﻿of 
  the 
  Coleopterous 
  Genvs 
  Megacephala. 
  51 
  

  

  metallic 
  coloured 
  group 
  one 
  species 
  (the 
  beautiful 
  71/. 
  Spixii) 
  I 
  

   found 
  rather 
  abundantly 
  at 
  Villa 
  Nova, 
  on 
  the 
  light 
  earthy 
  or 
  

   sandy 
  margins 
  of 
  the 
  river, 
  where 
  the 
  fluctuating 
  level 
  of 
  the 
  

   waters 
  leaves 
  a 
  succession 
  of 
  terraces. 
  By 
  cutting 
  away 
  the 
  edges 
  

   of 
  these 
  terraces 
  I 
  was 
  able 
  to 
  get 
  at 
  their 
  burrows 
  readily, 
  and 
  

   took 
  as 
  many 
  as 
  I 
  wanted. 
  Another 
  copper-coloured, 
  very 
  hand- 
  

   some 
  species, 
  more 
  robust 
  in 
  form 
  (71/. 
  curta, 
  Reiche), 
  is 
  found 
  at 
  

   the 
  moist 
  edges 
  of 
  the 
  water, 
  under 
  stones 
  and 
  sediment. 
  Of 
  one 
  

   fine 
  green 
  species 
  (A/, 
  sjrinosa 
  ?), 
  distinguished 
  by 
  a 
  small 
  tooth 
  

   at 
  the 
  sutural 
  angle 
  of 
  the 
  apex 
  of 
  the 
  elytra, 
  I, 
  at 
  present, 
  have 
  

   only 
  a 
  single 
  specimen 
  from 
  the 
  extensive 
  sandy 
  campos 
  of 
  Santa- 
  

   rcm. 
  The 
  fourth 
  species, 
  which 
  is 
  elongated 
  in 
  form, 
  of 
  a 
  fine 
  uni- 
  

   form 
  blue 
  or 
  blue 
  green 
  colour 
  (71/. 
  Martii), 
  I 
  have 
  found 
  also 
  at 
  

   Santarem, 
  very 
  circumscribed 
  in 
  its 
  localities 
  ; 
  it 
  prefers 
  dry 
  gra- 
  

   velly 
  situations, 
  and 
  is 
  only 
  seen 
  after 
  sunset. 
  The 
  fifth 
  and 
  last 
  

   species 
  is 
  the 
  smallest 
  of 
  tlie 
  metallic 
  group, 
  having 
  the 
  elytra 
  

   much 
  narrowed 
  towards 
  the 
  apex 
  (71/. 
  quadricollis, 
  Laf.). 
  I 
  have 
  

   met 
  with 
  it 
  only 
  at 
  Ega, 
  in 
  company 
  with 
  M. 
  testitdinea 
  and 
  two 
  

   other 
  pale 
  species. 
  H. 
  W. 
  B. 
  

  

  List 
  of 
  the 
  Species 
  mentioned 
  in 
  the 
  jireceding 
  Memoir. 
  

   A. 
  Black 
  species 
  {Aninra, 
  Hope). 
  

   Sp. 
  1. 
  Megacephala 
  sepulchralis, 
  Fabricius, 
  Syst. 
  Eleuth. 
  p. 
  233, 
  

   n. 
  9 
  (Cicindelas), 
  Dej. 
  Sp. 
  Gen. 
  v. 
  199, 
  n. 
  7. 
  

   Meg. 
  variolosa, 
  Dej. 
  Sp, 
  Gen. 
  i. 
  14, 
  n. 
  7. 
  

  

  B. 
  Pale 
  coloured 
  species. 
  (Ammosia, 
  Westw.) 
  

  

  Sp. 
  2. 
  Megacephala 
  testudinea, 
  Klug, 
  Jahrbucher 
  D. 
  Ins. 
  p. 
  6, 
  

  

  pi. 
  l,f 
  2. 
  

  

  M. 
  Klugii, 
  Moritz, 
  MS. 
  

  

  Mr. 
  Bates' 
  specimens 
  of 
  this 
  species 
  are 
  chestnut 
  red 
  on 
  the 
  upper 
  

  

  side, 
  without 
  any 
  gloss, 
  and 
  with 
  paler 
  lateral 
  margins 
  andluteous 
  

  

  butF 
  beneath. 
  The 
  head 
  is 
  smooth 
  above, 
  except 
  between 
  the 
  

  

  eyes, 
  where 
  it 
  is 
  finely 
  striolated, 
  the 
  striolee 
  of 
  the 
  disc 
  being 
  

  

  almost 
  obsolete, 
  the 
  inner 
  margin 
  of 
  the 
  eyes 
  black. 
  The 
  labrum 
  

  

  is 
  transverse, 
  pale 
  luteous, 
  the 
  lateral 
  angles 
  rather 
  porrected 
  and 
  

  

  rounded, 
  the 
  centre 
  porrected 
  and 
  armed 
  with 
  two 
  obtuse 
  black 
  

  

  teeth 
  ; 
  half-way 
  between 
  the 
  produced 
  middle 
  and 
  the 
  lateral 
  

  

  angles 
  is 
  another 
  small 
  tooth 
  on 
  each 
  side 
  ; 
  the 
  mandibles 
  are 
  pale 
  

  

  luteous, 
  with 
  black 
  teeth, 
  the 
  right 
  one 
  in 
  the 
  male 
  having 
  the 
  

  

  second 
  tooth 
  from 
  the 
  tip 
  very 
  minute, 
  and 
  the 
  third 
  oblique 
  

  

  emarginate 
  at 
  its 
  tip, 
  whilst 
  in 
  the 
  female 
  it 
  has 
  three 
  large 
  terminal 
  

  

  