﻿62 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

  

  fleshy 
  pad 
  on 
  lower 
  pectoral 
  base 
  ending 
  opposite 
  the 
  eleventh 
  ray 
  

   from 
  dorsal 
  edge 
  of 
  pectoral 
  fin; 
  the 
  middle 
  incisors 
  of 
  both 
  jaws 
  

   much 
  wider 
  than 
  the 
  adjoining 
  pair 
  and 
  those 
  on 
  lower 
  jaw 
  longer, 
  

   but 
  the 
  two 
  middle 
  pairs 
  of 
  upper 
  jaw 
  about 
  the 
  same 
  length; 
  the 
  

   interorbital 
  space 
  slightly 
  concave 
  ; 
  both 
  nostrils 
  close 
  in 
  front 
  of 
  eye, 
  

   the 
  anterior 
  one 
  with 
  a 
  small 
  fringed 
  flap 
  arising 
  on 
  its 
  posterior 
  edge. 
  

  

  Table 
  2. 
  — 
  Measurements 
  oj 
  the 
  two 
  species 
  of 
  Sicyases, 
  in 
  hundredths 
  of 
  the 
  

  

  standard 
  length 
  

  

  hildebrandi] 
  

  

  Characters 
  

  

  Holotype 
  

  

  U.S.N.M. 
  Nos. 
  

  

  77512 
  77512 
  77512 
  83029 
  

  

  Standard 
  length 
  (in 
  millimeters) 
  

  

  Length 
  of 
  head 
  to 
  -upper 
  edge 
  of 
  gill 
  opening 
  

  

  Length 
  of 
  head 
  to 
  tip 
  of 
  opercular 
  spine 
  

  

  Greatest 
  depth 
  of 
  body 
  

  

  Greatest 
  width 
  of 
  head 
  

  

  Least 
  depth 
  of 
  caudal 
  peduncle 
  

  

  Length 
  of 
  caudal 
  peduncle 
  

  

  Length 
  of 
  snout 
  

  

  Diameter 
  of 
  eye 
  

  

  Width 
  of 
  bony 
  interorbital 
  

  

  Postorbital 
  length 
  of 
  head 
  to 
  upper 
  edge 
  of 
  gill 
  open- 
  

  

  mg 
  

  

  Postorbital 
  length 
  of 
  head 
  to 
  tip 
  of 
  opercular 
  spine.. 
  

  

  Length 
  of 
  disk 
  

  

  Distance 
  from 
  base 
  of 
  last 
  dorsal 
  ray 
  to 
  midcaudal 
  

  

  base 
  

  

  Disk 
  to 
  anus 
  

  

  Anus 
  to 
  anal 
  origin 
  

  

  Snout 
  tip 
  to 
  dorsal 
  origin 
  

  

  Snout 
  tip 
  to 
  anal 
  origin 
  -. 
  

  

  Snout 
  tip 
  to 
  center 
  of 
  anus. 
  

  

  Length 
  of 
  base 
  of 
  dorsal 
  fin 
  

  

  Length 
  of 
  base 
  of 
  anal 
  fin 
  

  

  Longest 
  ray 
  of 
  dorsal 
  fin 
  

  

  Longest 
  ray 
  of 
  anal 
  fin 
  — 
  

  

  Longest 
  ray 
  of 
  caudal 
  fin 
  

  

  Longest 
  ray 
  of 
  pectoral 
  fin 
  

  

  Tip 
  of 
  snout 
  to 
  disk 
  

  

  Origin 
  of 
  dorsal 
  to 
  upper 
  edge 
  of 
  gill 
  opening 
  

  

  69 
  

  

  28.3 
  

  

  33.3 
  

  

  14.5 
  

  

  27.5 
  

  

  7.82 
  

   13.8 
  

   10.6 
  

  

  7.54 
  

   12.2 
  

  

  14.9 
  

   19.1 
  

   35.6 
  

  

