
  is 
  about 
  two-thirds 
  of 
  the 
  length 
  from 
  the 
  head. 
  It 
  is 
  less 
  

   corrugated 
  than 
  M. 
  pomorum 
  ; 
  the 
  head 
  and 
  thoracic 
  portion 
  of 
  the 
  body 
  

   axe 
  smooth 
  and 
  round, 
  the 
  anterior 
  edge 
  not 
  so 
  much 
  flattened 
  as 
  in 
  M. 
  

   cordylinidis. 
  The 
  remainder 
  of 
  the 
  body, 
  on 
  the 
  corrugations, 
  has 
  a 
  row 
  

   of 
  short, 
  thick, 
  tubular 
  bristles 
  extending 
  down 
  the 
  edge 
  as 
  far 
  as 
  the 
  com- 
  

   mencement 
  of 
  the 
  abdominal 
  pygidium 
  ; 
  these 
  are 
  cjdindrical, 
  some 
  with 
  a 
  

   circular 
  top, 
  some 
  forked, 
  some 
  appearing 
  like 
  bundles 
  of 
  parallel 
  fibres. 
  It 
  

   is 
  probable 
  that 
  they 
  are 
  sj)innerets 
  protruding 
  further 
  than 
  is 
  usual 
  in 
  

   other 
  species. 
  

  

  There 
  are 
  no 
  groups 
  of 
  spinnerets 
  on 
  the 
  abdomen, 
  but 
  a 
  number 
  of 
  

   single 
  ones, 
  mostly 
  oblong, 
  scattered 
  about. 
  

  

  The 
  abdomen 
  ends 
  in 
  a 
  number 
  of 
  very 
  small 
  lobes 
  of 
  which 
  four 
  are 
  

   conspicuous 
  in 
  the 
  centre. 
  Between 
  the 
  lobes 
  fine 
  hairs. 
  

  

  On 
  the 
  cephalic 
  region 
  are 
  a 
  few 
  scattered 
  spines 
  and 
  the 
  two 
  rudimentary 
  

   antennae. 
  

  

  I 
  have 
  no 
  adult 
  male, 
  but 
  pupae 
  showing 
  long 
  antennfe, 
  a 
  very 
  long 
  

   body, 
  short 
  wings 
  and 
  the 
  usual 
  abdominal 
  spike 
  peculiar 
  to 
  the 
  Diaspid®. 
  

  

  