﻿115 
  

  

  of 
  the 
  operclc, 
  with 
  its 
  infovioi' 
  margin 
  below 
  the 
  median 
  plane 
  

   of 
  the 
  head, 
  and 
  its 
  superior 
  at 
  the 
  facial 
  outline. 
  The 
  posteri- 
  

   or 
  nostril 
  is 
  very 
  near 
  the 
  eye, 
  at 
  the 
  end 
  of 
  the 
  superciliary 
  

   ridge. 
  The 
  mouth 
  is 
  small, 
  hardly 
  reaching 
  to 
  the 
  eye 
  ; 
  the 
  

   lower 
  jaw 
  is 
  nearly 
  as 
  long 
  as 
  the 
  upper, 
  though 
  its 
  teeth 
  

   are 
  received 
  within 
  it 
  when 
  the 
  mouth 
  is 
  shut 
  ; 
  both 
  are 
  

   armed, 
  as 
  well 
  as 
  the 
  vomer 
  and 
  pharyngeal 
  bones, 
  with 
  

   numerous, 
  minute, 
  closely 
  set, 
  pointed, 
  recurved 
  teeth. 
  The 
  

   preopercle 
  is 
  so 
  rounded 
  as 
  to 
  present 
  no 
  angle 
  ; 
  the 
  opercle 
  

   is 
  small, 
  triangular, 
  with 
  its 
  base 
  before 
  and 
  its 
  apex 
  behind, 
  

   and 
  is 
  armed 
  with 
  a 
  slender, 
  delicate 
  spine 
  ; 
  the 
  interoperclo 
  

   and 
  subopercle 
  are 
  large. 
  The 
  latei'al 
  line 
  runs 
  along 
  the 
  su- 
  

   perior 
  fourth 
  of 
  the 
  body, 
  to 
  the 
  end 
  of 
  the 
  anterior 
  dorsal 
  tin, 
  

   whence 
  it 
  gradually 
  descends 
  to 
  the 
  median 
  plane 
  of 
  the 
  tail. 
  

   The 
  anterior 
  dorsal 
  fin 
  begins 
  in 
  a 
  lino 
  vertical 
  with 
  

   tlie 
  anterior 
  third 
  of 
  the 
  pectoral, 
  extends 
  to 
  the 
  vent, 
  

   and 
  has 
  ten 
  spines 
  ; 
  the 
  posterior 
  is 
  more 
  elevated, 
  

   and 
  has 
  eleven 
  rays. 
  The 
  pectoral 
  arises 
  a 
  little 
  behind 
  the 
  

   opercle 
  and 
  extends 
  to 
  the 
  root 
  of 
  the 
  ninth 
  dorsal 
  spine 
  ; 
  it 
  

   is 
  slender, 
  and 
  has 
  twelve 
  rays. 
  The 
  ventral 
  begins 
  at 
  some 
  

   distance 
  behind 
  the 
  origin 
  of 
  the 
  pectoral 
  fin, 
  but 
  extends 
  

   beyond 
  it 
  ; 
  it 
  is 
  long, 
  slender, 
  v/Ith 
  one 
  delicate 
  spine 
  and 
  five 
  

   soft 
  rays. 
  The 
  anal 
  begins 
  slightly 
  behind 
  the 
  origin 
  of 
  the 
  

   posterior 
  dorsal 
  fin, 
  and 
  determines 
  with 
  it 
  behind 
  ; 
  it 
  has 
  

   ten 
  soft 
  rays. 
  The 
  caudal 
  is 
  long, 
  narrow, 
  and 
  rounded 
  behind- 
  

   Head 
  with 
  greenish 
  tints 
  at 
  the 
  opercle 
  ; 
  body 
  above 
  jiale 
  

   brown 
  ; 
  belly 
  white 
  ; 
  a 
  longitudinal 
  row 
  of 
  rounded 
  dusky 
  

   spots 
  on 
  the 
  sides. 
  The 
  second 
  dorsal 
  and 
  anal 
  fins 
  havu 
  

   dusky 
  points 
  arranged 
  in 
  lines. 
  Total 
  length, 
  2 
  to 
  3 
  inches. 
  

  

  Fin-rays 
  :-D 
  10, 
  11 
  ; 
  P. 
  12. 
  Y. 
  1, 
  5 
  ; 
  A. 
  10 
  ; 
  C. 
  11. 
  

  

  Boleosoma 
  Barraliii, 
  Storer. 
  

  

  This 
  little 
  fish 
  resembles 
  very 
  much 
  the 
  " 
  Tesselated 
  

   Darter" 
  {Bolecsoma 
  olmdedi, 
  Storer) 
  in 
  appearance, 
  but 
  

   frequents 
  entirely 
  dilierent 
  haunts. 
  Instead 
  of 
  living 
  in 
  clear 
  

   streams 
  with 
  rocky 
  beds, 
  it 
  is 
  found 
  in 
  thu 
  dark, 
  sluggish 
  

   creeks 
  of 
  Worcester 
  County, 
  settling 
  on 
  the 
  black 
  mud 
  found 
  

  

  