  21.7 
  

   3.91 
  

   19.6 
  

   59.4 
  

   72.5 
  

   52.6 
  

   19.5 
  

   14.2 
  

   12.5 
  

   11.7 
  

   24.5 
  

   14.5 
  

   13.3 
  

   36.0 
  

  

  59 
  

  

  32.2 
  

  

  35.6 
  

  

  14.9 
  

  

  29.1 
  

  

  8.30 
  

   13.9 
  

   11.7 
  

  

  7.63 
  

   12.2 
  

  

  16.4 
  

   20.2 
  

   36.4 
  

  

  20.7 
  

   3.90 
  

   23.4 
  

   62.7 
  

   76.3 
  

   53.2 
  

   17.0 
  

   11.4 
  

   12.2 
  

   11.2 
  

   23.6 
  

   15.3 
  

   14.2 
  

   37.3 
  

  

  78.5 
  

   33.8 
  

   37.6 
  

   15.9 
  

   29.9 
  

  

  7.77 
  

   10.8 
  

   12.2 
  

  

  8.02 
  

   14.0 
  

  

  16.7 
  

   21.9 
  

  

  38.8 
  

  

  17.5 
  

   4.20 
  

   20.4 
  

   66.2 
  

   79.7 
  

   58.1 
  

   15.5 
  

   9.30 
  

   12.5 
  

   11.5 
  

  

  14.3 
  

   14.3 
  

   37.6 
  

  

  90 
  

  

  35.3 
  

  

  38.3 
  

  

  16.1 
  

  

  33.9 
  

  

  8.33 
  

   11.1 
  

   13.1 
  

  

  7.56 
  

   16.0 
  

  

  17.2 
  

   23.3 
  

   40.6 
  

  

  19.1 
  

   3.67 
  

   21.6 
  

   68.4 
  

   80.0 
  

   57.2 
  

   14.7 
  

   10.0 
  

   13.3 
  

   11.7 
  

   23.5 
  

   16.7 
  

   15.5 
  

   38.6 
  

  

  159 
  

   37.1 
  

  

  44.3 
  

   21.7 
  

   37.1 
  

  

  7.86 
  

   13.8 
  

   13.8 
  

  

  6.2S 
  

   18.2 
  

  

  20.4 
  

   28.0 
  

   45.9 
  

  

  16 
  

   0.94 
  

   20.4 
  

   69.2 
  

   80.5 
  

   59.2 
  

   17.9 
  

   9.12 
  

   14.1 
  

  

  22.0 
  

   18.2 
  

   15.4 
  

   37.7 
  

  

  Remarks. 
  — 
  The 
  chief 
  differences 
  between 
  this 
  new 
  species 
  and 
  

   Sicyases 
  sanguineus 
  are 
  in 
  the 
  more 
  anterior 
  position 
  of 
  the 
  dorsal 
  fin 
  

   and 
  the 
  length 
  of 
  the 
  bases 
  of 
  the 
  dorsal 
  and 
  anal 
  fins. 
  The 
  following 
  

   measurements 
  indicate 
  the 
  amount 
  of 
  the 
  above 
  differences, 
  first 
  for 
  

   the 
  new 
  species 
  then 
  for 
  sanguineus 
  : 
  Distance 
  from 
  base 
  of 
  last 
  dorsal 
  

   ray 
  to 
  midcaudal 
  fin 
  base 
  in 
  upper 
  edge 
  of 
  gill 
  opening 
  to 
  dorsal 
  origin 
  

   1.65 
  and 
  1.80-2.35; 
  length 
  of 
  caudal 
  peduncle 
  in 
  tip 
  of 
  snout 
  to 
  anal 
  

   origin 
  5.26 
  and 
  5.50-T.36 
  ; 
  base 
  of 
  dorsal 
  fin 
  in 
  head 
  1.55 
  and 
  1.90-2.40; 
  

   base 
  of 
  anal 
  fin 
  in 
  head 
  2.14 
  and 
  2.8'3^.06 
  ; 
  base 
  of 
  dorsal 
  fin 
  in 
  snout 
  to 
  

  

  