﻿318 
  EEPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  thorax 
  and 
  met-entothorax 
  are 
  conspicuous 
  and 
  situated 
  between 
  the 
  

   second 
  and 
  third 
  pair 
  of 
  legs. 
  

  

  Conocephalus. 
  In 
  the 
  head 
  of 
  this 
  genus 
  the 
  entire 
  epicranium 
  is 
  pro- 
  

   duced 
  tergally 
  into 
  a 
  long 
  cone, 
  with 
  no 
  suture 
  above. 
  Beneath, 
  there 
  is 
  

   a 
  deep 
  inter-antennal 
  fossa 
  dividing 
  the 
  cone 
  from 
  the 
  face, 
  which 
  is 
  

   longer 
  than 
  broad. 
  There 
  are 
  no 
  ocelli. 
  There 
  is 
  no 
  suture 
  between 
  

   the 
  clypeus 
  and 
  epicranium, 
  except 
  on 
  the 
  sides. 
  

  

  Family 
  LOOUSTAEIJE. 
  

  

  THE 
  HEAD. 
  

  

  Anabrus. 
  (PI. 
  XXV-XXYI). 
  The 
  epicranium 
  is 
  very 
  large, 
  and 
  di- 
  

   vided 
  into 
  two 
  portions, 
  post- 
  and 
  ante-antennal, 
  which 
  are 
  separated 
  by 
  

   a 
  short 
  interantennal 
  suture. 
  The 
  front 
  of 
  the 
  head 
  is 
  very 
  broad, 
  and 
  

   the 
  eyes 
  are 
  small. 
  There 
  is 
  an 
  occipital 
  ridge 
  on 
  the 
  hinder 
  edge, 
  

   separating 
  the 
  genae 
  from 
  the 
  ocular 
  region. 
  The 
  clypeus 
  is 
  trapezoidal, 
  

   about 
  one-half 
  as 
  long 
  as 
  wide, 
  with 
  an 
  accessory, 
  rounded, 
  anterior 
  ex- 
  

   pansion 
  on 
  the 
  base 
  of 
  the 
  labrum; 
  the 
  latter 
  rounded, 
  as 
  long 
  as 
  broad. 
  

   The 
  gense 
  are 
  broad 
  and 
  flat 
  5 
  the 
  gula 
  moderately 
  broad. 
  

  

  THE 
  THORAX. 
  O 
  

  

  The 
  pronotum 
  (PI. 
  XXYIII) 
  is 
  very 
  large, 
  extending 
  down 
  to 
  the 
  in- 
  

   sertion 
  of 
  the 
  fore 
  legs 
  and 
  backward 
  to 
  the 
  base 
  of 
  the 
  abdomen. 
  

  

  Mesonotum. 
  (PL 
  XXX.) 
  The 
  scutum 
  and 
  scutellum 
  are 
  only 
  partially 
  

   differentiated, 
  the 
  scutal 
  area 
  being 
  represented 
  by 
  two 
  lateral, 
  flattened, 
  

   slightly-marked 
  bosses 
  on 
  each 
  side 
  of 
  the 
  segment 
  in 
  front, 
  and 
  not 
  

   separated 
  by 
  suture 
  from 
  the 
  scutellum, 
  whose 
  apex 
  is 
  distinct 
  and 
  acute. 
  

   There 
  is 
  no 
  pfsescutum 
  or 
  postscutellum. 
  

  

  The 
  metanotum 
  (PI. 
  XXX) 
  repeats 
  the 
  general 
  features 
  of 
  the 
  meso- 
  

   notum, 
  but 
  the 
  segment 
  is 
  a 
  little 
  shorter, 
  the 
  scutal 
  bosses 
  smaller, 
  while 
  

   the 
  scutellum 
  is 
  i'ndicated 
  by 
  a 
  circular, 
  flattened 
  eminence, 
  with 
  no 
  ai)ex 
  

   behind. 
  The 
  postscutellum 
  is 
  not 
  indicated. 
  

  

  Fleurum, 
  

  

  The 
  propleurifes 
  (PI. 
  XXIX) 
  are 
  small 
  and 
  short. 
  There 
  are 
  two 
  epi- 
  

   sternal 
  sclerites, 
  an 
  upper 
  and 
  lower, 
  of 
  irregular 
  form. 
  The 
  epimerum 
  

   js 
  undivided; 
  it 
  is 
  no 
  longer 
  than 
  broad, 
  andl)elow 
  laterally 
  flares 
  out- 
  

   ward, 
  forming 
  a 
  horizontally-projecting 
  scale. 
  The 
  prostigmata 
  are 
  very 
  

   large, 
  and 
  the 
  edges 
  are 
  armed 
  within 
  by 
  thick-set 
  spines. 
  

  

  The 
  mesopleurites 
  and 
  metapleurites 
  are 
  much 
  alike 
  and 
  peculiar 
  in 
  

   form, 
  being 
  large 
  and 
  high, 
  owing 
  to 
  the 
  small 
  wings. 
  The 
  episternum 
  

   is 
  long 
  and 
  narrow, 
  and 
  vertical 
  in 
  position 
  ; 
  it 
  is 
  undivided, 
  and 
  a 
  little 
  

   narrower 
  above 
  than 
  near 
  the 
  sternum, 
  the 
  middle 
  being 
  produced 
  into 
  

   a 
  sharp 
  ridge. 
  The 
  epimerum 
  is 
  as 
  in 
  the 
  episternum, 
  but 
  flatter 
  and 
  

   only 
  ridged 
  near 
  the 
  sternum. 
  

  

  The 
  metapleurites 
  are 
  more 
  oblique 
  than 
  the 
  mesopleurites, 
  and 
  are 
  

  

  