﻿REVISION 
  OF 
  AMERICAN 
  CLINGFISHES 
  — 
  SCHULTZ 
  49 
  

  

  KEY 
  TO 
  THE 
  GENERA 
  AND 
  SPECIES 
  OF 
  AMERICAN 
  GOBIESOCIDAE 
  

  

  1'/. 
  Groove 
  bt'twivn 
  tip 
  of 
  snout 
  iiiul 
  upiht 
  lip 
  of 
  prt'iuaxilluries 
  extonding 
  around 
  

   front 
  of 
  snout 
  and 
  not 
  forming 
  a 
  convex 
  curve 
  dorsally 
  over 
  tip 
  of 
  snout; 
  

   width 
  of 
  middle 
  of 
  upper 
  lip 
  narrow, 
  about 
  the 
  same 
  as 
  hiterally, 
  and 
  ap- 
  

   proximately 
  equal 
  to 
  width 
  of 
  pupil; 
  gill 
  membranes 
  attached 
  opposite 
  

   tliird 
  to 
  fifth 
  upper 
  pectoral 
  fin 
  rays; 
  axial 
  flap 
  of 
  skin 
  behind 
  pectoral 
  fin 
  

   with 
  its 
  upi>er 
  edge 
  attached 
  at 
  midbase 
  of 
  pectoral 
  fin 
  or 
  below 
  midbase; 
  

   fleshy 
  pad 
  on 
  outer 
  pectoral 
  base 
  present 
  only 
  ventrally, 
  without 
  a 
  free 
  

   margin 
  posteriorly 
  and 
  enlarged 
  or 
  swollen 
  at 
  lower 
  posterior 
  corner 
  of 
  

   l)ectoral 
  fin 
  base: 
  lower 
  first 
  to 
  fifth 
  pectoral 
  raj's 
  short, 
  about 
  half 
  length 
  

   of 
  longest 
  pectoral 
  ray, 
  eighth 
  and 
  ninth 
  much 
  longer 
  than 
  lower 
  pectoral 
  

   rays; 
  anal 
  rays 
  G 
  to 
  8; 
  dorsal 
  rays 
  G 
  or 
  7 
  (all 
  rudiments 
  counted 
  as 
  

   one 
  ray). 
  

   2rt. 
  Incisorlike 
  teeth 
  at 
  front 
  of 
  lower 
  jaw 
  with 
  4 
  minute 
  points,^ 
  these 
  at 
  front 
  

   of 
  upper 
  jaw 
  mostly 
  conical 
  ; 
  each 
  jaw 
  with 
  1 
  or 
  2 
  inner 
  rows 
  of 
  minute 
  

   conical 
  teeth 
  ; 
  axial 
  fiap 
  of 
  skin 
  behind 
  pectoral 
  fin 
  attached 
  at 
  lower 
  part 
  

   of 
  pectoral 
  fin 
  base; 
  anal 
  origin 
  a 
  little 
  behind 
  a 
  vertical 
  line 
  through 
  

   dorsal 
  origin 
  ; 
  greatest 
  depth 
  of 
  body 
  5V_> 
  to 
  6Vj, 
  length 
  of 
  head 
  3 
  to 
  3%. 
  

   greatest 
  width 
  of 
  head 
  4i/j 
  to 
  5, 
  length 
  of 
  disk 
  5 
  to 
  5Vj, 
  all 
  in 
  standard 
  

   length 
  ; 
  length 
  of 
  disk 
  about 
  equal 
  to 
  distance 
  from 
  tip 
  of 
  snout 
  to 
  front 
  

   of 
  disk 
  ; 
  pectoral 
  rays 
  about 
  1!) 
  to 
  21 
  ; 
  color 
  when 
  alive 
  green 
  or 
  reddish, 
  

   with 
  or 
  without 
  light 
  spots 
  {Acyrtus, 
  new 
  genus) 
  (Florida 
  Keys 
  and 
  

  

  West 
  Indies) 
  Acyrtus 
  rubiginosus 
  (Poey) 
  

  

