﻿of 
  the 
  Genus 
  Cryptocerus. 
  217 
  

  

  5. 
  Cryptocerus 
  clypeaius. 
  (PI. 
  XXI. 
  fig. 
  1, 
  2, 
  5 
  & 
  6.) 
  

   Cryptocerus 
  clypeatus, 
  Fabr. 
  Syst. 
  Piez. 
  420, 
  3, 
  (worker) 
  ; 
  

   Perty, 
  Delec. 
  ; 
  Klug, 
  Entom. 
  Monog. 
  207, 
  6 
  ; 
  Guerin, 
  

   Icon. 
  R. 
  Anim. 
  426, 
  6. 
  

   Male. 
  — 
  Length 
  3| 
  lines. 
  Head 
  and 
  thorax 
  black, 
  rugose, 
  and 
  

   having 
  on 
  the 
  disc 
  of 
  the 
  thorax 
  a 
  thinly 
  scattered 
  fulvous 
  pubes- 
  

   ence 
  ; 
  antennae 
  and 
  legs 
  pale 
  ferruginous; 
  wings 
  sub-hyaline, 
  

   nervures 
  pale 
  testaceous, 
  stigma 
  ferruginous 
  ; 
  a 
  dark 
  cloud 
  com- 
  

   mences 
  just 
  within 
  the 
  first 
  sub-marginal 
  cell, 
  occupies 
  the 
  mar- 
  

   ginal 
  one, 
  and 
  passes 
  along 
  the 
  anterior 
  margin 
  to 
  the 
  apex 
  of 
  the 
  

   wing. 
  Abdomen 
  ferrugineo-testaceous, 
  highly 
  polished, 
  the 
  first 
  

   node 
  black, 
  the 
  second 
  stained 
  at 
  the 
  sides. 
  

  

  Female. 
  — 
  Length 
  6 
  lines. 
  Entirely 
  of 
  a 
  reddish-yellow, 
  smooth 
  

   and 
  shining 
  ; 
  the 
  flagellum 
  of 
  the 
  antennae 
  fuscous 
  ; 
  the 
  lateral 
  

   margins 
  of 
  the 
  head 
  raised, 
  at 
  the 
  posterior 
  angles 
  a 
  short 
  acute 
  

   spine, 
  another 
  acute 
  spine 
  immediately 
  behind 
  each 
  posterior 
  

   stemma 
  ; 
  the 
  anterior 
  angles 
  of 
  the 
  thorax 
  acute 
  ; 
  the 
  lateral 
  

   angles 
  of 
  the 
  metathorax 
  produced 
  into 
  stout 
  obtuse 
  spines, 
  

   disc 
  of 
  the 
  thorax 
  somewhat 
  flattened. 
  Wings 
  sub-hyaline, 
  the 
  

   nervures 
  at 
  the 
  base 
  of 
  the 
  wings 
  pale, 
  darker 
  towards 
  their 
  

   apex 
  ; 
  a 
  dark 
  cloud 
  occupies 
  the 
  marginal 
  cell 
  and 
  passes 
  off 
  

   along 
  the 
  anterior 
  margin 
  of 
  the 
  wing 
  to 
  the 
  apex 
  ; 
  the 
  nervures 
  

   of 
  the 
  wings 
  have 
  a 
  narrow 
  cloud 
  running 
  their 
  entire 
  length. 
  

   Abdomen 
  elongate, 
  flattened 
  above, 
  having 
  at 
  the 
  basal 
  and 
  apical 
  

   angles 
  an 
  ovate 
  yellow 
  macula, 
  surrounded 
  by 
  a 
  fuscous 
  ring. 
  

   Hab. 
  Brazil 
  (Santarem). 
  H. 
  W. 
  Bates, 
  Esq. 
  

   In 
  the 
  British 
  Museum, 
  and 
  other 
  Collections. 
  

  

  6. 
  Cryptocerus 
  memhranaceus. 
  

   Reddish-brown, 
  punctured 
  ; 
  head 
  and 
  thorax 
  spinose, 
  the 
  abdo- 
  

   men 
  having 
  a 
  pale 
  membranaceous 
  margin. 
  

  

  Cryptocerus 
  memhranaceus, 
  Klug, 
  Ent. 
  Monog. 
  ; 
  Guerin, 
  Icon. 
  

  

  R. 
  Anim. 
  426. 
  (Worker.) 
  

   Length 
  3 
  lines. 
  

   Hab. 
  Brazil. 
  

  

  7. 
  Cryptocerus 
  quadrigiittatus. 
  

   Reddish-brown 
  : 
  abdomen 
  ovate, 
  and 
  having 
  four 
  large 
  yellow 
  

  

  spots, 
  and 
  between 
  the 
  pairs 
  a 
  transverse 
  black 
  band. 
  

  

  Cryptocerus 
  4:-guttatus, 
  Guer. 
  Icon. 
  R. 
  Anim. 
  425. 
  (Worker.) 
  

  

  Length 
  3| 
  lines. 
  

  

  Hab. 
  Columbia 
  ; 
  Bolivia 
  ; 
  Amazons, 
  Brazil. 
  

  

  