﻿78 
  PROCEEDINGS 
  OF 
  THE 
  CALIFORNIA 
  

  

  white, 
  aud 
  three 
  irregular, 
  ring-shaped 
  markings 
  of 
  the 
  same 
  color, 
  nearly 
  equi- 
  

   distant 
  and 
  along 
  a 
  central 
  line 
  on 
  the 
  back, 
  also 
  marked 
  with 
  a 
  few 
  inconspic- 
  

   uous 
  irregularly 
  placed 
  orange 
  spots 
  ; 
  cephalic 
  tentacles 
  short, 
  clavate, 
  stumpy, 
  

   fringed 
  at 
  base, 
  branchial 
  orifices 
  ou 
  each 
  side, 
  sub-central, 
  with 
  short 
  arbores- 
  

   cent 
  plumes. 
  

  

  Habitat. 
  — 
  Point 
  Pinos, 
  near 
  light 
  house, 
  Monterey, 
  California, 
  on 
  the 
  under 
  

   side 
  of 
  granite 
  boulders 
  at 
  extreme 
  low 
  tide 
  ; 
  detected 
  by 
  Mr. 
  Harford 
  and 
  my- 
  

   self 
  in 
  March, 
  18C8. 
  

  

  TRI0PIDJ3, 
  Gray. 
  

  

  TEiopA, 
  Johnston. 
  

  

  Triopa 
  Carpenter!, 
  Stearns, 
  Fig. 
  2. 
  

  

  Animal 
  slug-shaped 
  ; 
  anteriorly 
  obtusely 
  rounded, 
  posteriorly 
  pointed, 
  some- 
  

   what 
  attenuated 
  ; 
  cephalic 
  tentacles 
  clavate, 
  upper 
  part 
  of 
  same 
  of 
  an 
  orange 
  

   color, 
  below 
  white 
  ; 
  gill 
  plumes 
  five, 
  arborescent, 
  resembling 
  fern 
  leaves, 
  tipped 
  

   with 
  orange 
  ; 
  plumes 
  and 
  tentacles 
  1-16 
  inch 
  in 
  length 
  ; 
  the 
  former 
  situated 
  in 
  

   middle 
  of 
  the 
  back 
  somewhat 
  posterior 
  to 
  centre. 
  Six 
  tentacular 
  processes 
  on 
  

   each 
  side, 
  tipped 
  with 
  orange 
  and 
  1-32 
  inch 
  long 
  ; 
  also 
  short 
  tentacular 
  processes 
  

   in 
  front 
  of 
  the 
  head 
  ; 
  body 
  one 
  and 
  one-half 
  inches 
  in 
  length, 
  translucent 
  white, 
  

   covered 
  with 
  fine 
  papilloe 
  of 
  an 
  orange 
  color. 
  

  

  Habitat. 
  — 
  Monterey, 
  at 
  Point 
  Pinos 
  near 
  the 
  light 
  house, 
  on 
  the 
  under 
  side 
  

   of 
  granite 
  rocks 
  at 
  edge 
  of 
  laminarian 
  zone, 
  where 
  the 
  above 
  was 
  collected 
  by 
  

   Mr. 
  W. 
  G. 
  W. 
  Harford 
  and 
  myself 
  in 
  March, 
  1868. 
  

  

  This 
  species 
  is 
  named 
  for 
  my 
  friend 
  Dr. 
  P. 
  P. 
  Carpenter 
  of 
  Montreal, 
  whose 
  

   thorough 
  work 
  in 
  connection 
  with 
  the 
  raollusca 
  of 
  W. 
  North 
  America 
  has 
  

   been 
  of 
  great 
  service 
  to 
  investigators. 
  

  

  The 
  above 
  descriptions, 
  though 
  somewhat 
  meagre 
  from 
  lack 
  of 
  the 
  proper 
  in- 
  

   struments 
  for 
  more 
  careful 
  diagnosis, 
  are 
  nevertheless 
  adequate 
  to 
  a 
  ready 
  de- 
  

   termination 
  of 
  both 
  of 
  the 
  above 
  well 
  marked 
  and 
  elegant 
  species. 
  

  

  Descriptions 
  of 
  New 
  Marine 
  Mollusks 
  from 
  the 
  West 
  Coast 
  of 
  

   Worth 
  America. 
  

  

  BY 
  ROBERT 
  E. 
  C. 
  STEARNS. 
  

  

  CoNus 
  Dalli, 
  Stearns. 
  Plate 
  I, 
  fig. 
  1. 
  

   Shell 
  conical, 
  robust 
  with 
  a 
  smooth 
  surface 
  faintly 
  marked 
  with 
  incremental 
  

   lines; 
  lower 
  third 
  portion 
  of 
  shell 
  obscurely 
  spirally 
  ribbed 
  and 
  the 
  spire 
  ele- 
  

   vated 
  and 
  indistinctly 
  grooved 
  on 
  the 
  top 
  of 
  each 
  whorl 
  ; 
  body 
  whorl 
  and 
  spire 
  

   moderately 
  convex, 
  the 
  latter 
  with 
  a 
  distinct 
  sutural 
  line 
  and 
  a 
  faint 
  sulcation 
  

   parallel 
  to 
  the 
  same 
  ; 
  outer 
  lip 
  simple, 
  aperture 
  linear, 
  internally 
  of 
  a 
  delicate 
  

   rose-pink 
  tinge 
  ; 
  surface 
  of 
  shell 
  marked 
  with 
  irregular 
  longitudinal 
  stripes 
  of 
  

   reddish 
  brown 
  and 
  sienna 
  yellow, 
  the 
  former 
  color 
  predominating 
  and 
  blending 
  

   in 
  more 
  or 
  less 
  and 
  glazing 
  the 
  yellow 
  ; 
  the 
  longitudinal 
  markings 
  are 
  interrupted 
  

   by 
  a 
  series 
  of 
  four 
  revolving 
  bands 
  (of 
  which 
  the 
  two 
  lowest 
  are 
  the 
  widest,) 
  

   composed 
  of 
  numerous 
  whitish 
  spots 
  of 
  irregular 
  size 
  and 
  shape 
  but 
  generally 
  

   small, 
  rounded 
  or 
  angular 
  ; 
  occasionally 
  whitish 
  subangulate 
  spots 
  of 
  larger 
  size 
  

  

  