﻿466 
  

  

  Ki:\ 
  ISION 
  i>r 
  TIIIC 
  ISLATERID 
  1. 
  

  

  One 
  specimen, 
  Vermont, 
  Prof. 
  Adams. 
  Body 
  black, 
  with 
  very 
  little 
  lustre, 
  covered 
  with 
  

   brownish 
  hair. 
  Head 
  very 
  densely 
  punctured; 
  antennas 
  with 
  the 
  third 
  joint 
  triangular, 
  

   about 
  twice 
  as 
  long 
  as 
  the 
  second, 
  but 
  not 
  more 
  than 
  half 
  the 
  size 
  of 
  the 
  fourth 
  : 
  last 
  joint 
  not 
  

   constricted. 
  Thorax 
  not 
  longer 
  than 
  wide, 
  narrowed 
  gradually 
  from 
  the 
  base, 
  and 
  broadly 
  

   rounded 
  on 
  the 
  sides, 
  moderately 
  convex, 
  very 
  densely 
  punctured, 
  punctures 
  becoming»con- 
  

   flueut 
  towards 
  the 
  sides: 
  posterior 
  angles 
  less 
  elongate 
  than 
  usual, 
  elytra 
  slightly 
  nar- 
  

   rowed 
  from 
  the 
  very 
  base, 
  more 
  strongly 
  narrowed 
  posteriorly, 
  pale 
  dirty 
  yellow, 
  with 
  a 
  

   large 
  apical 
  black 
  blotch, 
  the 
  anterior 
  limits 
  of 
  which 
  are 
  badly 
  defined, 
  and 
  which 
  ex- 
  

   tends 
  farther 
  along 
  the 
  side 
  than 
  on 
  the 
  suture: 
  strice 
  deep, 
  strongly 
  punctured, 
  interstices 
  

   convex, 
  moderately 
  and 
  finely 
  punctured. 
  

  

  This 
  species 
  differs 
  from 
  the 
  following 
  not 
  only 
  by 
  the 
  apical 
  blotch 
  of 
  the 
  elytra 
  ex- 
  

   tending 
  to 
  the 
  apex 
  and 
  side, 
  but 
  by 
  its 
  more 
  densely 
  punctured 
  thorax, 
  with 
  shorter 
  posterior 
  

   angles, 
  and 
  by 
  the 
  less 
  parallel 
  elytra: 
  the 
  last 
  is 
  probably 
  a 
  sexual 
  character. 
  

  

  12. 
  E. 
  apicatus, 
  niger, 
  helvo-pubescens, 
  thorace 
  confertiui 
  punctato, 
  elytris 
  locte 
  sanguineis, 
  

   plaga 
  utrinque 
  apicali 
  oblonga 
  nigra, 
  striis 
  profundis 
  punctatis, 
  interstitiis 
  convexis, 
  disperse 
  punc- 
  

   tatis, 
  antennis 
  piccis 
  (femince) 
  articulo 
  3'° 
  secundo 
  fere 
  duplo 
  longiore. 
  Long. 
  -35 
  — 
  -46. 
  

  

  Say, 
  Trans. 
  Am. 
  Phil. 
  Soc. 
  G, 
  170. 
  

  

  Ampedus 
  melanopygus 
  tierm. 
  Zeitschr. 
  5, 
  161. 
  

  

  Northern 
  portions 
  of 
  the 
  United 
  States. 
  I 
  have 
  only 
  females 
  of 
  this 
  species, 
  but 
  from 
  

   the 
  relation 
  which 
  the 
  joints 
  bear 
  to 
  each 
  other, 
  the 
  male 
  probably 
  has 
  antenna; 
  like 
  the 
  

   preceding 
  species; 
  the 
  apical 
  black 
  spot 
  of 
  the 
  elytra 
  is 
  well 
  defined, 
  and 
  does 
  not 
  touch 
  

   either 
  the 
  side 
  or 
  suture. 
  

  

  13. 
  E. 
  phoenicopterus, 
  niger, 
  helvo-pubescens, 
  thorace 
  confertim 
  punctato, 
  elytris 
  sanguiueo- 
  

   ferrugineis, 
  striis 
  punctatis, 
  interstitiis 
  fere 
  planis 
  ruguloso-punctatis, 
  antennis 
  vix 
  piceis, 
  (feminas) 
  

   articulo 
  3'° 
  secundo 
  fere 
  duplo 
  longiore. 
  Long. 
  *43 
  — 
  *5. 
  

  

  Ampedus 
  phoenicopterus 
  Germ. 
  Zeitschr. 
  5, 
  161. 
  

  

  Oregon 
  and 
  Lake 
  Superior. 
  Having 
  compared 
  specimens, 
  I 
  have 
  been 
  convinced 
  of 
  

   their 
  identity. 
  This 
  species 
  is 
  very 
  closely 
  allied 
  to 
  the 
  last, 
  but 
  the 
  colour 
  of 
  the 
  elytra 
  

   is 
  more 
  obscure, 
  and 
  without 
  spots: 
  the 
  thorax 
  is 
  more 
  convex 
  and 
  more 
  rounded 
  on 
  the 
  

   sides: 
  the 
  difference 
  in 
  the 
  depth 
  of 
  the 
  elytral 
  striae 
  and 
  the 
  punctuation 
  of 
  the 
  interstices 
  

   is 
  not 
  as 
  obvious 
  as 
  would 
  appear 
  in 
  Germar's 
  description: 
  I 
  find 
  that 
  there 
  is 
  some 
  

   variation 
  in 
  this 
  respect 
  in 
  different 
  specimens, 
  though 
  the 
  interstices 
  are 
  never 
  as 
  convex 
  

   as 
  in 
  the 
  preceding. 
  

  

  14. 
  E. 
  luctuosus, 
  ater, 
  griseo-pubescens, 
  thorace 
  confertim 
  punctato, 
  postice 
  canaliculato, 
  

   elytris 
  striis 
  profundis 
  punctatis, 
  interstitiis 
  confertim 
  rugose 
  punctulatis, 
  antennis 
  articulo 
  3'° 
  secundo 
  

   vix 
  longiore, 
  pedibuscpie 
  piceis. 
  Long. 
  -43 
  — 
  -5. 
  

  

  Lake 
  Superior, 
  at 
  Eagle 
  Harbour. 
  This 
  species 
  is 
  extremely 
  similar 
  to 
  the 
  next, 
  but 
  the 
  

   third 
  joint 
  of 
  the 
  antennas 
  in 
  both 
  sexes 
  is 
  much 
  shorter 
  than 
  the 
  fourth 
  and 
  hardly 
  longer 
  

   than 
  the 
  second. 
  The 
  elytra 
  are 
  less 
  tapering, 
  being 
  almost 
  parallel 
  anteriorly, 
  as 
  in 
  the 
  

   preceding 
  two 
  species. 
  The 
  thorax 
  is 
  narrowed 
  from 
  the 
  base, 
  and 
  moderately 
  rounded 
  

   on 
  the 
  sides: 
  in 
  the 
  female 
  it 
  is 
  a 
  little 
  broader 
  than 
  long, 
  in 
  the 
  male 
  its 
  diameters 
  are 
  

   about 
  equal. 
  

  

  