﻿ORTHOPTERA. 
  315 
  

  

  not 
  SO 
  far 
  down 
  as 
  usual 
  in 
  the 
  other 
  Orthopterous 
  families, 
  though 
  in 
  

   Tettix 
  it 
  does 
  extend 
  down 
  much 
  farther 
  than 
  in 
  Oaloptenus. 
  The 
  

   clypeus 
  is 
  well 
  marked, 
  one-third 
  as 
  long 
  as 
  broad. 
  The 
  gense 
  are 
  not 
  

   very 
  broad 
  j 
  the 
  gula 
  is 
  short 
  and 
  broad. 
  

  

  THE 
  THORAX. 
  

  

  JSfotum. 
  

  

  The 
  pronotum 
  (PI. 
  XXVIII) 
  is 
  very 
  large, 
  extending 
  to 
  the 
  hinder 
  

   edge 
  of 
  the 
  mesonotum, 
  and 
  down 
  on 
  the 
  sides 
  as 
  far 
  as 
  the 
  insertion 
  of 
  

   the 
  legs. 
  

  

  The 
  mesonotum. 
  (PI. 
  XXX.) 
  This 
  and 
  the 
  metanotum, 
  except 
  in 
  the 
  

   absence 
  of 
  the 
  prgescutum, 
  closely 
  resemble 
  the 
  same 
  parts 
  in 
  the 
  Per- 
  

   lidae. 
  The 
  scutum 
  is 
  short 
  and 
  broad, 
  excavated 
  in 
  froDt, 
  one-half 
  as 
  

   long 
  in 
  the 
  middle 
  as 
  on 
  the 
  sides, 
  each 
  side 
  swollen 
  in 
  the 
  middle 
  area, 
  

   the 
  hind 
  edge 
  deeply 
  excavated 
  to 
  receive 
  the 
  scutellum, 
  which 
  is 
  

   shorter 
  than 
  wide, 
  obtuse, 
  rounded 
  in 
  front, 
  and 
  behind 
  is 
  a 
  little 
  more 
  

   pointed. 
  The 
  postscutellum 
  is 
  represented 
  by 
  a 
  narrow, 
  transverse 
  ridge 
  

   expanding 
  on 
  the 
  sides. 
  

  

  The 
  metanotum 
  (PI. 
  XXX) 
  is 
  as 
  the 
  mesonotum, 
  but 
  a 
  little 
  longer, 
  as 
  

   the 
  hind 
  wings 
  are 
  larger 
  than 
  the 
  fore 
  pair. 
  The 
  scutellum, 
  with 
  the 
  

   sutures 
  separating 
  it 
  in 
  front 
  from 
  the 
  scutum, 
  is 
  more 
  distinct; 
  the 
  scu- 
  

   tum 
  is 
  a 
  little 
  longer 
  on 
  the 
  median 
  line 
  j 
  the 
  scutellum 
  is 
  rather 
  more 
  

   acute, 
  triangular 
  in 
  front, 
  and 
  longer 
  and 
  larger 
  than 
  the 
  mesoscutel- 
  

   lum. 
  The 
  postscutellum 
  is 
  represented 
  by 
  a 
  simple 
  ridge 
  as 
  in 
  the 
  

   mesothorax. 
  

  

  Pleurum, 
  

  

  The 
  propleurum, 
  (PL 
  XXIX.) 
  The 
  episternum 
  is 
  rudimentary, 
  

   minute, 
  shorter 
  than 
  broad, 
  and 
  triangular. 
  The 
  epimerum 
  is 
  almost 
  

   obsolete, 
  being 
  represented 
  by 
  a 
  short, 
  ridge-like 
  sclerite. 
  The 
  tro- 
  

   chantine 
  is 
  rudimentary, 
  minute, 
  with 
  a 
  large 
  spine. 
  The 
  coxa 
  is 
  a 
  little 
  

   larger 
  and 
  more 
  swollen 
  sclerite 
  than 
  the 
  trochantine, 
  and 
  is 
  full 
  be- 
  

   hind.^^2 
  

  

  The 
  mesopleurum. 
  (PI. 
  XXXI.) 
  The 
  episternum 
  is 
  entire, 
  very 
  large 
  

   and 
  full, 
  narrowing 
  towards 
  the 
  insertion 
  of 
  the 
  wings, 
  and 
  extending 
  

   below 
  to 
  beneath 
  the 
  insertion 
  of 
  the 
  legs. 
  The 
  epimerum 
  is 
  of 
  even 
  

   width, 
  being 
  quite 
  regularly 
  oblong, 
  and 
  only 
  extending 
  to 
  the 
  insertion 
  

   of 
  the 
  legs 
  above. 
  The 
  meta-spiracle 
  is 
  situated 
  on 
  the 
  posterior, 
  lower 
  

   angle 
  of 
  the 
  epimerum, 
  while 
  the 
  meso-spiracle 
  is 
  placed 
  on 
  the 
  anterior 
  

   and 
  upper 
  edge 
  of 
  the 
  episternum. 
  The 
  trochantine 
  and 
  coxa 
  are 
  much 
  

   as 
  in 
  the 
  fore 
  legs. 
  

  

  The 
  meiapleurum. 
  (PI. 
  XXXI). 
  Much 
  as 
  in 
  the 
  mesopleurum, 
  but 
  

   more 
  oblique, 
  and 
  on 
  the 
  whole 
  slightly 
  larger, 
  as 
  the 
  hind 
  wings 
  are 
  

   larger. 
  The 
  episternum 
  is 
  narrower 
  below, 
  and 
  much 
  more 
  definitely 
  

  

  152 
  In 
  Fig. 
  13, 
  p. 
  259 
  of 
  the 
  1st 
  Report 
  of 
  the 
  Commission, 
  those 
  parts 
  are 
  wrongly 
  named; 
  the 
  tro. 
  

   chantine 
  is 
  the 
  anterior 
  and 
  the 
  coxa 
  is 
  the 
  posterior 
  piece. 
  

  

  