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  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

  

  Tex., 
  all 
  collected 
  in 
  July. 
  In 
  one 
  of 
  the 
  latter 
  specimens 
  the 
  ridges 
  

   between 
  the 
  rostral 
  sulci 
  are 
  so 
  greatly 
  developed 
  that 
  the 
  transverse 
  

   impression 
  between 
  the 
  head 
  and 
  rostrum 
  is 
  completely 
  wanting. 
  

   This 
  species 
  superficially 
  resembles 
  E. 
  geminatus 
  Horn, 
  as 
  pointed 
  

   out 
  by 
  Van 
  Dyke, 
  1934, 
  p. 
  177, 
  but 
  may 
  be 
  distinguished 
  from 
  that 
  

   species 
  by 
  the 
  stouter 
  rostrum, 
  and 
  the 
  genitalia, 
  as 
  well 
  as 
  by 
  the 
  

   locality. 
  I 
  do 
  not 
  tliink 
  the 
  character 
  of 
  the 
  rounded 
  or 
  trmicate 
  

   posterior 
  tibiae 
  will 
  serve 
  to 
  separate 
  the 
  two, 
  as 
  E 
  geminatus 
  exhibits 
  

   too 
  much 
  variation 
  in 
  this 
  respect. 
  From 
  E. 
  argentatus 
  (LeConte), 
  

   to 
  which 
  it 
  seems 
  most 
  closely 
  related, 
  simulans 
  may 
  be 
  distmguished 
  

   by 
  the 
  smaller 
  size, 
  the 
  small 
  but 
  plainly 
  visible 
  setae 
  of 
  the 
  elytra, 
  

   the 
  less 
  acutely 
  arched 
  apex 
  of 
  the 
  rostrum, 
  the 
  well-defined 
  elytral 
  

   striae, 
  and 
  the 
  color 
  pattern. 
  

  

  EUPAGODERES 
  ARGENTATUS 
  (LeConte) 
  

  

  Figure 
  61 
  

   Ophryastes 
  argentatus 
  LeConte, 
  1853, 
  p. 
  444. 
  

  

  Robust, 
  inflated, 
  color 
  varying 
  from 
  pearly 
  gray 
  (with 
  intervals 
  

   2, 
  4, 
  and 
  6 
  brownish) 
  to 
  almost 
  uniform 
  black. 
  The 
  usual 
  speci- 
  

   mens 
  are 
  whitish 
  or 
  gray, 
  strongly 
  and 
  irregularly 
  marked 
  with 
  black. 
  

   The 
  form 
  and 
  convexity 
  vary, 
  but 
  in 
  general 
  the 
  sides 
  of 
  the 
  body 
  

   diverge 
  rather 
  regularly 
  back 
  from 
  the 
  thorax, 
  and 
  the 
  body 
  is 
  widest 
  

   at 
  about 
  the 
  apical 
  one- 
  third. 
  Rostrum 
  strongly 
  arched 
  above, 
  very 
  

   stout, 
  not 
  constricted 
  at 
  base 
  beneath, 
  widened 
  apically; 
  trisulcate, 
  

   the 
  median 
  sulcus 
  moderately 
  deep, 
  sharply 
  defined, 
  sometimes 
  

   extended 
  onto 
  the 
  front 
  for 
  a 
  short 
  distance; 
  lateral 
  sulci 
  subparallel, 
  

   curved, 
  convergent 
  basally. 
  Median 
  impression 
  between 
  head 
  and 
  

   rostrum 
  usually 
  very 
  well 
  marked. 
  Pronotum 
  four-fifths 
  to 
  five- 
  

   sevenths 
  wider 
  than 
  long, 
  widest 
  at 
  apical 
  one-fifth, 
  coarsely 
  and 
  

   moderately 
  closely 
  punctate. 
  Elytral 
  striae 
  consisting 
  of 
  rows 
  of 
  

   large, 
  round, 
  deep 
  disconnected 
  punctures; 
  intervals 
  nearly 
  flat; 
  

   setae 
  very 
  minute, 
  white. 
  Legs 
  fairly 
  robust, 
  anterior 
  tibiae 
  denticu- 
  

   late 
  within, 
  posterior 
  tibiae 
  subtruncate 
  or 
  rounded 
  at 
  apex. 
  

  

  Figure 
  61. 
  — 
  Eupagoderes 
  argentatus 
  (LeConte): 
  a, 
  Female 
  genital 
  tube, 
  dorsal 
  view; 
  

   b, 
  female 
  genital 
  tube, 
  ventral 
  view; 
  c, 
  female 
  genital 
  tube, 
  lateral 
  view; 
  d, 
  receptaculum 
  

   seminis; 
  e, 
  median 
  lobe 
  of 
  male 
  genitalia, 
  dorsal 
  and 
  lateral 
  views. 
  

  

  