﻿282 
  Mr. 
  G. 
  Lewis 
  on 
  new 
  Species 
  of 
  Histerida?. 
  

  

  Pachycrcerus 
  arabicus, 
  Lewis, 
  is 
  less 
  convex 
  and 
  more 
  oval 
  

   than 
  modestus, 
  with 
  the 
  three 
  abbreviated 
  elytral 
  stria? 
  more 
  

   lightly 
  impressed 
  and 
  shortened 
  also 
  posteriorly. 
  The 
  fore- 
  

   head 
  is 
  more 
  convex 
  within 
  the 
  area 
  of 
  the 
  stria, 
  the 
  prono- 
  

   tum 
  is 
  more 
  transverse 
  and 
  less 
  punctured 
  in 
  the 
  centre, 
  and 
  

   the 
  prosternal 
  stria? 
  are 
  wider 
  apart, 
  not 
  quite 
  so 
  parallel, 
  and 
  

   the 
  interstice 
  between 
  them 
  is 
  more 
  truncate 
  in 
  front. 
  

  

  Ccelocrcera 
  nitida, 
  Lewis. 
  

  

  This 
  species 
  should 
  be 
  placed 
  in 
  Phelister 
  until 
  the 
  genus 
  is 
  

   more 
  fully 
  revised 
  ; 
  the 
  insect 
  is 
  allied 
  to 
  P. 
  circulifrons, 
  Mars., 
  

   from 
  Senegal. 
  It 
  differs 
  especially 
  from 
  the 
  latter 
  by 
  the 
  

   fourth 
  elytral 
  stria 
  being 
  complete 
  and 
  the 
  fifth 
  reaching 
  the 
  

   middle. 
  The 
  sutural 
  stria 
  is 
  similar 
  in 
  both 
  insects. 
  

  

  Ulster 
  africanus, 
  n. 
  sp. 
  

  

  Ovatus, 
  parum 
  convexus, 
  niger, 
  nitidus 
  ; 
  fronte 
  plana, 
  stria 
  iutegra 
  

   antice 
  subrecta 
  ; 
  pronoto 
  striis 
  duabus 
  pone 
  oculos 
  coalescentibus 
  ; 
  

   elytris 
  striis 
  l 
  a 
  -5 
  m 
  integris, 
  6 
  a 
  basi 
  abbreviata, 
  7 
  a 
  magis 
  longa 
  ; 
  pro- 
  

   pygidio 
  pygidioque 
  dense 
  et 
  parum 
  grosse 
  punctatis 
  ; 
  mesosterno 
  

   subemarginato, 
  stria 
  raarginali 
  iutegra 
  ; 
  tibiis 
  anticis 
  3-dentatis. 
  

  

  Long. 
  7| 
  millim. 
  

  

  The 
  figure 
  of 
  Hister 
  afer 
  7 
  Paykull, 
  given 
  in 
  his 
  monograph, 
  

   tab. 
  xiii. 
  f. 
  vi., 
  agrees 
  well 
  with 
  this 
  species, 
  except 
  that 
  in 
  

   africanus 
  the 
  thorax 
  is 
  impunctate, 
  the 
  propygidium 
  and 
  

   pygidium 
  are 
  densely 
  punctate, 
  and 
  the 
  fifth 
  dorsal 
  stria 
  is 
  

   longer 
  and 
  the 
  sixth 
  shorter. 
  Paykull's 
  species 
  came 
  from 
  

   Guinea, 
  mine 
  is 
  labelled 
  by 
  Mr. 
  Bates 
  (to 
  whom 
  I 
  am 
  much 
  

   indebted 
  for 
  a 
  unique 
  example) 
  " 
  River 
  Lujenda, 
  East 
  Africa." 
  

   Both 
  the 
  species 
  mentioned 
  above 
  have 
  the 
  elytral 
  stria? 
  

   arranged 
  on 
  a 
  similar 
  plan 
  to 
  Contipus 
  didymostrius, 
  Mars., 
  

   and 
  Hister 
  mtesa, 
  Ancey, 
  but 
  the 
  last 
  has 
  the 
  mesosternum 
  

   very 
  curiously 
  sculptured. 
  The 
  punctuation 
  of 
  the 
  pygidium 
  

   and 
  the 
  form 
  of 
  the 
  mesosternum 
  in 
  H. 
  africanus 
  and 
  Alechowi 
  } 
  

   Schmidt, 
  are 
  almost 
  identical. 
  

  

  Hab. 
  E. 
  Africa. 
  

  

  Hister 
  sulcipygus, 
  n. 
  sp. 
  

  

  Ovalis, 
  convexus, 
  niger, 
  nitidus, 
  Isevis 
  ; 
  fronte 
  antice 
  biimpressa, 
  stria 
  

   elevata 
  antice 
  recta 
  ; 
  mandibulis 
  bidentatis, 
  extus 
  marginatis 
  ; 
  

   pronoto 
  striis 
  2 
  lateralibus 
  validis 
  aute 
  basin 
  terminatis 
  ; 
  elytris 
  

   striis 
  l 
  a 
  -3 
  m 
  integris, 
  4 
  a 
  apicali 
  brevi 
  vel 
  obsoleta 
  ; 
  propygidio 
  pygi- 
  

   dioque 
  sat 
  dense 
  et 
  grosse 
  punctatis 
  ; 
  pygidio 
  utrinque 
  profunde 
  

   sulcato 
  ; 
  prosterno 
  haud 
  striato 
  ; 
  mesosterno 
  antice 
  parum 
  lato, 
  

  

  