﻿8 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  67 
  

  

  28. 
  Thorax 
  with 
  the 
  median 
  smooth 
  stripe 
  indistinct. 
  The 
  elytra 
  longer 
  than 
  

  

  broad, 
  slightly 
  longer 
  than 
  the 
  thorax. 
  Length 
  7.5 
  mm 
  mundus 
  Sharp. 
  

  

  Thorax 
  with 
  the 
  median 
  smooth 
  stripe 
  distinctly 
  limited 
  either 
  side 
  by 
  a 
  

   row 
  of 
  puctures 
  29 
  

  

  29. 
  Outer 
  antennal 
  joints 
  not 
  transverse. 
  The 
  thoracic 
  and 
  elytral 
  punctures 
  

  

  in 
  general 
  coarser 
  and 
  more 
  numerous. 
  Length 
  5-5.5 
  mm. 
  

  

  latipes 
  Gravenhorst. 
  

   Outer 
  antennal 
  joints 
  distinctly 
  transverse. 
  The 
  thoracic 
  and 
  elytral 
  punc- 
  

   tures 
  in 
  general 
  sparser 
  and 
  finer 
  30 
  

  

  30. 
  Punctures 
  of 
  the 
  fifth 
  dorsal 
  abdominal 
  segment 
  larger, 
  variolate. 
  The 
  

  

  elytra 
  frequently 
  with 
  a 
  distinct 
  discal 
  row 
  of 
  punctures. 
  Larger. 
  

  

  Length 
  5-5.5 
  mm 
  variolatus, 
  new 
  species. 
  

  

  Punctures 
  of 
  the 
  fifth 
  dorsal 
  abdominal 
  segment 
  smaller, 
  not 
  variolate. 
  

   Smaller. 
  Length 
  4,5 
  mm. 
  or 
  less 
  31 
  

  

  31. 
  Thorax 
  slightly 
  wider 
  than 
  the 
  elytra, 
  with 
  the 
  sides 
  more 
  strongly 
  nar- 
  

  

  rowed 
  posteriorly. 
  Larger. 
  Length 
  4.5 
  mm 
  difficilis, 
  new 
  species. 
  

  

  Thorax 
  not 
  wider 
  than 
  the 
  elytra. 
  The 
  sides 
  less 
  narrowed 
  posteriorly. 
  

   Smaller. 
  Length 
  3.5-4 
  mm 
  brevicornis 
  Notman. 
  

  

  32. 
  Thorax 
  distinctly 
  broader 
  than 
  long. 
  The 
  head 
  with 
  the 
  vertex 
  strongly 
  

  

  shining. 
  The 
  clypeal 
  angles 
  prominent. 
  Length 
  7 
  mm. 
  

  

  * 
  sublaevis 
  Bernhauer. 
  

   Thorax 
  about 
  as 
  broad 
  as 
  long 
  33 
  

  

  33. 
  Clypeus 
  emarginate, 
  with 
  the 
  anterior 
  angles 
  more 
  or 
  less 
  distinctly 
  prom- 
  

  

  inent 
  34 
  

  

  Clypeus 
  truncate 
  or 
  subtruncate 
  37 
  

  

  34. 
  Median 
  smooth 
  stripe 
  of 
  the 
  thorax 
  not 
  bounded 
  by 
  seriate 
  punctures. 
  

  

  Length 
  7 
  mm 
  * 
  germanus 
  Sharp. 
  

  

  Thorax 
  with 
  seriate 
  punctures 
  or 
  more 
  or 
  less 
  coarsely 
  and 
  closely 
  

   punctured 
  35 
  

  

  35. 
  Elytra 
  subimpunctate. 
  Smaller. 
  Lenght 
  5 
  mm 
  * 
  mexicaaus 
  Bernhauer. 
  

  

  Elytra 
  punctate 
  36 
  

  

  36. 
  Front 
  of 
  the 
  head 
  longitudinally 
  rugulose 
  between 
  the 
  eyes. 
  The 
  elytra 
  

  

  with 
  a 
  few 
  subseriate 
  punctures. 
  Length 
  8.5 
  mm 
  * 
  cylindricus 
  Latreille. 
  

  

  Front 
  of 
  the 
  head 
  not 
  rugulose, 
  punctate 
  with 
  a 
  smooth 
  space 
  before 
  the 
  

   vertex. 
  The 
  elytra 
  coarsely 
  and 
  strongly 
  punctured. 
  Length 
  10 
  mm. 
  

  

  * 
  solidus 
  Sharp. 
  

  

  37. 
  Thorax 
  without 
  seriate 
  punctuation. 
  The 
  median 
  smooth 
  stripe 
  indistinct. 
  

  

  38 
  

  

  Thorax 
  with 
  distinct 
  seriate 
  punctuation 
  or 
  with 
  the 
  smooth 
  stripe 
  well 
  

  

  defined 
  39 
  

  

  38. 
  Head, 
  thorax, 
  and 
  elytra 
  with 
  coarse 
  punctuation. 
  The 
  head 
  and 
  thorax 
  

  

  distinctly 
  alutaceous; 
  the 
  elytra 
  shining. 
  The 
  thorax 
  with 
  the 
  sides 
  

   sinuate 
  before 
  the 
  posterior 
  angles. 
  Length 
  9 
  mm 
  *affinis 
  Sharp- 
  

   Head, 
  thorax, 
  and 
  elytra 
  not 
  distinctly 
  alutaceous, 
  finely, 
  the 
  thorax 
  and 
  

   elytra 
  very 
  sparsely 
  punctate. 
  The 
  head 
  narrower 
  than 
  the 
  thorax. 
  

   The 
  elytra 
  longer 
  than 
  the 
  thorax. 
  Length 
  4.5 
  mm. 
  

  

  * 
  laeviusculus 
  Bernhauer. 
  

  

  39. 
  Thoracic 
  punctuation 
  fine 
  and 
  sparse; 
  the 
  dorsal 
  series 
  composed 
  of 
  six 
  

  

  rather 
  fine 
  punctures. 
  Length 
  7 
  mm 
  * 
  sexpunctatus 
  Bernhauer. 
  

  

  Thoracic 
  punctuation 
  coarse 
  or 
  with 
  dorsal 
  series 
  of 
  more 
  numerous 
  punc- 
  

   tures 
  40 
  

  

  