﻿new 
  species 
  of 
  holophthalmous 
  Ascalaphiclce. 
  513 
  

  

  a 
  broad 
  central 
  blackish 
  longitudinal 
  band, 
  glaucous 
  bluish 
  in 
  the 
  

   attemiated 
  apical 
  portion. 
  "Wings 
  vitreous 
  ; 
  the 
  inner 
  margin 
  

   dilated 
  before 
  the 
  termination 
  of 
  the 
  cubiti 
  ; 
  anal 
  angle 
  of 
  anterior 
  

   rounded, 
  thickened, 
  not 
  followed 
  by 
  an 
  excision 
  : 
  neuration 
  rather 
  

   open, 
  blackish, 
  but 
  all 
  the 
  principal 
  longitudinal 
  nervures 
  are 
  

   yellowish 
  ; 
  pterostigma 
  small, 
  nearly 
  vitreous, 
  but 
  with 
  three 
  

   yellowish 
  nervules, 
  of 
  which 
  the 
  first 
  is 
  furcate 
  ; 
  about 
  35 
  costal 
  

   nervules 
  before 
  the 
  pterostigma 
  ; 
  post-stigmatical 
  area 
  with 
  three 
  

   rows 
  of 
  hexagonal 
  or 
  pentagonal 
  cellules, 
  those 
  on 
  the 
  costal 
  mar- 
  

   gin 
  the 
  smallest 
  ; 
  four 
  rows 
  of 
  cellules 
  between 
  the 
  lower 
  cubitus 
  

   and 
  the 
  inner 
  margin. 
  Length 
  of 
  body, 
  about 
  35 
  mm. 
  (distorted). 
  

   Expanse 
  of 
  wings, 
  82 
  mm. 
  Length 
  of 
  anterior 
  wing, 
  89 
  mm. 
  ; 
  

   greatest 
  breadth, 
  11 
  mm. 
  Length 
  of 
  posterior 
  wing, 
  38 
  mm. 
  

  

  Hah. 
  Darjeeling 
  {H. 
  J. 
  Ehues, 
  July, 
  1886) 
  ; 
  one 
  ? 
  in 
  

   my 
  collection, 
  kindly 
  given 
  to 
  me 
  by 
  Mr. 
  Pascoe. 
  

  

  Agreeing 
  in 
  general 
  form 
  and 
  structure 
  with 
  the 
  typical 
  

   I. 
  decrepitus, 
  Wlk. 
  

  

  It 
  cannot 
  be 
  identical 
  with 
  the 
  lost 
  " 
  Ascalaphus 
  

   (Ha'ploglenius) 
  obscurus,^'Westw. 
  (Cab. 
  Or. 
  Ent.), 
  also 
  an 
  

   Indian 
  species, 
  which, 
  according 
  to 
  the 
  short 
  diagnosis, 
  

   should 
  be 
  very 
  much 
  smaller, 
  differently 
  marked 
  on 
  the 
  

   body, 
  and 
  having 
  the 
  claws 
  longer 
  than 
  the 
  tarsi 
  (in 
  

   I. 
  Ehvesii 
  they 
  are 
  scarcely 
  longer 
  than 
  the 
  last 
  tarsal 
  

   joint), 
  &c. 
  

  

  Idricerus 
  japonicus, 
  n. 
  sp. 
  

   Antennae 
  blackish-piceous, 
  the 
  club 
  deep 
  black. 
  Body 
  black. 
  

   Head 
  above 
  and 
  between 
  the 
  antennae 
  clothed 
  with 
  dense 
  black 
  

   pilosity, 
  which 
  becomes 
  cinereous 
  on 
  the 
  face; 
  clypeus, 
  labrum, 
  and 
  

   lower 
  orbits 
  yellow. 
  Eyes 
  bronzy 
  (perhaps 
  reddish 
  or 
  purplish 
  in 
  

   life). 
  Thorax 
  with 
  black 
  pilosity 
  above, 
  and 
  cinereous 
  on 
  the 
  sides 
  

   and 
  beneath 
  (often 
  nearly 
  wholly 
  cinereous 
  in 
  the 
  5). 
  Legs 
  shining 
  

   black, 
  reddish 
  at 
  the 
  jmiction 
  of 
  femora 
  and 
  tibiae 
  ; 
  spurs 
  of 
  the 
  

   posterior 
  tibias 
  as 
  long 
  as 
  the 
  first 
  two 
  tarsal 
  joints. 
  Abdomen 
  

   glaucous 
  beneath, 
  with 
  black 
  segmental 
  divisions 
  ; 
  above 
  it 
  is 
  black, 
  

   with 
  short 
  concolorous 
  hairs, 
  and 
  in 
  some 
  individuals 
  there 
  is 
  a 
  

   reddish 
  mark 
  at 
  the 
  sides 
  of 
  the 
  basal 
  segmental 
  divisions 
  : 
  the 
  

   abdomen 
  is 
  comparatively 
  slender 
  in 
  the 
  ^ 
  , 
  but 
  enormously 
  stout 
  

   in 
  the 
  J 
  (perhaps 
  only 
  before 
  the 
  eggs 
  are 
  laid) 
  : 
  in 
  the 
  ^ 
  there 
  

   are 
  no 
  prominent 
  anal 
  appendages, 
  but 
  the 
  ventral 
  surface 
  ends 
  in 
  

   a 
  small 
  triangular 
  plate. 
  Wings 
  having 
  the 
  costal 
  and 
  inner 
  mar- 
  

   gins 
  nearly 
  parallel, 
  the 
  anterior 
  pair 
  not 
  appendiculated, 
  but 
  the 
  

   anal 
  angle 
  is 
  prominent 
  ; 
  vitreous, 
  the 
  subcostal 
  area 
  often 
  slightly 
  

   infuscated 
  (in 
  very 
  adult 
  individuals 
  the 
  wings 
  are 
  sometimes 
  

  

  