  26. 
  Incisorlike 
  teeth 
  at 
  front 
  of 
  lower 
  jaw 
  with 
  smooth 
  tips 
  ; 
  middle 
  front 
  teeth 
  

   of 
  upper 
  jaw 
  conical 
  ; 
  teeth 
  in 
  inner 
  rows 
  of 
  both 
  jaws 
  shorter, 
  smaller, 
  

   and 
  conical 
  : 
  axial 
  fiap 
  of 
  skin 
  behind 
  pectoral 
  fin 
  attached 
  opposite 
  middle 
  

   of 
  pectoral 
  base; 
  greatest 
  depth 
  of 
  body 
  8 
  or 
  9, 
  length 
  of 
  head 
  3Vj 
  to 
  3%, 
  

   greatest 
  wiilth 
  of 
  head 
  5, 
  length 
  of 
  disk 
  5Vo, 
  all 
  in 
  standard 
  length 
  ; 
  anal 
  

   origin 
  a 
  little 
  in 
  advance 
  of 
  dorsal 
  origin 
  ; 
  interorbital 
  space 
  3^/^ 
  in 
  head, 
  

   eye 
  1V> 
  in 
  interorbital 
  space; 
  length 
  of 
  disk 
  about 
  equal 
  to 
  caudal 
  

   I)eduncle; 
  lower 
  pectoral 
  rays 
  shorter, 
  second 
  and 
  third 
  from 
  bottom 
  about 
  

   half 
  length 
  of 
  longest 
  pectoral 
  fin 
  rays 
  ; 
  pectoral 
  fin 
  rays 
  about 
  IG 
  or 
  17 
  

   (Rimicola 
  Jordan 
  and 
  Evermann) 
  (Todos 
  Santos 
  Bay, 
  Baja 
  California 
  

   to 
  Monterey 
  Bay 
  and 
  west 
  coast 
  of 
  Vancouver 
  Island, 
  British 
  Colum- 
  

   bia) 
  Rimicola 
  eigenmanni 
  (Gilbert) 
  

  

  lb. 
  Tip 
  of 
  snout 
  formed 
  by 
  premaxillaries, 
  which 
  are 
  much 
  wider 
  at 
  middle 
  of 
  

  

  snout 
  than 
  laterally, 
  groove 
  arched 
  dorsally 
  over 
  tip 
  of 
  snout 
  ; 
  axial 
  Hap 
  of 
  

  

  skin 
  behind 
  p<'Ctoral 
  fin 
  with 
  its 
  upper 
  etlge 
  attached 
  much 
  above 
  midbase 
  of 
  

  

  this 
  fin 
  ; 
  lower 
  first 
  to 
  seventh 
  pectoral 
  fin 
  rays 
  not 
  shortened, 
  about 
  as 
  long 
  

  

  as 
  eighth 
  or 
  ninth 
  from 
  bottonj. 
  

  

  3fl. 
  Anterior 
  twth 
  of 
  lower 
  Jaw 
  trlfid 
  incisors, 
  trifid 
  tips 
  usually 
  evident, 
  except 
  

  

  middle 
  2 
  or 
  3 
  sometimes 
  worn 
  off 
  smooth 
  although 
  1 
  or 
  2 
  of 
  more 
  laterally 
  

  

  placed 
  incisors 
  at 
  front 
  of 
  lower 
  jaw 
  always 
  trifid. 
  

  

  An. 
  CJlll 
  membrane 
  attached 
  opjiosite 
  third 
  to 
  fifth 
  jx-cloral 
  lln 
  rays; 
  front 
  

  

  teeth 
  of 
  upper 
  Jaw 
  smooth 
  liiiped 
  incl.sors 
  (sometimes 
  fiattened-cor)l- 
  

  

  fonn) 
  ; 
  iront 
  of 
  both 
  Jaws 
  with 
  1 
  or 
  2 
  inner 
  rows 
  of 
  small 
  conical 
  teeth 
  

  

  behind 
  outer 
  row 
  of 
  enlarged 
  Incl.sorlike 
  teeth, 
  sometimes 
  these 
  inner 
  

  

  rows 
  apparently 
  represented 
  by 
  oidy 
  2 
  or 
  3 
  teeth 
  ; 
  fleshy 
  pad 
  on 
  outer 
  

  

  base 
  of 
  pectoral 
  fin 
  with 
  free 
  posterior 
  margin 
  ending 
  a 
  little 
  below 
  

  

  attachment 
  of 
  gill 
  membraneH 
  ; 
  greatest 
  width 
  of 
  head 
  3, 
  length 
  of 
  head 
  

  

  ' 
  SoiiiPtiiiKfl 
  the 
  middle 
  two 
  tpctli 
  arc 
  worn 
  down 
  n<'nily 
  HnirMdli. 
  jih 
  In 
  tlio 
  type 
  of 
  '/. 
  

   hrrtillinun 
  Illldclirand 
  and 
  OlnxliiirK. 
  

  

  