﻿37-4 
  Mr. 
  G. 
  A. 
  Boulenger 
  on 
  new 
  

  

  Dorsal 
  17-19 
  (4 
  unbranched), 
  equally 
  distant 
  from 
  occiput 
  

   and 
  from 
  caudal, 
  its 
  base 
  equal 
  to 
  its 
  distance 
  from 
  adipose 
  

   fin, 
  which 
  is 
  not 
  scaly. 
  Anal 
  11-12 
  (3-4 
  unbranched), 
  its 
  

   base 
  much 
  shorter 
  than 
  that 
  of 
  dorsal. 
  Pectoral 
  about 
  | 
  

   length 
  of 
  head. 
  Caudal 
  deeply 
  forked, 
  lobes 
  pointed. 
  

   Caudal 
  peduncle 
  as 
  long 
  as 
  deep 
  or 
  a 
  little 
  longer 
  than 
  deep. 
  

   Scales 
  55-G2 
  If-??, 
  5i-6 
  between 
  lateral 
  line 
  and 
  root 
  of 
  

   ventral. 
  Yellow, 
  speckled 
  with 
  brown 
  above 
  the 
  lateral 
  line, 
  

   silvery 
  white 
  below; 
  a 
  more 
  or 
  less 
  distinct 
  blackish 
  band 
  

   may 
  be 
  present 
  along 
  the 
  lateral 
  line 
  ; 
  dorsal 
  and 
  caudal 
  fins 
  

   lemon-yellow, 
  the 
  former 
  with 
  a 
  black 
  spot 
  in 
  the 
  upper 
  

   third 
  of 
  its 
  anterior 
  part. 
  

  

  Total 
  length 
  70 
  mm. 
  

  

  Many 
  specimens 
  were 
  obtained 
  in 
  the 
  Geba 
  and 
  Culufl 
  

   Rivers. 
  

  

  A 
  very 
  distinct 
  species, 
  the 
  smallest 
  and 
  most 
  slender 
  of 
  

   the 
  genus, 
  further 
  remarkable 
  for 
  the 
  absence 
  of 
  scales 
  on 
  the 
  

   adipose 
  dorsal 
  fin. 
  

  

  Nannocharax 
  ansorgii. 
  

  

  Depth 
  of 
  body 
  3§ 
  to 
  4£ 
  times 
  in 
  total 
  length, 
  length 
  of 
  

   head 
  3£ 
  to 
  3f 
  times. 
  Head 
  deeper 
  than 
  broad 
  ; 
  snout 
  as 
  

   long 
  as 
  or 
  a 
  little 
  shorter 
  than 
  eye, 
  which 
  is 
  3 
  to 
  3^ 
  times 
  in 
  

   length 
  of 
  head 
  and 
  equals 
  interorbital 
  width. 
  Dorsal 
  III 
  9-10, 
  

   originating 
  a 
  little 
  in 
  front 
  of 
  base 
  of 
  ventral, 
  situated 
  at 
  

   equal 
  distance 
  from 
  centre 
  of 
  eye 
  and 
  from 
  root 
  of 
  caudal, 
  

   longest 
  ray 
  a 
  little 
  shorter 
  than 
  head. 
  Anal 
  III 
  7-8. 
  Pec- 
  

   toral 
  f 
  to 
  £ 
  length 
  of 
  head, 
  not 
  reaching 
  root 
  of 
  ventral. 
  

   Caudal 
  forked, 
  with 
  pointed 
  lobes. 
  Caudal 
  peduncle 
  1^ 
  times 
  

   as 
  long 
  as 
  deep. 
  Scales 
  40-45 
  J^, 
  4-4| 
  between 
  lateral 
  line 
  

   and 
  ventral. 
  Back 
  straw-yellow, 
  with 
  numerous 
  fine 
  dark 
  

   longitudinal 
  lines 
  ; 
  a 
  lateral 
  series 
  of 
  large 
  black 
  spots 
  on 
  the 
  

   lateral 
  line, 
  usually 
  confluent 
  into 
  a 
  broad 
  band 
  terminating 
  

   on 
  the 
  caudal 
  fin 
  ; 
  bases 
  of 
  dorsal, 
  ventral, 
  and 
  caudal 
  fins 
  

   pale 
  orange. 
  

  

  Total 
  length 
  43 
  mm. 
  

  

  Several 
  specimens 
  from 
  the 
  Geba 
  and 
  Culufi 
  Hi 
  vers. 
  

  

  Allied 
  to 
  iV. 
  tcenia, 
  Blgr., 
  and 
  N. 
  dimidiatus, 
  Pellegr. 
  

  

  Barbus 
  macrops. 
  

  

  Depth 
  of 
  body 
  equal 
  to 
  length 
  of 
  head, 
  3^ 
  to 
  3^ 
  times 
  in 
  

   total 
  length. 
  Snout 
  rounded, 
  much 
  shorter 
  than 
  eye, 
  which 
  

   is 
  2| 
  to 
  2§ 
  times 
  in 
  length 
  of 
  head; 
  interorbital 
  width 
  2f 
  

  

  