﻿Mr. 
  W. 
  F. 
  Kirby 
  on 
  new 
  Species 
  q/Thasmidae. 
  503 
  

  

  Hob. 
  Dominica 
  (March 
  1889). 
  

  

  A 
  remarkable 
  insect, 
  allied 
  to 
  P. 
  dijformipes, 
  Serv., 
  but 
  

   much 
  stouter 
  and 
  abundantly 
  distinct. 
  

  

  Pseudobacteria 
  longiceps. 
  

  

  Long. 
  corp. 
  98 
  millim. 
  ; 
  thor. 
  36; 
  mesoth. 
  21 
  ; 
  metath. 
  7 
  ; 
  

   abd. 
  50; 
  fem. 
  ant. 
  24; 
  interm. 
  18 
  ; 
  post. 
  26; 
  lat. 
  mesoth. 
  3. 
  

  

  Female. 
  — 
  Reddish 
  brown, 
  indistinctly 
  mottled 
  and 
  granu- 
  

   lated 
  with 
  blackish 
  above, 
  which 
  makes 
  it 
  look 
  darker 
  ; 
  head 
  

   longer 
  than 
  the 
  mesothorax, 
  with 
  a 
  black 
  groove 
  in 
  the 
  

   median 
  line 
  ; 
  antennas 
  blackish, 
  indistinctly 
  annulated 
  with 
  

   paler 
  ; 
  thorax 
  strongly 
  longitudinally 
  carinated, 
  especially 
  on 
  

   the 
  sides 
  and 
  beneath 
  ; 
  legs 
  paler 
  than 
  the 
  upper 
  surface 
  of 
  

   the 
  body, 
  indistinctly 
  ringed 
  with 
  blackish 
  ; 
  the 
  coxa3, 
  the 
  

   tips 
  of 
  the 
  hind 
  tibia?, 
  and 
  the 
  last 
  four 
  joints 
  of 
  their 
  tarsi 
  

   more 
  distinctly 
  black 
  (front 
  tarsi 
  broken 
  off). 
  Mesothorax 
  

   with 
  a 
  moderate-sized 
  black 
  spot 
  at 
  the 
  extremity 
  above 
  ; 
  

   hinder 
  lobe 
  of 
  the 
  metathorax 
  extremely 
  short. 
  Abdomen 
  

   with 
  segments 
  one 
  to 
  six 
  of 
  nearly 
  equal 
  length, 
  the 
  neigh- 
  

   bourhood 
  of 
  the 
  suture 
  of 
  the 
  fourth 
  and 
  fifth 
  segments 
  and 
  

   the 
  last 
  three 
  segments 
  paler 
  than 
  the 
  rest. 
  The 
  segments 
  

   are 
  of 
  about 
  equal 
  width 
  throughout 
  as 
  far 
  as 
  the 
  sixth, 
  

   which 
  narrows 
  from 
  its 
  base 
  to 
  its 
  extremity 
  ; 
  the 
  last 
  three 
  

   are 
  much 
  narrower 
  than 
  the 
  others, 
  and 
  only 
  about 
  two 
  fifths 
  

   as 
  long, 
  being 
  not 
  much 
  longer 
  than 
  broad. 
  Cerci 
  rather 
  

   small. 
  

  

  Hob. 
  Santa 
  Lucia. 
  

  

  Abrachia, 
  nov. 
  gen. 
  

  

  Female. 
  — 
  Apterous, 
  elongated, 
  smooth. 
  

  

  Head 
  long, 
  oval 
  ; 
  antenna) 
  22-jointed, 
  the 
  first 
  joint 
  large, 
  

   broadest 
  at 
  the 
  tip, 
  the 
  second 
  narrower, 
  not 
  much 
  longer 
  

   than 
  broad, 
  the 
  third 
  narrower, 
  cylindrical, 
  much 
  longer 
  

   than 
  broad, 
  and 
  followed 
  by 
  a 
  closely 
  connected 
  series 
  of 
  

   transverse 
  cheese-shaped 
  joints, 
  which 
  become 
  longer 
  and 
  

   more 
  distinctly 
  separated 
  towards 
  the 
  extremity. 
  Prothorax 
  

   hardly 
  as 
  long 
  as 
  the 
  head, 
  with 
  a 
  transverse 
  crescent-shaped 
  

   impression 
  on 
  the 
  centre. 
  Mesothorax 
  about 
  half 
  as 
  long 
  

   again 
  as 
  the 
  metathorax, 
  which 
  latter 
  is 
  marked 
  with 
  a 
  trans- 
  

   verse 
  suture. 
  Abdomen 
  cylindrical, 
  the 
  joints 
  (except 
  the 
  

   last 
  two) 
  much 
  longer 
  than 
  broad. 
  Operculum 
  extremely 
  

   long, 
  cerci 
  &c. 
  short. 
  Legs 
  carinated, 
  femora 
  spiued, 
  and 
  four 
  

   hind 
  tibiae 
  lobed. 
  

  

  A 
  singular 
  genus, 
  with 
  much 
  shorter 
  antennas 
  than 
  any 
  

  

  