﻿ACADEMY 
  OF 
  SCIENCES. 
  13 
  

  

  beak 
  slender, 
  elongated. 
  Length, 
  six 
  feet 
  seven 
  to 
  nine 
  inches. 
  Length 
  of 
  

   skull, 
  18.76 
  in. 
  ; 
  length 
  of 
  beak 
  before 
  the 
  notches, 
  11.9 
  in. 
  ; 
  height 
  of 
  skull 
  at 
  

   vertex, 
  6 
  in. 
  ; 
  greatest 
  breadth 
  at 
  zygomatic 
  process 
  of 
  squamosals, 
  6.95 
  in. 
  ; 
  

   breadth 
  between 
  maxillary 
  notches, 
  3.4 
  in. 
  ; 
  ditto 
  at 
  middle 
  of 
  beak, 
  2 
  in. 
  

   Teeth, 
  ^%7, 
  the 
  anterior 
  six 
  on 
  each 
  side 
  very 
  small, 
  not 
  projecting 
  above 
  the 
  

   gums. 
  Two 
  female 
  specimens. 
  Cape 
  Arguello, 
  California, 
  Scammon, 
  1872 
  ; 
  

   of 
  which 
  one 
  entire 
  skeleton 
  has 
  been 
  forwarded 
  to 
  the 
  National 
  Museum 
  at 
  

   Washington. 
  

  

  This 
  species 
  belongs 
  to 
  the 
  restricted 
  genus 
  Ddphinus 
  of 
  Gray, 
  and 
  is 
  pecul- 
  

   iar 
  from 
  its 
  extremely 
  attenuated 
  beak 
  and 
  very 
  deep 
  channels 
  on 
  each 
  side 
  of 
  

   the 
  palate 
  behind. 
  The 
  superior 
  aspect 
  of 
  the 
  skull 
  resembles 
  that 
  of 
  Clymenia 
  

   microps, 
  Gray. 
  It 
  differs 
  from 
  all 
  the 
  described 
  species 
  of 
  the 
  genus 
  in 
  color 
  

   and 
  psteological 
  characters, 
  and 
  will 
  be 
  fully 
  described 
  in 
  the 
  forthcoming 
  mon- 
  

   ograph 
  of 
  the 
  Pacific 
  Cetacea, 
  by 
  Capt. 
  C. 
  M. 
  Scammon, 
  U. 
  S. 
  R 
  M., 
  to 
  whom 
  

   I 
  am 
  indebted 
  for 
  the 
  opportunity 
  of 
  describing 
  this 
  and 
  the 
  following 
  species. 
  

   It 
  is 
  dedicated, 
  by 
  request 
  of 
  Capt. 
  Scammon, 
  to 
  Prof. 
  S. 
  F. 
  Baird, 
  of 
  the 
  

   Smithsonian 
  Institution. 
  

  

  Tursiops 
  Gillii, 
  n. 
  s. 
  • 
  

  

  Dull 
  black, 
  lighter 
  on 
  the 
  belly. 
  Dorsal 
  low, 
  falcate. 
  Teeth, 
  '-^j. 
  Mon- 
  

   terey, 
  California. 
  Lower 
  jaw 
  : 
  length 
  from 
  end 
  of 
  beak 
  to 
  condyles, 
  16.8 
  in. 
  ; 
  

   do. 
  to 
  end 
  of 
  coronoid 
  process, 
  15.8 
  in. 
  ; 
  do. 
  to 
  end 
  of 
  tooth 
  line, 
  9.3 
  in. 
  ; 
  length 
  

   of 
  symphysis, 
  2 
  in. 
  ; 
  width 
  between 
  outer 
  edges 
  of 
  condyles, 
  9.75 
  in. 
  ; 
  between 
  

   two 
  posterior 
  teeth, 
  3.5 
  in. 
  ; 
  height 
  of 
  ramus 
  at 
  coronoid 
  process, 
  4.4 
  in. 
  The 
  

   material 
  for 
  identification 
  of 
  this 
  species 
  is 
  unfortunately 
  very 
  small, 
  being 
  only 
  

   the 
  lower 
  jaw, 
  and 
  outlines 
  of 
  the 
  animal, 
  drawn 
  by 
  Capt. 
  Scammon. 
  It 
  does 
  

   not 
  appear 
  to 
  have 
  been 
  described, 
  and 
  the 
  only 
  other 
  species 
  of 
  the 
  genus 
  des- 
  

   cribed 
  from 
  the 
  Pacific 
  is 
  the 
  T. 
  catalania, 
  Gray, 
  from 
  N. 
  W. 
  Australia, 
  which 
  

   is 
  described 
  as 
  being 
  lead 
  colored. 
  It 
  is 
  dedicated, 
  by 
  desire 
  of 
  Capt. 
  Scam- 
  

   mon, 
  to 
  Prof. 
  Theodore 
  Gill, 
  of 
  the 
  Smithsonian 
  Institution, 
  whose 
  memoirs 
  on 
  

   the 
  Cetacea 
  and 
  Pinnipedia 
  of 
  the 
  Pacific 
  are 
  already 
  classical. 
  

  

  Grampus 
  Stearnsii, 
  n. 
  s. 
  

  

  Colors 
  dark, 
  but 
  variable 
  : 
  the 
  anterior 
  portion 
  of 
  the 
  body 
  white, 
  and 
  the 
  

   sides 
  of 
  the 
  body 
  more 
  or 
  less 
  mottled 
  with 
  gray. 
  Dorsal 
  high, 
  and 
  slightly 
  

   falcate. 
  Animal 
  12 
  or 
  15 
  feet 
  long 
  ; 
  teeth 
  I 
  or 
  i 
  Coast 
  of 
  California. 
  

  

  Two 
  lower 
  jaws 
  of 
  this 
  animal 
  are 
  in 
  my 
  hands 
  for 
  examination, 
  and 
  but 
  that 
  

   no 
  Grampus 
  has 
  been 
  described 
  from 
  the 
  Pacific, 
  I 
  should 
  hesitate 
  about 
  ap- 
  

   plying 
  a 
  specific 
  name 
  to 
  them. 
  Gray 
  has, 
  indeed, 
  catalogued 
  a 
  Grampus 
  (?) 
  

   sakamata 
  (!) 
  from 
  Japan, 
  based 
  on 
  a 
  Japanese 
  account 
  quoted 
  by 
  Schlegel, 
  

   but 
  the 
  genus 
  is 
  by 
  no 
  means 
  certain 
  ; 
  the 
  descriptions 
  are 
  conflicting, 
  and 
  the 
  

   species 
  rests 
  on 
  no 
  scientific 
  basis. 
  The 
  jaws 
  referred 
  to 
  are 
  attributed 
  by 
  Cap- 
  

   tain 
  Scammon 
  to 
  his 
  " 
  white-headed 
  grampus," 
  and 
  measure, 
  from 
  the 
  end 
  of 
  the 
  

   beak 
  to 
  the 
  condyles, 
  17.5 
  in.; 
  ditto 
  to 
  coronoid 
  process, 
  16.2 
  in. 
  ; 
  height 
  of 
  

   ramus 
  at 
  coronoid 
  process, 
  5 
  in. 
  ; 
  length 
  of 
  symphysis, 
  2 
  in. 
  ; 
  height 
  of 
  gonys, 
  

   2 
  in. 
  ; 
  width 
  between 
  outer 
  corners 
  of 
  condyles. 
  14 
  in. 
  ; 
  ditto 
  at 
  inferior 
  dental 
  

  

  