﻿ACADEMY 
  OF 
  SCIENCES. 
  79 
  

  

  than 
  those 
  inchided 
  in 
  the 
  bands 
  occur 
  between 
  the 
  same, 
  and 
  in 
  line 
  with 
  the 
  

   longitudinal 
  markings. 
  

  

  Dimensions 
  of 
  largest 
  : 
  Long. 
  2.35 
  ; 
  lat. 
  1.22 
  inches. 
  Another 
  specimen 
  

   measures: 
  Long. 
  2.15; 
  lat. 
  1.1 
  inches. 
  

  

  Habitat. 
  — 
  Gulf 
  of 
  California, 
  from 
  whence 
  specimens 
  are 
  occasionally 
  brought 
  

   to 
  San 
  Francisco 
  on 
  vessels 
  in 
  the 
  Gulf 
  trade. 
  It 
  is 
  not 
  common. 
  

  

  Figure 
  70 
  in 
  Sowby's 
  Conch. 
  Illustr. 
  without 
  habitat, 
  and 
  named 
  " 
  C. 
  textile 
  

   var." 
  resembles 
  this 
  species. 
  Specimens 
  are 
  in 
  my 
  collection 
  and 
  in 
  that 
  of 
  Mr. 
  

   Fisher 
  of 
  San 
  Francisco. 
  

  

  This 
  shell 
  belongs 
  to 
  the 
  group 
  of 
  so-called 
  " 
  embroidered 
  cones" 
  of 
  which 
  C. 
  

   textile 
  is 
  the 
  most 
  common 
  illustration, 
  and 
  it 
  might 
  carelessly 
  be 
  mistaken 
  for 
  

   that 
  species 
  ; 
  in 
  C. 
  textile 
  however 
  the 
  white 
  (in 
  cleaned 
  specimens) 
  is 
  the 
  dom- 
  

   inant 
  color, 
  and 
  the 
  triangular 
  blotches 
  of 
  white 
  are 
  large 
  and 
  sharply 
  defined 
  

   by 
  a 
  line 
  of 
  brown, 
  and 
  there 
  is 
  but 
  little 
  blending 
  or 
  coalescing 
  of 
  the 
  brown 
  

   and 
  yellow 
  lines, 
  which 
  are 
  much 
  sharper 
  and 
  more 
  distinct 
  as 
  well 
  as 
  of 
  a 
  lighter 
  

   shade 
  and 
  narrower 
  than 
  in 
  C. 
  Dalli. 
  C. 
  textile 
  is 
  of 
  a 
  clear 
  whiteness 
  interiorly, 
  

   while 
  the 
  shell 
  described 
  herein 
  has 
  a 
  delicate 
  pinkish 
  interior 
  ; 
  in 
  textile 
  the 
  

   spire 
  is 
  somewhat 
  concave, 
  in 
  Dalli 
  it 
  is 
  moderately 
  convex; 
  and 
  the 
  latter 
  in 
  

   outline 
  is 
  a 
  less 
  graceful 
  shell, 
  and 
  belongs 
  to 
  a 
  widely 
  separated 
  zoological 
  

   province. 
  

  

  Ptychateactus 
  occidentalis, 
  Stearns. 
  

  

  P. 
  occidentalis, 
  Stearns, 
  Prel. 
  Descr. 
  August 
  28, 
  1871. 
  

  

  Shell 
  elongated, 
  fusiform, 
  rather 
  slender, 
  whitish, 
  traversed 
  by 
  narrow, 
  revolv- 
  

   ing, 
  brownish 
  threads 
  and 
  much 
  wider 
  intervening 
  spaces 
  ; 
  suture 
  distinct, 
  spire 
  

   tapering 
  ; 
  aperture 
  oblong-oval, 
  about 
  half 
  the 
  length 
  of 
  the 
  shell 
  ; 
  within 
  white, 
  

   polished 
  ; 
  canal 
  short, 
  nearly 
  straight 
  ; 
  columellar 
  obliquely, 
  not 
  strongly 
  pli- 
  

   cated 
  ; 
  length 
  about 
  three-fourths 
  of 
  an 
  inch. 
  

  

  Habitat. 
  — 
  Near 
  the 
  Island 
  of 
  Nagai, 
  one 
  of 
  the 
  Shumagin 
  Islands, 
  where 
  it 
  

   was 
  hooked 
  up 
  attached 
  to 
  a 
  rock 
  from 
  a 
  depth 
  of 
  forty 
  fathoms, 
  by 
  Captain 
  

   Prime 
  of 
  the 
  California 
  Fishing 
  fleet 
  ; 
  through 
  the 
  kindness 
  of 
  Mr. 
  Harford 
  

   to 
  whom 
  it 
  was 
  given, 
  it 
  is 
  now 
  in 
  my 
  cabinet. 
  

  

  This 
  shell 
  in 
  its 
  general 
  features 
  resembles 
  the 
  North 
  Atlantic 
  P. 
  ligatus 
  of 
  

   Mighel 
  and 
  Adams, 
  vide 
  Boston 
  Jour. 
  Natl. 
  Hist., 
  IV, 
  1842, 
  p. 
  51, 
  pi. 
  iv., 
  fig. 
  

   17. 
  It 
  is 
  a 
  more 
  delicate 
  shell 
  than 
  the 
  Atlantic 
  species, 
  though 
  my 
  solitary 
  

   specimen, 
  judging 
  by 
  the 
  thinness 
  of 
  the 
  outer 
  lip, 
  is 
  not 
  quite 
  mature. 
  I 
  re- 
  

   gret 
  that 
  I 
  am 
  unable 
  at 
  present 
  to 
  furnish 
  figures 
  of 
  this 
  and 
  the 
  succeeding 
  

   species, 
  the 
  specimens 
  having 
  inadvertently 
  been 
  mislaid. 
  

  

  Fusus 
  (Chrysodomus?) 
  Haefordii, 
  Stearns. 
  

  

  F. 
  (C.) 
  Harfordii, 
  Stearns, 
  Prel. 
  Descr. 
  August 
  28, 
  1871. 
  

  

  Shell 
  solid, 
  elongate, 
  regularly 
  fusiform 
  ; 
  spire 
  elevated, 
  whorls 
  six 
  or 
  seven, 
  

   moderately 
  convex, 
  slightly 
  flattened 
  (in 
  outline) 
  above, 
  with 
  a 
  groove 
  or 
  chan- 
  

   nel 
  following 
  the 
  suture 
  ; 
  color, 
  chocolate 
  brown 
  ; 
  surface 
  marked 
  by 
  numerous 
  

   narrow 
  revolving 
  costae, 
  which 
  alternate 
  in 
  prominence 
  on 
  the 
  body 
  whorl, 
  and 
  

   longitudinally 
  by 
  fine 
  incremental 
  strias, 
  and 
  on 
  the 
  upper 
  whorls 
  by 
  obtusely 
  

  

  