﻿12 
  PROCEEDINdS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  broad 
  as, 
  or 
  nearly 
  as 
  broad 
  as, 
  the 
  lobes 
  themselves; 
  of 
  the 
  female 
  distinctly 
  

  

  or 
  stron<>ly 
  trjnisverse, 
  fully 
  as 
  broad 
  as 
  or 
  (and 
  generally) 
  broader 
  than 
  the 
  

  

  lobes; 
  metastenial 
  lobes 
  of 
  male 
  generally 
  distinctly 
  distant, 
  occasionally 
  

  

  approximates; 
  of 
  the 
  female 
  generally 
  more 
  distant, 
  the 
  interspace 
  in 
  the 
  latter 
  

  

  generally 
  as 
  wide 
  as 
  or 
  wider 
  than 
  the 
  frontal 
  costa 
  ; 
  tegmina 
  typically 
  

  

  abbreviate. 
  

  

  c'. 
  Face 
  almost 
  vertical; 
  eyes 
  small, 
  but 
  prominent 
  and 
  widely 
  distant; 
  pro- 
  

  

  notum 
  constricted 
  in 
  the 
  middle, 
  with 
  deeply 
  impressed 
  transverse 
  sulci, 
  and 
  

  

  the 
  lateral 
  lobes 
  not 
  obliquely 
  truncate 
  apically 
  in 
  front; 
  distinct 
  lateral 
  

  

  cariuae 
  20. 
  Dendroiettix 
  (p. 
  91). 
  

  

  e-. 
  Face 
  a 
  little 
  obli(iue; 
  eyes 
  rather 
  large, 
  not 
  very 
  prominent, 
  and 
  not 
  

   greatly 
  distant; 
  premotum 
  not, 
  or 
  but 
  feebly, 
  constricted 
  in 
  the 
  middle, 
  

   with 
  generally 
  feebly 
  impressed 
  ti'ansverse 
  sulci 
  and 
  the 
  lateral 
  lobes 
  

  

  obliquely 
  truncate 
  apically 
  on 
  the 
  anterior 
  section 
  21. 
  Fodisma 
  (p. 
  94). 
  

  

  [/'. 
  Pronotum 
  of 
  snbeqnal 
  width, 
  the 
  sides 
  nearly 
  parallel 
  ; 
  subgenital 
  

  

  plate 
  of 
  male 
  normal 
  Podisma, 
  s.s. 
  

  

  /^ 
  Pronotum 
  enlarging 
  posteriorly, 
  conspicuously 
  in 
  the 
  female; 
  sub- 
  

   genital 
  i)late 
  of 
  male 
  exceptionally 
  expanded, 
  laterally 
  tumid 
  and 
  elevated 
  

  

  premarginally 
  E 
  u 
  p 
  o 
  d 
  i 
  s 
  m 
  a 
  .] 
  

  

  d'^. 
  Interspace 
  between 
  mesosternal 
  lobes 
  generally 
  longer 
  or 
  much 
  longer 
  

   than 
  broad 
  in 
  the 
  male, 
  almost 
  never 
  (see 
  Mdanoplus 
  montanus 
  and 
  M. 
  horealis) 
  

   in 
  the 
  least 
  broader 
  than 
  long 
  even 
  when 
  the 
  sides 
  of 
  the 
  interspace 
  are 
  

   posteriorly 
  divergent; 
  generally 
  quadrate 
  in 
  the 
  female 
  but 
  more 
  variable 
  

   than 
  in 
  the 
  other 
  sex, 
  sometimes 
  as 
  narrow 
  as 
  there, 
  more 
  often 
  subtransverse, 
  

   occasionally 
  in 
  some 
  short- 
  winged 
  forms 
  (as 
  in 
  J/e/anojj/«.sariemisiae, 
  M.militaris, 
  

