﻿836 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  [48] 
  

  

  156.— 
  CHARACODON 
  1 
  Giintber. 
  

  

  555. 
  Characodon 
  furcidens 
  Jordan 
  & 
  Gilbert. 
  P. 
  

  

  157.— 
  ADINIA 
  Girard. 
  

  

  556. 
  Adinia 
  multifasciata 
  2 
  Girard. 
  S. 
  (5456.) 
  

  

  158.— 
  FUNDULUS 
  Lac6pede. 
  (158) 
  

   § 
  Hydrargyra. 
  

  

  557. 
  Fundulus 
  majalis 
  3 
  Walbaum. 
  N. 
  (532) 
  

  

  558. 
  Fundulus 
  similis 
  Baird 
  & 
  Girard. 
  S. 
  (534) 
  

  

  559. 
  Fundulus 
  parvipinnis 
  Girard. 
  C. 
  P. 
  (536) 
  

  

  § 
  Fundulus. 
  

  

  560. 
  Fundulus 
  zebrinus 
  4 
  Jordan 
  & 
  Gilbert. 
  Vsw. 
  (530) 
  

  

  1 
  Characodon 
  Giintber. 
  

  

  (Giinther, 
  Cat. 
  Fish. 
  Brit. 
  Mus., 
  VI, 
  1866, 
  308; 
  type 
  Characodon 
  lateralis 
  Giintber.) 
  

  

  This 
  genus 
  differs 
  from 
  Cyprinodon, 
  chiefly 
  in 
  the 
  presence 
  of 
  a 
  small 
  band 
  of 
  villi- 
  

   forrn 
  teeth 
  behind 
  the 
  incisors. 
  The 
  incisors 
  are 
  bicuspid 
  or 
  Y-shaped, 
  and 
  tbe 
  ver- 
  

   tical 
  fins 
  are 
  longer 
  than 
  in 
  Cyprinodon 
  ; 
  fresh 
  waters 
  of 
  Mexico 
  and 
  Central 
  America 
  ; 
  

   two 
  species 
  known. 
  (Xdpa%, 
  a 
  sbarp 
  stake; 
  56uv, 
  tooth.) 
  Characodon 
  furcidens 
  Jor- 
  

   dan 
  & 
  Gilbert, 
  Proc. 
  U. 
  S. 
  Nat 
  Mus., 
  1862, 
  354 
  ; 
  streams 
  tributary 
  to 
  the 
  Gulf 
  of 
  Cali- 
  

   fornia, 
  and 
  southward 
  ; 
  abundant. 
  

  

  § 
  2 
  The 
  group 
  Adinia, 
  defined 
  on 
  page 
  891 
  in 
  the 
  Synopsis, 
  may 
  be 
  recognized 
  as 
  a 
  

   distinct 
  genus, 
  intermediate 
  between 
  Cyprinodon 
  and 
  Fundulus, 
  having 
  the 
  form 
  of 
  

   body 
  and 
  restricted 
  gill 
  openings 
  of 
  the 
  former 
  and 
  the 
  dentition 
  of 
  the 
  latter. 
  The 
  

   single 
  species 
  (Fundulus 
  xenicus 
  Jor. 
  & 
  Gilb.) 
  may 
  stand 
  as 
  Adinia 
  multifasciata. 
  

  

  3 
  Fundulus 
  swampina, 
  a 
  doubtful 
  species 
  probably 
  based 
  on 
  a 
  confusion 
  of 
  several 
  

   species, 
  is 
  here 
  omitted. 
  

