﻿804 
  REPORT 
  UNITED 
  STATES 
  GEOLOGICAL 
  SURVEY. 
  

  

  Ceiocephalus 
  peoductus 
  Le 
  Oonte. 
  (Plate 
  LXX, 
  Fig. 
  7.) 
  

  

  Varying 
  from 
  dark 
  brown 
  to 
  black 
  brown 
  ; 
  unspotted, 
  with 
  two 
  high, 
  

   thin, 
  raised 
  lines 
  or 
  ridges 
  on 
  each 
  wing-cover. 
  It 
  is 
  closely 
  allied 
  to 
  

   the 
  eastern 
  C. 
  agrestis, 
  but 
  is 
  somewhat 
  narrower, 
  and 
  the 
  ridges 
  are 
  

   much 
  more 
  prominent. 
  Length, 
  0.80-0.85 
  inch. 
  

  

  Dectes 
  spinosus 
  (Say). 
  (Plate 
  LXX, 
  Fig. 
  8.) 
  

  

  "Head 
  deeply 
  indented 
  between 
  the 
  antennae 
  5 
  labrumpiceous; 
  antennae 
  

   longer 
  than 
  the 
  body, 
  black, 
  each 
  joint 
  gray 
  at 
  base; 
  thorax 
  cylindrical, 
  

   immaculate 
  ; 
  an 
  acute, 
  slightly-recurved 
  spine 
  near 
  the 
  posterior 
  angles; 
  

   elytra 
  (wing-covers) 
  with 
  numerous 
  small 
  impressed 
  punctures, 
  at 
  tip 
  trun- 
  

   cated 
  ; 
  venter 
  with 
  a 
  series 
  of 
  almost 
  concealed 
  black 
  spots 
  on 
  each 
  side. 
  

   Length 
  more 
  than 
  three-tenths 
  of 
  an 
  inch." 
  — 
  (Say.) 
  "I 
  formed 
  a 
  special 
  

   genus, 
  Dectes, 
  for 
  this 
  insect, 
  but 
  it 
  seems 
  to 
  be 
  scarcely 
  distinct 
  from 
  

   Liopus.''^ 
  — 
  (Le 
  Conte.) 
  

  

  PoGONOCHERUS 
  MiXTUS 
  Haldeman. 
  (Plate 
  LXX, 
  Fig. 
  9.) 
  

  

  " 
  Head 
  sparsely 
  hairy, 
  black, 
  with 
  an 
  indistinct 
  yellowish 
  spot 
  before 
  

   the 
  eyes; 
  frontal 
  line 
  impressed; 
  antennae 
  testaceous, 
  with 
  the 
  tip 
  of 
  

   the 
  articulations 
  blackish 
  ; 
  scutel 
  black 
  ; 
  elytra 
  hispid 
  ; 
  base, 
  middle, 
  

   and 
  apex 
  brown 
  ; 
  extreme 
  tip 
  and 
  an 
  oblique 
  band 
  before 
  the 
  middle 
  

   running 
  forward 
  and 
  outward, 
  yellowish, 
  with 
  a 
  few 
  brown 
  dots 
  ; 
  ex- 
  

   treme 
  base 
  testaceous; 
  feet 
  brown, 
  varied 
  with 
  testaceous; 
  2J 
  lines 
  

   long. 
  Pennsylvania." 
  — 
  (Haldeman.) 
  

  

  Mecas 
  pergrata 
  Say. 
  (Plate 
  LXX, 
  Fig. 
  10.) 
  

  

  " 
  Body 
  black, 
  covered 
  with 
  short, 
  prostrate 
  hair, 
  which 
  partially 
  con- 
  

   ceals 
  the 
  punctures; 
  antennae 
  nearly 
  as 
  long 
  as 
  the 
  body, 
  annulate 
  "v\^ith 
  

   cinereous 
  and 
  black 
  ; 
  thorax 
  slightly 
  dilated 
  in 
  the 
  middle 
  ; 
  a 
  trans- 
  

   verse, 
  arcuated 
  series 
  of 
  four 
  glabrous 
  spots, 
  and 
  a 
  longitudinal, 
  ab- 
  

   breviated, 
  glabrous 
  line 
  behind 
  the 
  middle 
  ; 
  scutel 
  whitish 
  ; 
  elytra 
  with 
  

   a 
  narrow 
  white 
  margin 
  and 
  suture 
  ; 
  tip 
  entire 
  ; 
  thighs 
  dull 
  rufous. 
  

   Length 
  about 
  nine-twentieths 
  of 
  an 
  inch. 
  Upon 
  the 
  middle 
  of 
  each 
  

   elytron 
  is 
  a 
  very 
  indistinct 
  rufous 
  line, 
  which 
  is 
  only 
  visible 
  upon 
  close 
  

   inspection, 
  and 
  is 
  very 
  i)robably 
  often 
  wanting; 
  a 
  similar 
  spot 
  is 
  upon- 
  

   the 
  anterior 
  portion 
  of 
  the 
  thorax 
  ; 
  the 
  white 
  appearance 
  of 
  the 
  margin 
  

   of 
  the 
  elytra 
  is 
  occasioned 
  by 
  the 
  more 
  dense 
  disposition 
  of 
  the 
  hairs 
  on 
  

   that 
  part. 
  We 
  captured 
  but 
  a 
  single 
  specimen 
  on 
  the 
  Platte 
  Eiver 
  (Ne- 
  

   braska) 
  near 
  the 
  mountains." 
  — 
  (Say.) 
  

  

  Chrysobothris 
  trinervia 
  (Kirby). 
  (Plate 
  LXX, 
  Fig. 
  11.) 
  

  

  A 
  rather 
  small, 
  short, 
  broad 
  species, 
  dull 
  blackish, 
  with 
  faint, 
  metal- 
  

   lic 
  reflections. 
  Surface 
  of 
  the 
  body, 
  especially 
  the 
  wing-covers, 
  with 
  

   irregular 
  ridges, 
  the 
  inner 
  one 
  parallel 
  to 
  the 
  inner 
  edge 
  of 
  the 
  wing- 
  

   cover; 
  wing-covers 
  with 
  smooth 
  elevated 
  areas, 
  between 
  which 
  the 
  

   surface 
  is 
  minutely 
  pitted 
  with 
  dense 
  golden 
  punctures. 
  Body 
  clothed 
  

   beneath 
  with 
  short, 
  coarse 
  hairs. 
  Length, 
  0.45 
  inch. 
  

  

  Buprestis 
  rusticorum 
  Kirby. 
  (Plate 
  LXX, 
  Fig. 
  12.) 
  

  

  Body 
  brown, 
  with 
  an 
  olive-green 
  tint. 
  Head 
  and 
  thorax 
  punctured. 
  

   Each 
  wing-cover 
  with 
  five 
  ridges, 
  four 
  of 
  them 
  well-marked 
  and 
  smooth, 
  

  

  