﻿412 
  REVISION 
  OF 
  THE 
  BLATERIDjE 
  

  

  punctatis, 
  striig 
  pu 
  ictatis, 
  1 
  'mmcro 
  dimidioque 
  postico 
  fuscis, 
  pedibus 
  antenuisque 
  rufis, 
  

  

  Lis 
  articulo 
  : 
  '" 
  sequente 
  paulo 
  I 
  aoribus 
  infuscatis. 
  Long. 
  "21 
  — 
  ■'■'<. 
  

  

  roc. 
  Acad. 
  Nat. 
  Sc. 
  6, 
  16. 
  

  

  M 
  lis 
  Say, 
  Journ. 
  Acad. 
  Nat. 
  Sc. 
  3, 
  166. 
  

  

  /.,■ 
  mis 
  Say, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  187« 
  

  

  Missouri, 
  near 
  Booncvillc. 
  One 
  specimen 
  has 
  the 
  elytra 
  entirely 
  yellow. 
  The 
  antennae 
  

   of 
  the 
  male 
  are 
  strongly 
  tlabellate 
  from 
  the 
  fourth 
  joint: 
  the 
  apex 
  of 
  the 
  abdomen 
  of 
  both 
  

   sexes 
  has 
  three 
  small 
  prominences 
  beneath, 
  of 
  which 
  the 
  middle 
  one 
  is 
  crest-like, 
  and 
  the 
  

   lateral 
  ones 
  tuberculiform. 
  This 
  species 
  differs 
  from 
  the 
  next 
  by 
  the 
  less 
  elongated 
  third 
  

   joint 
  of 
  the 
  antennae. 
  

  

  2. 
  T. 
  obliquus, 
  niger, 
  tenuiter 
  pubescens, 
  capite 
  thoraceque 
  scabro-punctatis, 
  boc 
  quadrato, 
  

   lateribus 
  ad 
  apicem 
  paulo 
  rotundatis, 
  angulis 
  posticis 
  acutis, 
  linea 
  dorsali 
  pone 
  medium 
  acute 
  impres- 
  

   sa: 
  elytris 
  scabris, 
  sti'iis 
  punctatis, 
  sutura 
  usque 
  ad 
  medium 
  late 
  lutco-testacea, 
  pedibus 
  antennisque 
  

   rufo-testaceis, 
  his 
  articulo 
  -')'" 
  sequentibus 
  duobus 
  sequali, 
  femoribus 
  infuscatis. 
  Long. 
  *23 
  — 
  - 
  32. 
  

  

  Le 
  Oonte, 
  Proc. 
  Acad. 
  Nat. 
  Sc. 
  6, 
  46. 
  

  

  Eucnemis 
  obliquus 
  Hay, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  6, 
  187. 
  

  

  Ohio, 
  New 
  York, 
  New 
  Hampshire. 
  In 
  six 
  specimens, 
  I 
  can 
  discover 
  no 
  sexual 
  differ- 
  

   ences: 
  the 
  fourth 
  joint 
  of 
  the 
  antenna) 
  is 
  a 
  little 
  less 
  dilated 
  in 
  one 
  than 
  in 
  the 
  other 
  five: 
  

   the 
  antenna) 
  after 
  the 
  fourth 
  joint 
  are 
  strongly 
  serrate, 
  almost 
  pectinate, 
  the 
  joints 
  gradu- 
  

   ally 
  becoming 
  more 
  transverse: 
  the 
  third 
  joint 
  is 
  slender, 
  and 
  as 
  long 
  as 
  the 
  fourth 
  and 
  

   fifth 
  together. 
  The 
  apex 
  of 
  the 
  abdomen, 
  as 
  in 
  the 
  preceding 
  species, 
  has 
  three 
  small 
  

   elevations. 
  

  

  Div. 
  2. 
  EUCNEMIDES. 
  

  

  This 
  division 
  is 
  sufficiently 
  characterized 
  by 
  having 
  the 
  front 
  slightly 
  and 
  uniformly 
  

   convex, 
  the 
  antennae 
  moderately 
  approximated, 
  inserted 
  in 
  a 
  deep 
  sinus, 
  with 
  the 
  clypeus 
  

   expanding 
  anteriorly: 
  the 
  labrum 
  appears 
  merely 
  as 
  an 
  indistinct 
  margin 
  to 
  the 
  clypeus: 
  

   the 
  presternum 
  is 
  truncate 
  anteriorly: 
  the 
  lobe 
  seen 
  in 
  Elaterides 
  is 
  represented 
  by 
  a 
  

   margin 
  separated 
  by 
  an 
  impressed 
  transverse 
  line: 
  the 
  lateral 
  suture 
  is 
  nearly 
  always 
  

   straight, 
  in 
  Anelastes 
  alone, 
  a 
  little 
  curved, 
  and 
  meets 
  the 
  lateral 
  margin 
  of 
  the 
  thorax 
  at 
  

   the 
  anterior 
  angle: 
  the 
  posterior 
  spine 
  is 
  short 
  and 
  usually 
  truncate, 
  somewhat 
  as 
  in 
  Car- 
  

   diophorus: 
  the 
  anterior 
  part 
  of 
  the 
  sides 
  of 
  the 
  prothorax 
  reaches 
  the 
  eyes, 
  which 
  are 
  

   thus 
  partially 
  concealed. 
  The 
  coxal 
  plates 
  are 
  always 
  distinct, 
  frequently 
  very 
  broad: 
  

   the 
  first 
  joint 
  of 
  the 
  antenna) 
  is 
  always 
  long; 
  the 
  last 
  joint 
  of 
  the 
  maxillary 
  palpi 
  always 
  

   dilated, 
  and 
  usually 
  large: 
  the 
  ungues 
  either 
  entire, 
  or 
  with 
  a 
  single 
  tooth 
  at 
  the 
  middle. 
  

  

  I 
  have 
  removed 
  from 
  this 
  division 
  Melasis 
  and 
  Tharops, 
  for 
  reasons 
  before 
  given, 
  and, 
  

   therefore, 
  modify 
  the 
  synoptic 
  table 
  of 
  genera 
  given 
  by 
  me 
  in 
  the 
  Proceedings 
  of 
  the 
  Aca- 
  

   demy 
  of 
  Natural 
  Sciences, 
  vol. 
  6, 
  p. 
  45, 
  to 
  suit 
  this 
  change 
  of 
  classification. 
  

  

  A. 
  Thorax 
  subtus 
  non 
  sulcatus 
  : 
  

  

  Coxfe 
  posticre 
  laminis 
  angustis; 
  

  

  intus 
  quadrangulariter 
  paulo 
  dilatatis; 
  ... 
  Anelastes. 
  

  

  intus 
  non 
  dilatatis 
  - 
  - 
  - 
  - 
  Hylocliares. 
  

  

  