﻿On 
  a 
  new 
  Genus 
  of 
  Isopoda 
  from 
  Ahi'iers. 
  561 
  

  

  and 
  not 
  (as 
  altered 
  in 
  MS. 
  to 
  some 
  of 
  my 
  correspondents) 
  

   C. 
  crassicorne. 
  

  

  Dr. 
  W. 
  T. 
  Caiman, 
  F.L.S., 
  who 
  most 
  kindly 
  assisted 
  me 
  

   in 
  examining 
  specimens 
  at 
  the 
  British 
  Musenm, 
  agrees 
  with 
  

   me 
  in 
  being 
  unable 
  to 
  perceive 
  any 
  difference 
  of 
  importance 
  

   between 
  C. 
  bonellii 
  and 
  C. 
  acherusicum. 
  

  

  References. 
  

  

  (i) 
  G. 
  O. 
  Sars. 
  'Crustacea 
  of 
  Norway,' 
  vol. 
  i., 
  Ampliipoda, 
  p. 
  616, 
  

   pis. 
  220, 
  221. 
  

  

  (2) 
  A. 
  M, 
  Norman. 
  Crust. 
  Devon 
  and 
  Cornwall, 
  p. 
  9-5. 
  

  

  (3) 
  HoEK. 
  Tijdschr. 
  Nederlands. 
  Dierk. 
  Vereen. 
  vol. 
  iv. 
  1879, 
  pp. 
  Ho- 
  

  

  lla 
  

  

  (4) 
  Della 
  Valle. 
  F. 
  F1. 
  Neapel, 
  v. 
  20, 
  p. 
  364, 
  t. 
  viii. 
  figs. 
  24, 
  31, 
  &c. 
  

  

  (5) 
  Stebbing. 
  ' 
  Das 
  Tierreich,' 
  Gammaridea, 
  p. 
  692. 
  

  

  (6) 
  Chevreux. 
  E6sult. 
  Camp. 
  Monaco 
  (Amph. 
  de 
  ' 
  L'Hirondelle 
  '), 
  

  

  p. 
  109. 
  

  

  (7) 
  Walker. 
  Trans. 
  Liverpool 
  Biol. 
  Soc. 
  vol. 
  xii. 
  1898, 
  p. 
  172. 
  

  

  LXIir. 
  — 
  Description 
  of 
  a 
  new 
  Genus 
  of 
  Terrestrial 
  Isopodi 
  

   from 
  Algiers. 
  By 
  Walter 
  E. 
  Collinge, 
  M.Sc, 
  F.L.S., 
  

   F.E.S. 
  

  

  [Plate 
  XXIII.] 
  

  

  Some 
  short 
  time 
  ago 
  Dr. 
  Leonard 
  Doncaster 
  very 
  kindly 
  

   entrusted 
  to 
  me 
  for 
  examination 
  and 
  identification 
  a 
  small 
  

   collection 
  of 
  terrestrial 
  Isopoda 
  from 
  the 
  University 
  Museum 
  

   of 
  Zoology, 
  Cambridge. 
  With 
  one 
  exception 
  all 
  the 
  specimens 
  

   were 
  European. 
  One 
  tube 
  contained 
  two 
  examples 
  of 
  a 
  very 
  

   striking 
  and 
  beautiful 
  species 
  from 
  Algiers, 
  and 
  from 
  a 
  naked- 
  

   eye 
  examination 
  I 
  at 
  first 
  thought 
  they 
  were 
  examples 
  of 
  a 
  

   large 
  species 
  of 
  Niamhia, 
  Budde-Lund 
  *, 
  as 
  they 
  exhiijited 
  

   the 
  peculiar 
  large 
  cavity 
  at 
  the 
  junction 
  of 
  the 
  flagellum 
  

   with 
  the 
  peduncle 
  of 
  the 
  antennae 
  ; 
  a 
  more 
  minute 
  examina- 
  

   tion, 
  however, 
  proves 
  them 
  to 
  be 
  quite 
  distinct 
  from 
  that 
  

   genus, 
  although 
  distantly 
  allied. 
  

  

  Paraniamhia 
  tuberculata, 
  gQn. 
  et 
  sp. 
  n. 
  

  

  Body 
  (PI. 
  XXII 
  r. 
  fig. 
  1) 
  oblong-oval, 
  dorsal 
  face 
  slightly 
  

   convex, 
  with 
  numerous 
  large 
  tubercles 
  on 
  the 
  head 
  and 
  

  

  * 
  " 
  Land-Isopoden,'' 
  Jen. 
  Denkschrift. 
  Gesell. 
  1909, 
  Bd. 
  xiv. 
  p. 
  59. 
  

   Ann. 
  (fc 
  il/ay. 
  K 
  Hist. 
  Ser. 
  8. 
  Vol. 
  xiii. 
  38 
  

  

  