﻿270 
  LE 
  CONTE.— 
  SYNOPSIS 
  OF 
  THE 
  

  

  One 
  specimen, 
  Texas, 
  Mr. 
  Haldeman. 
  Very 
  similar 
  to 
  D. 
  truncatula, 
  but 
  differs 
  by 
  

   the 
  thorax 
  being 
  not 
  so 
  much 
  narrowed 
  in 
  front, 
  less 
  rounded 
  about 
  the 
  posterior 
  

   angles 
  and 
  less 
  densely 
  punctured. 
  The 
  feet 
  are 
  brownish, 
  the 
  anterior 
  tibiae 
  as 
  in 
  

   D. 
  truncatula. 
  

  

  17. 
  I). 
  carbonata, 
  oblonga, 
  atra 
  subnitida, 
  capite 
  dense 
  punctata, 
  clypeo 
  vix 
  hemihexagono, 
  tenuiter 
  

  

  niargiuato, 
  thorace 
  minus 
  dense 
  punctato, 
  lateribus 
  valde 
  rotundatis, 
  angulis 
  posticis 
  obtusis 
  rotun- 
  

   datis, 
  elytris 
  punctis 
  fortibus 
  fere 
  omnibus 
  seriatis, 
  subtrieostatis, 
  tibiis 
  anticis 
  tridentatis. 
  Long. 
  

   ■27—3. 
  

  

  New 
  Mexico 
  and 
  Texas, 
  Messrs. 
  Clark 
  and 
  Webb. 
  The 
  punctures 
  except 
  near 
  the 
  

   sutural 
  line 
  are 
  hardly 
  confused, 
  the 
  interstices 
  are 
  marked 
  with 
  ranges 
  of 
  small 
  punc- 
  

   tures 
  ; 
  the 
  upper 
  tooth 
  of 
  the 
  anterior 
  tibiae 
  is 
  obtuse 
  but 
  obvious. 
  

  

  18. 
  D. 
  atra 
  tula, 
  oblonga, 
  atra 
  subnitida, 
  capite 
  dense 
  punctato, 
  clypeo 
  hemihexagono, 
  antice 
  late 
  

  

  emarginato, 
  modiee 
  marginato, 
  thorace 
  fortius 
  punctato, 
  lateribus 
  antice 
  obliquis 
  parum 
  rotundatis 
  ad 
  

   angulos 
  posticos 
  fortius 
  rotundatis, 
  elytris 
  punctis 
  fortibus 
  fere 
  omnibus 
  seraitis, 
  vix 
  tricostatis, 
  tibiis 
  

   anticis 
  fortiter 
  tridentatis. 
  Long. 
  -3. 
  

  

  Frontera, 
  New 
  Mexico, 
  Mr. 
  Clark. 
  Of 
  the 
  form 
  size 
  and 
  color 
  of 
  D. 
  carbonata, 
  but 
  

   differing 
  in 
  the 
  sides 
  of 
  the 
  thorax 
  being 
  oblique 
  and 
  hardly 
  rounded, 
  except 
  near 
  the 
  

   posterior 
  angles 
  ; 
  the 
  punctures 
  of 
  the 
  elytra 
  are 
  not 
  confused 
  near 
  the 
  sutural 
  line, 
  

   and 
  the 
  interstices 
  are 
  not 
  punctured. 
  The 
  legs 
  as 
  usual 
  are 
  brown, 
  and 
  the 
  upper 
  

   tooth 
  of 
  the 
  anterior 
  tibias 
  is 
  strong 
  and 
  acute. 
  

  

  19. 
  D. 
  m 
  o 
  r 
  u 
  1 
  a 
  , 
  elongato-oblonga, 
  atra 
  subnitida, 
  capite 
  confertim 
  punctato, 
  clypeo 
  hemihexagono, 
  anguste 
  

   marginato 
  antice 
  truncato, 
  sutura 
  frontali 
  profunda, 
  thorace 
  sat 
  dense 
  punctato, 
  lateribus 
  antice 
  obliquis 
  

   postice 
  cum 
  angulis 
  rotundatis, 
  elytris 
  fortius 
  punctatis, 
  tricostatis, 
  tibiis 
  anticis 
  fortius 
  tridentatis. 
  

   Long. 
  -3. 
  

  

  One 
  specimen, 
  Kansas. 
  Narrower 
  than 
  the 
  preceding 
  species, 
  from 
  which 
  it 
  also 
  

   differs, 
  not 
  only 
  by 
  the 
  posterior 
  angles 
  of 
  the 
  thorax 
  less 
  suddenly 
  rounded, 
  but 
  by 
  

   the 
  punctures 
  between 
  the 
  geminate 
  rows 
  being 
  confused 
  ; 
  the 
  costae 
  themselves 
  are 
  

   marked 
  with 
  a 
  few 
  small 
  punctures. 
  The 
  legs 
  are 
  brown, 
  and 
  the 
  upper 
  tooth 
  of 
  the 
  

   anterior 
  tibias 
  is 
  strongly 
  marked. 
  

  

  20. 
  D. 
  punctata, 
  nigro-picea, 
  oblonga, 
  convexa, 
  nitida, 
  capite 
  confertim 
  punctato, 
  marginato, 
  hemihexa- 
  

   gono, 
  antice 
  late 
  truncato, 
  sutura 
  frontali 
  impressa, 
  thorace 
  fortiter 
  minus 
  dense 
  punctato, 
  lateribus 
  

   antice 
  obliquis, 
  pone 
  medium 
  valde 
  rotundatis 
  fere 
  angulatis, 
  angulis 
  posticis 
  perobtusis, 
  elytris 
  fortius 
  

   punctatis, 
  subcostatis, 
  tibiis 
  anticis 
  fortius 
  tridentatis. 
  Long. 
  -32. 
  

  

  One 
  specimen, 
  Frontera, 
  Rio 
  Grande, 
  Mr. 
  Clark. 
  The 
  punctures 
  of 
  the 
  two 
  inner 
  

   interstices 
  of 
  the 
  elytra 
  are 
  confused, 
  but 
  the 
  costa3 
  are 
  not 
  very 
  distinct 
  ; 
  the 
  costae 
  

   are 
  marked 
  with 
  a 
  row 
  of 
  fine 
  punctures. 
  

  

  21. 
  D. 
  cribulosa, 
  oblonga, 
  subovata, 
  ferruginea 
  nitida. 
  parce 
  fulvo-pubescens, 
  capite 
  fortius 
  dense 
  punctato, 
  

  

  marginato, 
  hemihexagono, 
  antice 
  late 
  truncato, 
  sutura 
  frontali 
  impressa, 
  thorace 
  fortiter 
  minus 
  parce 
  

   punotato, 
  lateribus 
  rotundatis, 
  antice 
  obliquis, 
  angulis 
  posticis 
  obtusis, 
  elytris 
  fortiter 
  punctatis, 
  sub- 
  

   costatis, 
  tibiis 
  anticis 
  subtridentatis. 
  Long. 
  -34. 
  

  

  