﻿204 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol. 
  xx. 
  

  

  The 
  supraaual 
  plate 
  is 
  regularly 
  triangular 
  with 
  straight 
  sides 
  and 
  

   acutangulate 
  apex, 
  the 
  surface 
  entirely 
  in 
  the 
  same 
  plane 
  from 
  base 
  to 
  

   apex, 
  i. 
  e.jwith 
  no 
  apical 
  depression. 
  The 
  furcula 
  in 
  the 
  single 
  known 
  

   species 
  is 
  reduced 
  to 
  a 
  pair 
  of 
  very 
  slight 
  rather 
  distant 
  spines, 
  no 
  

   longer 
  tlian 
  the 
  last 
  dorsal 
  segment. 
  The 
  cerci 
  taper 
  considerably 
  at 
  

   base, 
  but 
  more 
  by 
  excision 
  of 
  the 
  lowerthan 
  of 
  the 
  upper 
  margin, 
  and 
  

   beyond 
  the 
  middle 
  are 
  subequal, 
  hardly 
  in 
  the 
  least 
  incurved, 
  and 
  api- 
  

   cally 
  augulate. 
  The 
  subgeuital 
  i)late 
  is 
  of 
  equal 
  breadth 
  throughout 
  

   and 
  terminates 
  in 
  a 
  postmarginal 
  blunt 
  tubercle 
  above, 
  the 
  apical 
  mar- 
  

   gin 
  being 
  abbreviated, 
  rounded, 
  and 
  entire. 
  

  

  The 
  single 
  species 
  occurs 
  in 
  the 
  Southern 
  States, 
  east 
  of 
  the 
  Missis- 
  

   sippi. 
  

  

  36. 
  MELANOPLUS 
  IMPUDICUS, 
  new 
  species. 
  

   (Plate 
  XIV, 
  tig. 
  1.) 
  

  

  Of 
  medium 
  size, 
  brownish 
  fuscous, 
  with 
  a 
  decided 
  ferruginous 
  tinge. 
  

   Head 
  moderately 
  j)rominent, 
  testaceous 
  or 
  ferrugineo-testaceous, 
  dotted 
  

   above 
  with 
  fuscous, 
  the 
  dots 
  mesially 
  forming 
  a 
  stripe, 
  and 
  with 
  a 
  dis- 
  

   tinct 
  postocular 
  piceous 
  band; 
  vertex 
  rather 
  tumid, 
  distinctly 
  elevated 
  

   above 
  the 
  pronotum, 
  the 
  interspace 
  between 
  the 
  eyes 
  as 
  broad 
  (male) 
  

   or 
  fully 
  half 
  as 
  broad 
  again 
  (female) 
  as 
  the 
  first 
  antennal 
  joint; 
  fas- 
  

   tigium 
  steeply 
  declivent, 
  feebly 
  (male) 
  or 
  very 
  feebly 
  (female) 
  sulcate; 
  

   face 
  more 
  than 
  usually 
  retreating, 
  the 
  frontal 
  costa 
  failing 
  to 
  reach 
  the 
  

   clypeus, 
  equal, 
  as 
  broad 
  (male) 
  or 
  almost 
  as 
  broad 
  (female) 
  as 
  the 
  inter- 
  

   space 
  between 
  the 
  eyes, 
  sulcate 
  excepting 
  above 
  where 
  it 
  is 
  biseriately 
  

   punctate; 
  eyes 
  not 
  very 
  prominent, 
  rather 
  large, 
  distinctly 
  longer 
  than 
  

   the 
  intraocular 
  i)ortion 
  of 
  the 
  genae; 
  antennae 
  ferruginous, 
  less 
  than 
  

   two-thirds 
  (male) 
  or 
  about 
  three-fifths 
  (female) 
  as 
  long 
  as 
  the 
  hind 
  

   femora. 
  Pronotum 
  subequal, 
  expanding 
  a 
  little 
  on 
  the 
  metazona, 
  the 
  

   disk 
  ferrugineo-luteous 
  flecked 
  with 
  fuscous, 
  very 
  feebly 
  convex, 
  pass- 
  

   ing 
  by 
  a 
  rounded 
  shoulder 
  nowhere 
  forming 
  lateral 
  carinae 
  into 
  the 
  

   anteriorly 
  tumid 
  vertical 
  lateral 
  lobes, 
  which 
  are 
  of 
  the 
  color 
  of 
  the 
  

   face, 
  with 
  a 
  broad 
  piceous 
  postocular 
  stripe 
  across 
  the 
  prozona; 
  median 
  

   carina 
  distinct 
  on 
  the 
  metazona, 
  feeble 
  and 
  in 
  the 
  female 
  subobsolete 
  

   on 
  the 
  j)rozona; 
  front 
  margin 
  truncate; 
  hind 
  margin 
  obtusangulate; 
  

   prozona 
  feebly 
  longitudinal 
  (male) 
  or 
  distinctly 
  transverse 
  (female), 
  a 
  

   little 
  (male) 
  or 
  no 
  (female) 
  longer 
  than 
  the 
  delicately 
  punctate 
  meta- 
  

   zona. 
  Prosternal 
  spine 
  rather 
  long 
  (male) 
  or 
  rather 
  short 
  (female), 
  

   conical, 
  rather 
  blunt, 
  suberect; 
  interspace 
  between 
  mesosternal 
  lobes 
  

   nearly 
  half 
  as 
  long 
  again 
  as 
  broad 
  in 
  both 
  sexes, 
  the 
  metasternal 
  

   lobes 
  approximate 
  (male) 
  or 
  somewhat 
  approximate 
  (female). 
  Tegmina 
  

   surpassing 
  a 
  little 
  (male) 
  or 
  considerably 
  (female) 
  the 
  hind 
  femora, 
  

   moderately 
  broad, 
  tapering 
  (more 
  rapidly 
  in 
  the 
  male 
  than 
  in 
  the 
  female), 
  

   brownish 
  fuscous, 
  the 
  discoidal 
  area 
  lighter 
  at 
  least 
  on 
  the 
  basal 
  half, 
  

   and 
  fiecked 
  throughout 
  with 
  tolerably 
  large, 
  more 
  or 
  less 
  rounded, 
  dark 
  

   fuscous 
  spots; 
  wings 
  rather 
  broad, 
  hyaline 
  at 
  base, 
  beyond 
  infumated 
  

  

  