﻿of 
  the 
  Genus 
  Cryptoceriis. 
  215 
  

  

  Sexes 
  three 
  ; 
  female 
  and 
  worker 
  furnished 
  with 
  a 
  sting, 
  sides 
  

   of 
  the 
  head 
  expanded, 
  partly 
  concealing 
  the 
  eyes, 
  having 
  on 
  each 
  

   side 
  beneath 
  the 
  produced 
  margin 
  a 
  longitudinal 
  channel 
  before 
  

   the 
  eyes 
  ; 
  antennae 
  stout, 
  clavate, 
  reposing 
  in 
  the 
  lateral 
  channel 
  ; 
  

   scape 
  of 
  the 
  antennae 
  grooved 
  beneath 
  for 
  the 
  reception 
  of 
  the 
  

   basal 
  joints 
  of 
  the 
  flagellum 
  ; 
  labrum 
  transverse, 
  its 
  anterior 
  

   margin 
  deeply 
  notched 
  ; 
  labial 
  palpi 
  3-jointed, 
  each 
  of 
  about 
  

   equal 
  length 
  ; 
  maxillary 
  palpi 
  5-jointed, 
  the 
  first 
  joint 
  short, 
  sub- 
  

   globose, 
  the 
  second 
  about 
  the 
  length 
  of 
  the 
  two 
  following, 
  the 
  

   apical 
  joint 
  the 
  same 
  length 
  as 
  the 
  third 
  and 
  fourth 
  ; 
  maxillary 
  

   apical 
  lobe 
  somewhat 
  rounded, 
  slightly 
  produced 
  and 
  pointed 
  at 
  

   the 
  apex 
  ; 
  superior 
  wings 
  having 
  one 
  marginal 
  and 
  two 
  sub-mar- 
  

   ginal 
  cells 
  ; 
  and 
  one 
  small 
  discoidal 
  cell, 
  sub-quadrate 
  and 
  narrowed 
  

   towards 
  the 
  submarginal. 
  Abdomen 
  elongate 
  in 
  the 
  females 
  ; 
  

   ovate, 
  or 
  globose 
  in 
  the 
  workers. 
  

  

  Males 
  elongate, 
  slender; 
  the 
  head 
  not 
  prod\iced 
  at 
  the 
  sides; 
  

   ocelli 
  prominent 
  (smaller 
  in 
  the 
  females 
  and 
  wanting 
  in 
  the 
  

   workers); 
  wings 
  ample, 
  neuration 
  as 
  in 
  the 
  females; 
  legs 
  elongate 
  ; 
  

   abdomen 
  small, 
  attached 
  to 
  the 
  thorax 
  by 
  two 
  basal 
  nodes. 
  

  

  Obs. 
  — 
  Latrielle 
  in 
  his 
  Gen. 
  Crust, 
  et 
  Ins. 
  iv. 
  p. 
  132, 
  says 
  the 
  

   labial 
  palpi 
  consist 
  of 
  four 
  joints, 
  I 
  have 
  examined 
  both 
  labial 
  and 
  

   maxillary 
  palpi 
  of 
  females 
  and 
  workers 
  of 
  C. 
  atratus, 
  under 
  a 
  

   powerful 
  microscope, 
  and 
  can 
  only 
  detect 
  three 
  labial 
  and 
  five 
  

   maxillary 
  joints 
  in 
  the 
  palpi. 
  Fabricius, 
  Syst. 
  Piez., 
  p. 
  419, 
  gives 
  

   labial 
  palpi 
  4-jointed, 
  maxillary 
  palpi 
  6-jointed. 
  

  

  1. 
  Cryptocerus 
  atratus. 
  (PI. 
  XIX. 
  figs. 
  1, 
  2.) 
  

   Formica 
  atratus, 
  Linn. 
  Syst. 
  Nat. 
  i. 
  965, 
  16 
  ; 
  Fab. 
  Syst. 
  Ent. 
  395, 
  

  

  24; 
  Spec. 
  Ins. 
  i. 
  493, 
  33 
  ; 
  Mantis. 
  Ins. 
  i. 
  

  

  310, 
  40; 
  Ent. 
  Syst. 
  ii. 
  363, 
  54; 
  OHv. 
  

  

  Encycl. 
  Meth. 
  vi. 
  609 
  ; 
  Latr. 
  Hist. 
  Nat. 
  

  

  Fourm. 
  272, 
  tab. 
  xii. 
  fig. 
  74 
  a. 
  

  

  Formica 
  quadridens, 
  De 
  Geer, 
  Ins. 
  iii. 
  609, 
  7, 
  tab.Sl, 
  fig. 
  17 
  — 
  20. 
  

  

  Cryptocerus 
  marginatus, 
  Fabr. 
  Syst. 
  Piez. 
  419, 
  2, 
  $. 
  

  

  atratus, 
  Latr. 
  Hist. 
  Nat. 
  xiii. 
  260, 
  tab. 
  cii. 
  fig. 
  1 
  ; 
  

  

  Fabr. 
  Syst. 
  Piez. 
  418, 
  1 
  5 
  Klug, 
  Entom. 
  

  

  Monog. 
  200, 
  1 
  ; 
  St. 
  Farg. 
  Hym. 
  i. 
  170, 
  1 
  ; 
  

  

  Guerin, 
  Icon. 
  R. 
  Anim. 
  424, 
  tab. 
  69, 
  fig. 
  3 
  ; 
  

  

  Spin. 
  Mem. 
  Acad. 
  Torino. 
  (Ser. 
  Sec.) 
  

  

  Tom. 
  xii. 
  I. 
  Q3. 
  

   Hab. 
  Brazil 
  ; 
  Cayenne 
  ; 
  Surinam. 
  

  

  