﻿56 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  ACYRTUS, 
  new 
  genus 
  

  

  Genotype. 
  — 
  Sicyases 
  ntbiginosus 
  Poey. 
  

  

  This 
  new 
  genus 
  is 
  characterized 
  by 
  the 
  lack 
  of 
  a 
  dorsal 
  curve 
  of 
  the 
  

   premaxillary 
  groove 
  along 
  upper 
  lip 
  over 
  the 
  snout 
  tip 
  in 
  conjunction 
  

   with 
  the 
  incisorlike 
  teeth 
  of 
  the 
  lower 
  jaw 
  having 
  four 
  minute 
  joints. 
  

   It 
  may 
  be 
  distinguished 
  from 
  all 
  other 
  genera 
  of 
  American 
  Gobieso- 
  

   cidae 
  by 
  the 
  key 
  on 
  page 
  49. 
  Other 
  characters 
  are 
  those 
  of 
  the 
  

   genotype. 
  

  

  Named 
  Acyrtus 
  in 
  reference 
  to 
  the 
  absence 
  of 
  the 
  dorsal 
  curve 
  of 
  the 
  

   premaxillary 
  groove 
  over 
  front 
  of 
  snout 
  so 
  common 
  in 
  all 
  other 
  Ameri- 
  

   can 
  clingfishes 
  except 
  Bimicola, 
  to 
  which 
  this 
  new 
  genus 
  is 
  most 
  closely 
  

   related. 
  

  

  ACYRTUS 
  RUBIGINOSUS 
  (Poey) 
  

  

  Sicyases 
  rubiginosus 
  Poet, 
  Synopsis 
  piscium 
  Cubensium, 
  p. 
  391, 
  1868 
  (Palmasola, 
  

  

  Cuba); 
  Enumeratio 
  piscium 
  Cubensium, 
  p. 
  124, 
  1876 
  (Cuba). 
  — 
  Jordan, 
  

  

  EvEBMANN, 
  and 
  Clabk, 
  Rep. 
  U. 
  S. 
  Comm.. 
  Fish, 
  for 
  1928, 
  pt. 
  2, 
  p. 
  490, 
  1930 
  

  

  (Matanzas, 
  Cuba). 
  

   Sicyases 
  carneus 
  Poey, 
  Synopsis 
  piscium 
  Cubensium, 
  p. 
  392, 
  1868 
  (Palmasola, 
  

  

  Cuba) 
  ; 
  Enumeratio 
  piscium 
  Cubensium, 
  p. 
  124, 
  1876 
  (Cuba). 
  — 
  Joed 
  an, 
  

  

  EvERMANN, 
  and 
  Clark, 
  Rep 
  U. 
  S. 
  Comm. 
  Fish, 
  for 
  1928, 
  pt. 
  2, 
  p. 
  490, 
  1930 
  

  

  (Matanzas, 
  Cuba). 
  

   Sicyases 
  carneus 
  Voey—S. 
  rubiginosus 
  Poey, 
  Longley, 
  Carnegie 
  Inst. 
  Washington 
  

  

  Year 
  Book, 
  No. 
  33, 
  p. 
  271, 
  1934. 
  

   fArbaciosa 
  sp. 
  Beebe 
  and 
  Tee-Van, 
  Zoologica, 
  vol. 
  10, 
  No. 
  1, 
  p. 
  252, 
  1928 
  (Lamentin 
  

  

  Reef, 
  Port-au-Prince 
  Bay, 
  Haiti). 
  

   Gobiesox 
  rubiginosus 
  Jordan 
  and 
  Evermann, 
  Rep. 
  U. 
  S. 
  Comm. 
  Fish 
  and 
  Fish. 
  

  

  for 
  1895, 
  App., 
  p. 
  492, 
  1896 
  (Matanzas, 
  Cuba) 
  ; 
  U. 
  S. 
  Nat. 
  Mus. 
  Bull. 
  47, 
  pt. 
  3, 
  

  

  p. 
  2337, 
  1898 
  (Cuba). 
  

   Oobiesox 
  carneus 
  Jordan 
  and 
  Evermann, 
  Rep. 
  U. 
  S. 
  Comm. 
  Fish 
  and 
  Fish, 
  for 
  

  

  1895, 
  App., 
  p. 
  492, 
  1896 
  (Matanzas, 
  Cuba) 
  ; 
  U. 
  S. 
  Nat. 
  Mus. 
  Bull. 
  47, 
  pt. 
  3, 
  p. 
  

  

  2337, 
  1898 
  (Matanzas). 
  

   Gobiesox 
  (Rimicola) 
  beryllimis 
  Hildeibrand 
  and 
  Ginsbttbg, 
  Bull. 
  U. 
  S. 
  Bur. 
  Fish., 
  

  

  vol. 
  42, 
  p. 
  213, 
  fig. 
  5, 
  1927 
  (Key 
  West, 
  Boca 
  Chica, 
  Fla. 
  ) 
  . 
  

   Rimicola 
  beryllinus 
  Jordan, 
  Evermann, 
  and 
  Clark, 
  Rep. 
  U. 
  S. 
  Comm. 
  F^sh. 
  for 
  

  

  1928, 
  pt. 
  2, 
  p. 
  490, 
  1930 
  (Key 
  West). 
  

  

  Remarks. 
  — 
  An 
  examination 
  of 
  the 
  type 
  of 
  hei^yllinus 
  indicates 
  that 
  

   the 
  incisorlike 
  teeth 
  at 
  the 
  front 
  of 
  the 
  lower 
  jaw 
  have 
  four 
  minute 
  

   points, 
  although 
  the 
  middle 
  ones 
  are 
  worn 
  down 
  a 
  little. 
  The 
  teeth 
  

   along 
  with 
  other 
  characters 
  in 
  the 
  description 
  of 
  heryUmus 
  are 
  in 
  need 
  

   of 
  rechecking, 
  but 
  the 
  type 
  appears 
  to 
  have 
  been 
  dried 
  out 
  sometime 
  

   and 
  is 
  not 
  in 
  first-class 
  condition. 
  Hildebrand 
  and 
  Ginsburg's 
  draw- 
  

   ing, 
  "figure 
  5," 
  has 
  the 
  lower 
  rays 
  of 
  the 
  pectoral 
  fin 
  twice 
  too 
  long 
  and 
  

   the 
  disk 
  is 
  not 
  quite 
  long 
  enough. 
  The 
  fin 
  rays 
  were 
  not 
  correctly 
  

   counted 
  in 
  the 
  original 
  description. 
  

  

  Material 
  examined.— 
  Cvba 
  : 
  U.S.N.M. 
  Nos. 
  82581 
  and 
  82582, 
  totaling 
  

   12 
  specimens. 
  Florida 
  : 
  U.S.N.M. 
  Nos. 
  87533 
  (holotype 
  of 
  beryllimis) 
  

   and 
  116936, 
  one 
  specimen. 
  

  

  Range. 
  — 
  Florida 
  Keys 
  and 
  West 
  Indies. 
  , 
  

  

  