   M. 
  altitadhtiim 
  and 
  Asemoplus 
  monfanus) 
  distinctly 
  transverse; 
  in 
  both 
  sexes 
  

   always 
  distinctly, 
  generally 
  much, 
  narrower 
  than 
  the 
  lobes 
  (except 
  in 
  the 
  

   females 
  of 
  the 
  cases 
  just 
  cited, 
  where 
  they 
  are 
  barely 
  narrower) 
  ; 
  metasternal 
  

   lubes 
  of 
  male 
  generally 
  attingent 
  or 
  subattingeut, 
  rarely 
  only 
  approximate; 
  

   of 
  the 
  female 
  less 
  distant 
  than 
  in 
  the 
  alternate 
  category 
  ( 
  J- 
  />-c'f?'), 
  generally 
  

   approximate 
  or 
  subapproximate, 
  the 
  interspace 
  generally 
  narrower 
  than 
  the 
  

   frontal 
  costa; 
  typically 
  the 
  tegmina 
  are 
  completely 
  developed. 
  

   e'. 
  Face 
  almost 
  vertical 
  or 
  a 
  little 
  oblique, 
  its 
  angle 
  with 
  the 
  fastiginm 
  

   rarely 
  less 
  than 
  75° 
  ; 
  eyes 
  I'ounded 
  oval, 
  never 
  more, 
  generally 
  less, 
  than 
  

   half 
  as 
  long 
  again 
  as 
  broad; 
  portion 
  of 
  metasternum 
  lying 
  behind 
  the 
  lobes 
  

   transverse, 
  more 
  than 
  twice 
  as 
  broad 
  as 
  long; 
  tegmina 
  normally 
  present. 
  

   /'. 
  Tegmina 
  always 
  present; 
  sides 
  of 
  first 
  abdominal 
  segment 
  with 
  a 
  dis- 
  

   tinct 
  tympanum. 
  

   gK 
  Fastiginm 
  of 
  vertex 
  plane 
  or 
  convex; 
  eyes 
  separated 
  widely, 
  the 
  

   space 
  between 
  them 
  twice 
  as 
  broad 
  as 
  the 
  frontal 
  costa; 
  pronotum 
  

   furnished 
  with 
  distinct 
  percurrent 
  lateral 
  cariuae; 
  tegmina 
  abbreviate; 
  

  

  cerci 
  apically 
  acuuiinate 
  22. 
  Faratylotropidia 
  {]}.lVi). 
  

  

  y'^. 
  Fastiginm 
  of 
  vertex 
  more 
  or 
  less 
  depressed 
  or 
  with 
  elevated 
  lateral 
  

   margins; 
  eyes 
  separated 
  narrowlj, 
  at 
  most 
  but 
  little 
  further 
  apart 
  than 
  

   the 
  width 
  of 
  the 
  frontal 
  costa; 
  pronotum 
  with 
  indistinct' 
  or 
  no 
  lateral 
  

   carinae; 
  tegmina 
  fully 
  developed 
  or 
  abbreviate; 
  cerci 
  variable, 
  rarely 
  

   acuminate 
  apically. 
  

   A 
  '. 
  Inferior 
  genicular 
  lobe 
  of 
  hind 
  femora 
  with 
  at 
  least 
  a 
  darker 
  basal 
  

   spot 
  or 
  transverse 
  band; 
  cerci 
  of 
  male 
  variable, 
  often 
  enlarging 
  

   apically. 
  

   )'. 
  Dorsum 
  of 
  pronotum 
  rarely 
  or 
  never 
  twice 
  as 
  long 
  as 
  the 
  average 
  

   breadth, 
  generally 
  only 
  half 
  as 
  long 
  again 
  even 
  in 
  the 
  male, 
  gener- 
  

   ally 
  constricted 
  more 
  or 
  less 
  in 
  the 
  middle; 
  antennae 
  even 
  when 
  

   longest 
  (as 
  in 
  Melanoplus 
  nitidus 
  and 
  M. 
  packardii, 
  for 
  instance) 
  no 
  

  

  In 
  a 
  few 
  species 
  they 
  are 
  tolerably 
  distinct. 
  

  

  