﻿MELOLONTHIDiE 
  OF 
  THE 
  UNITED 
  STATES. 
  24-3 
  

  

  A 
  very 
  common 
  and 
  through 
  Atlantic 
  America 
  widely 
  extended 
  species, 
  em- 
  

   bracing 
  several 
  races, 
  to 
  which, 
  however, 
  no 
  definite 
  characters 
  can 
  be 
  given. 
  The 
  

   color 
  varies 
  according 
  to 
  the 
  maturity 
  of 
  the 
  specimen, 
  but 
  usually 
  the 
  whole 
  under 
  

   surface 
  is 
  ferruginous 
  ; 
  the 
  last 
  ventral 
  segment 
  of 
  the 
  male 
  has 
  a 
  broad 
  round 
  impres- 
  

   sion, 
  and 
  the 
  penultimate 
  is 
  transversely 
  impressed 
  and 
  elevated. 
  The 
  tooth 
  of 
  the 
  

   claws 
  of 
  the 
  tarsi 
  in 
  the 
  male 
  of 
  the 
  normal 
  race 
  is 
  one-half 
  shorter 
  than 
  the 
  apical 
  

   part 
  ; 
  the 
  club 
  of 
  the 
  antenna) 
  is 
  as 
  long 
  as 
  the 
  stem. 
  In 
  the 
  female 
  the 
  club 
  is 
  small, 
  

   and 
  the 
  tooth 
  of 
  the 
  claw 
  is 
  as 
  long 
  as 
  the 
  apical 
  portion. 
  The 
  elytra 
  are 
  sometimes 
  

   very 
  finely 
  rugous 
  without 
  punctures, 
  sometimes 
  very 
  finely 
  and 
  sometimes 
  quite 
  dis- 
  

   tinctly 
  punctured 
  ; 
  the 
  costse 
  are 
  usually 
  obvious. 
  The 
  sides 
  of 
  the 
  thorax 
  are 
  some- 
  

   times 
  slightly, 
  sometimes 
  very 
  strongly 
  rounded 
  ; 
  the 
  punctures 
  are 
  distinct 
  but 
  not 
  

   large 
  nor 
  dense, 
  sometimes 
  a 
  smooth 
  dorsal 
  line 
  is 
  left. 
  The 
  clypeus 
  is 
  usually 
  dis- 
  

   tinctly, 
  though 
  slightly 
  emarginate, 
  but 
  in 
  some 
  specimens 
  the 
  undulation 
  is 
  hardly 
  

   perceptible. 
  

  

  The 
  principal 
  races 
  are 
  as 
  follows 
  : 
  

  

  a. 
  Body 
  nearly 
  cylindrical, 
  thorax 
  much 
  rounded 
  on 
  the 
  sides; 
  elytra 
  finely 
  and 
  densely 
  punctulute 
  ; 
  

   male 
  with 
  long 
  tooth 
  on 
  the 
  ungues. 
  L. 
  consimilis 
  Lee. 
  Agassiz' 
  Lake 
  Sup. 
  22G. 
  

  

  /?. 
  Body 
  slightly 
  ovate, 
  thorax 
  with 
  the 
  sides 
  oblique 
  and 
  rounded, 
  narrower 
  than 
  the 
  elytra; 
  male 
  with 
  

   ungual 
  tooth 
  short. 
  

  

  y. 
  Body 
  ovate, 
  thorax 
  strongly 
  punctured 
  with 
  the 
  sides 
  oblique 
  and 
  rounded, 
  shorter 
  than' 
  usual, 
  nar- 
  

   rower 
  than 
  the 
  elytra, 
  which 
  are 
  strongly 
  punctured. 
  L. 
  unxia 
  Lee. 
  Agass. 
  Lake 
  Sup. 
  226. 
  A. 
  brevicollia 
  

   Blanch. 
  Cat. 
  Col. 
  Mus. 
  Paris, 
  132. 
  

  

  S. 
  Thorax 
  narrower 
  than 
  the 
  elytra, 
  almost 
  angulated 
  on 
  the 
  sides, 
  finely 
  sparsely 
  punctured, 
  elytra 
  

   moderately 
  punctured 
  ; 
  claws 
  of 
  the 
  lriale 
  with 
  long 
  tooth. 
  A. 
  bn 
  vicollis 
  Burm. 
  Lamell. 
  2, 
  2d, 
  322. 
  

  

  s. 
  Body 
  hardly 
  ovate, 
  thorax 
  slightly 
  narrower 
  than 
  the 
  elytra, 
  much 
  rounded 
  on 
  the 
  sides, 
  elytra 
  dis- 
  

   tinctly 
  and 
  sometimes 
  strongly 
  punctured; 
  claws 
  of" 
  male 
  with 
  a 
  loug 
  tooth. 
  Aneylonycha 
  puncticollis 
  

   Blanch. 
  Cat. 
  Col. 
  Mus. 
  Par. 
  133. 
  

  

  r 
  r 
  Larger, 
  body 
  subcylindrical, 
  thorax 
  very 
  much 
  rounded 
  on 
  the 
  sides, 
  elytra 
  finely 
  and 
  densely 
  rugu- 
  

   lose 
  and 
  slightly 
  punctulate. 
  Male 
  with 
  a 
  long 
  tooth 
  on 
  the 
  claws. 
  Rhizotrogus 
  Drakii 
  Kirby, 
  Fauna 
  

   Bor. 
  Am. 
  133. 
  

  

  Ancyl. 
  profunda 
  and 
  uniformis 
  Blanch. 
  Cat. 
  Col. 
  Mus. 
  Paris 
  132, 
  133, 
  

   which 
  are 
  considered 
  by 
  Burmeister 
  to 
  be 
  varieties 
  of 
  this 
  species, 
  appear 
  by 
  descrip- 
  

   tion 
  so 
  different 
  that 
  I 
  am 
  not 
  warranted 
  in 
  so 
  placing 
  them, 
  though 
  the 
  characters 
  

   given 
  are 
  not 
  such 
  as 
  to 
  enable 
  them 
  to 
  be 
  distinctly 
  recognized. 
  The 
  first 
  mentioned 
  

   is 
  perhaps 
  allied 
  to 
  L. 
  K 
  n 
  o 
  c 
  h 
  i 
  i 
  . 
  

  

  A 
  male 
  specimen 
  from 
  Wisconsin, 
  belonging 
  by 
  form 
  and 
  sculpture 
  to 
  y, 
  shows 
  a 
  

   remarkable 
  sexual 
  peculiarity 
  in 
  the 
  penultimate 
  abdominal 
  segment, 
  the 
  elevation 
  on 
  

   which 
  is 
  very 
  sharply 
  defined 
  and 
  quite 
  curved; 
  in 
  all 
  the 
  other 
  males 
  I 
  have 
  seen 
  

   the 
  elevation 
  is 
  straight, 
  although 
  sometimes 
  very 
  slightly 
  emarginate. 
  

  

  17. 
  L. 
  eephalica, 
  fusco-ferruginea, 
  convexa, 
  oblongo-ovata, 
  nitida, 
  capite 
  baud 
  confluenter 
  punctato, 
  

  

  utrinque 
  parce 
  breviter 
  piloso, 
  clypeo 
  paruui 
  emargiuato, 
  thorace 
  antrorsum 
  angustato 
  fortius 
  baud 
  

  

  (53 
  

  

  