﻿32 
  On 
  Freshwater 
  Entomostraca 
  from 
  Egypt 
  &c. 
  

  

  (27) 
  Cyclops 
  hyalinus, 
  Rehberg. 
  

  

  A 
  few 
  specimens 
  found 
  in 
  pools 
  near 
  the 
  Pyramids. 
  

  

  (28) 
  Cyclops 
  emini, 
  Mrazek. 
  

  

  This 
  Central- 
  African 
  species 
  was 
  found 
  in 
  collections 
  from 
  

   the 
  Blue 
  Nile, 
  but 
  a 
  few 
  specimens 
  were 
  also 
  taken 
  near 
  the 
  

   Pyramids 
  of 
  Gizeh. 
  

  

  (29) 
  Cyclops 
  dybowskii, 
  Lande. 
  

  

  Pools 
  by 
  the 
  Pyramids 
  and 
  at 
  Dahchour. 
  

  

  (30) 
  Cyclops 
  planus, 
  Gurney. 
  

  

  This 
  species, 
  which 
  is 
  common 
  in 
  Algeria 
  and 
  Tuuisia, 
  

   occurred 
  in 
  collections 
  made 
  near 
  the 
  Pyramids 
  of 
  Gizeh 
  and 
  

   at 
  Kostamneh 
  in 
  Nubia. 
  

  

  (31) 
  Cyclops 
  varicans, 
  Sars. 
  

   Zoological 
  Gardens 
  at 
  Cairo. 
  

  

  (32) 
  Cyclops 
  bicolor, 
  Sars. 
  

  

  Zoological 
  Gardens 
  and 
  near 
  the 
  Pyramids. 
  

  

  (33) 
  Cyclops 
  serrulatus, 
  Fischer. 
  

  

  Specimens 
  of 
  the 
  typical 
  form 
  occurred 
  in 
  the 
  Zoological 
  

   Gardens, 
  at 
  Lecht, 
  and 
  near 
  the 
  Pyramids, 
  but 
  the 
  form 
  

   varius, 
  Lillj., 
  was 
  also 
  found 
  in 
  a 
  pool 
  in 
  the 
  Gardens. 
  

  

  The 
  distinction 
  between 
  the 
  various 
  forms 
  of 
  Cyclops 
  

   serrulatus 
  seems 
  to 
  me 
  of 
  doubtful 
  value. 
  The 
  presence 
  or 
  

   absence 
  of 
  hairs 
  in 
  the 
  hyaline 
  membrane 
  of 
  the 
  first 
  an- 
  

   tennas 
  is 
  often 
  exceedingly 
  difficult 
  to 
  ascertain 
  with 
  cer- 
  

   tainty, 
  and 
  the 
  remaining 
  characters 
  are 
  variable 
  and 
  difficult 
  

   to 
  estimate. 
  The 
  so-called 
  hairs 
  in 
  the 
  membrane 
  are, 
  I 
  

   believe, 
  not 
  hairs, 
  but 
  a 
  striation 
  due 
  to 
  a 
  wrinkling 
  of 
  the 
  

   membrane. 
  

  

  (34) 
  Cyclops 
  prasinus, 
  Fischer. 
  

   Zoological 
  Gardens 
  at 
  Cairo. 
  

  

  (35) 
  Cyclops 
  phaleratus, 
  Koch. 
  

  

  One 
  specimen 
  only 
  was 
  found 
  in 
  the 
  Zoological 
  Gardens. 
  

  

  