﻿LameUicorn 
  Beetles. 
  61 
  

  

  5. 
  Apalonychus* 
  Westw. 
  Trans. 
  Ent. 
  Soc. 
  iv. 
  168 
  

   {Trichops, 
  Dej. 
  Cat.). 
  

  

  III. 
  Geotrupini. 
  Epimera 
  metatlioracis 
  libera. 
  Antennce 
  

   11-articulatae. 
  Abdomen 
  segmentis 
  ventralibus 
  6. 
  

  

  Genera 
  Geotrupes, 
  Lethrus, 
  Odonlceus, 
  Bolboceras, 
  Atliyreus. 
  

  

  Obs. 
  — 
  Ample 
  details 
  of 
  the 
  generic 
  structure 
  of 
  the 
  last 
  three 
  

   genera 
  are 
  given 
  in 
  the 
  plates 
  illustrating 
  my 
  three 
  papers 
  on 
  the 
  

   Atltyrel 
  and 
  Bolbocerata 
  in 
  the 
  twentieth 
  and 
  twenty-first 
  volumes 
  

   of 
  the 
  Linnsean 
  Transactions. 
  Monographs 
  of 
  the 
  genera 
  Athyreus 
  

   and 
  Bolboceras 
  have 
  also 
  been 
  published 
  by 
  Dr. 
  Klug 
  in 
  the 
  Nova 
  

   Acta. 
  

  

  /3. 
  Epimera 
  of 
  the 
  metathorax 
  concealed. 
  

  

  IV. 
  CopRiDEs. 
  Antennce 
  9 
  vel 
  8-articulatse. 
  Abdomen 
  seg- 
  

   mentis 
  ventralibus 
  sex 
  connatis. 
  Tibice 
  posticae 
  calcare 
  

   singulo. 
  

  

  V. 
  Aphodiid.e. 
  Antennce 
  9-articulatae. 
  Abdomen 
  segmentis 
  

   ventralibus 
  6 
  liberis. 
  Tibice 
  posticae 
  spinis 
  terminalibus 
  

   binis. 
  

  

  Obs. 
  — 
  The 
  genera 
  Euparia, 
  AEgialia, 
  Chiron, 
  Ryparus, 
  Dej., 
  

   Corythodcrus, 
  Kl., 
  and 
  Ch(Xtopisthes, 
  Westw., 
  are 
  assigned 
  to 
  this 
  

   family. 
  

  

  VI. 
  ORPHNiDyE. 
  Antennce 
  lO-articulatse. 
  Abdomen 
  segmentis 
  

   ventralibus 
  6. 
  TibicB 
  posticae 
  spinis 
  terminalibus 
  binis. 
  

  

  Genera 
  1. 
  Hypalus, 
  Dej. 
  (Geobius, 
  Brulle, 
  Laporte, 
  and 
  Westw. 
  

   Trans. 
  Ent. 
  Soc. 
  iv. 
  ITlf). 
  

  

  2. 
  Orphnus, 
  MacLeay, 
  Westw. 
  Trans. 
  Ent. 
  Soc. 
  iv. 
  175. 
  

  

  3. 
  Triodontiis, 
  Westw. 
  Trans. 
  Ent. 
  Soc. 
  iv. 
  172. 
  

  

  4. 
  ASgidhm, 
  Dej., 
  Westw. 
  Trans. 
  Ent. 
  Soc. 
  iv. 
  173; 
  

  

  and 
  

  

  5. 
  Ochodceus, 
  including 
  Codocera, 
  Eschsch. 
  (Stomphax, 
  

  

  Fischer 
  ; 
  Psephus, 
  MacLeay, 
  MS,^ 
  Kirby 
  and 
  

   Spence, 
  Intr. 
  iii. 
  678). 
  

   B. 
  Abdomen 
  with 
  five 
  ventral 
  semisegments. 
  

  

  " 
  ChcBtodusI 
  basalis," 
  from 
  a 
  specimen 
  in 
  IMr. 
  Melly's 
  collection, 
  of 
  which 
  the 
  

   head 
  was 
  warning. 
  Dr. 
  Erichson, 
  having 
  perfect 
  individuals 
  from 
  Peru, 
  gives 
  the 
  

   following 
  as 
  ils 
  generic 
  characters 
  : 
  — 
  " 
  Dicraeodon, 
  Er. 
  MandibnltE 
  extus 
  acute 
  

   bideotataj. 
  Tibia: 
  graciles 
  posteriores 
  extus 
  medio 
  obsolete 
  transversim 
  carinatae, 
  

   anlice 
  extus 
  crenulataj, 
  apice 
  acute 
  bidentataj. 
  Unguicuti 
  simplices." 
  Conspect. 
  

   Ins. 
  Col. 
  Peru, 
  Arch. 
  f. 
  Naturg. 
  13 
  Jahrg. 
  1 
  Bd. 
  i. 
  104. 
  

  

  * 
  Erichson 
  writes 
  this 
  name 
  Hapalonychus, 
  

  

  t 
  Erichson 
  adopts 
  Dejean's 
  uncharacterized 
  name 
  instead 
  of 
  Geobius, 
  the 
  latter 
  

   being 
  previously 
  used 
  for 
  a 
  genus 
  of 
  Carabid<E 
  by 
  Dejean. 
  

  

  