  

  4 
  Fundulus 
  zebrinus 
  is 
  thus 
  redescribed 
  by 
  Professor 
  Gilbert 
  (Bull. 
  Washburn 
  Lab. 
  

   Nat. 
  Hist., 
  1, 
  1884, 
  15), 
  from 
  specimens 
  taken 
  at 
  Ellis, 
  Kans. 
  : 
  

  

  "Head 
  and 
  body 
  shaped 
  much 
  as 
  in 
  Fundulus 
  similis, 
  but 
  the 
  snout 
  somewhat 
  less 
  

   elongate. 
  Width 
  of 
  preorbital 
  about 
  6| 
  in 
  length 
  of 
  head 
  ; 
  eye 
  moderate, 
  4 
  to 
  4£ 
  

   in 
  head, 
  If 
  in 
  interorbital 
  width; 
  posterior 
  margin 
  of 
  orbit 
  in 
  middle 
  of 
  length 
  of 
  

   bead 
  ; 
  teeth 
  in 
  both 
  jaws 
  in 
  a 
  villiform 
  band, 
  with 
  the 
  external 
  series 
  much 
  enlarged; 
  

   interorbital 
  width 
  2£ 
  in 
  bead 
  ; 
  snout 
  3f 
  . 
  

  

  " 
  Branchiostegals 
  5. 
  

  

  " 
  Dorsal 
  fin 
  long 
  and 
  ratner 
  ow, 
  the 
  base 
  longer 
  and 
  the 
  rays 
  bigher 
  in 
  males 
  than 
  

   in 
  females; 
  origin 
  of 
  dorsal 
  nearly 
  equidistant 
  between 
  snout 
  and 
  margin 
  of 
  caudal, 
  

   slightly 
  nearer 
  the 
  snout 
  in 
  males, 
  and 
  nearer 
  end 
  of 
  caudal 
  in 
  females 
  ; 
  base 
  of 
  dorsal 
  

   in 
  males 
  6 
  to 
  6-J 
  in 
  total 
  length, 
  the 
  highest 
  dorsal 
  ray 
  about 
  half 
  head 
  ; 
  in 
  females 
  

   the 
  base 
  is 
  7£ 
  in 
  total 
  length. 
  Origin 
  of 
  anal 
  opposite 
  that 
  of 
  dorsal 
  in 
  males, 
  behind 
  

   it 
  in 
  females 
  ; 
  in 
  tbe 
  latter 
  the 
  anal 
  is 
  sharply 
  angulated, 
  the 
  anterior 
  rays 
  more 
  than 
  

   thrice 
  the 
  height 
  of 
  the 
  posterior, 
  and 
  more 
  than 
  two-thirds 
  length 
  of 
  head. 
  In 
  males 
  

   the 
  margins 
  of 
  both 
  dorsal 
  and 
  anal 
  fins 
  are 
  evenly 
  rounded, 
  the 
  anal 
  is 
  the 
  highest, 
  

   its 
  rays 
  beset 
  with 
  minute 
  white 
  prickles. 
  Oviduct 
  forming 
  a 
  low 
  sheath 
  along 
  base 
  

   of 
  anterior 
  half 
  of 
  anal. 
  Pectorals 
  not 
  reaching 
  base 
  of 
  ventrals, 
  equaling 
  distance 
  

   from 
  snout 
  to 
  preopercular 
  margin. 
  Ventrals 
  about 
  reaching 
  vent. 
  Caudal 
  truncate, 
  

   li 
  in 
  head. 
  

  

  " 
  Scales 
  very 
  small, 
  in 
  about 
  60 
  oblique 
  series'from 
  opercle 
  to 
  base 
  of 
  caudal 
  ; 
  about 
  

   21 
  in 
  an 
  oblique 
  series 
  from 
  vent 
  upwards 
  to 
  middle 
  of 
  back 
  ; 
  no 
  enlarged 
  humeral 
  

   scale. 
  In 
  males 
  the 
  margins 
  of 
  scales 
  are 
  rough 
  with 
  minute 
  tubercles. 
  

  

  " 
  Head 
  3| 
  to 
  3| 
  in 
  length; 
  depth 
  4| 
  to 
  4|. 
  D. 
  14 
  or 
  15 
  ; 
  A. 
  13 
  or 
  14. 
  L. 
  3 
  inches. 
  

   " 
  Color: 
  Greenish 
  above, 
  sides 
  and 
  below 
  silvery-white, 
  the 
  sides 
  tinged 
  with 
  sul- 
  

  

  