﻿382 
  ■ 
  Panama 
  Shells. 
  muricid^. 
  

  

  sub-quadrate, 
  eflfuse 
  below, 
  sub-effuse 
  above 
  : 
  labrum 
  produced 
  

   very 
  far 
  in 
  tbe 
  lower 
  half, 
  in 
  old 
  sliells 
  excessively 
  thickened. 
  

  

  Mean 
  divergence 
  about 
  32° 
  : 
  length, 
  1.6 
  inch 
  ; 
  breadth, 
  .75 
  

   inch 
  ; 
  length 
  of 
  spire 
  1.15 
  inch. 
  

  

  This 
  species 
  must 
  closely 
  resemble 
  G. 
  varicosum 
  Sowb., 
  and 
  

   C. 
  varicosum 
  Kiener, 
  which 
  are 
  probably 
  distinct 
  from 
  each 
  

   other. 
  G. 
  Hegeswichii 
  Phil, 
  is 
  also 
  similar 
  to 
  our 
  shell. 
  (It 
  is 
  

   to 
  be 
  regretted 
  that 
  Dr. 
  Philippi 
  has 
  not 
  stated 
  which 
  side 
  of 
  

   Mexico 
  his 
  species 
  inhabits.) 
  Sowerby's 
  shell 
  maybe 
  ours. 
  It 
  

   appears 
  like 
  a 
  dwarfed 
  variety. 
  Orbigny 
  considers 
  it 
  as 
  the 
  

   young 
  of 
  the 
  shell 
  which 
  he 
  had 
  from 
  Guayaquil, 
  but 
  speaks 
  of 
  

   a 
  circular 
  umbilicus. 
  

  

  Station. 
  — 
  With 
  G.pulchrum. 
  

  

  HaUtat.—Va.nQm.ai 
  ; 
  E. 
  Jewett 
  ! 
  Gould 
  MSS. 
  

  

  Panama 
  ; 
  C. 
  B. 
  A. 
  ! 
  

   250 
  specimens 
  were 
  collected 
  with 
  G. 
  puhhrum. 
  

  

  207. 
  Triphoris 
  alternatus. 
  Nov. 
  sp. 
  

  

  Shell 
  long, 
  conic, 
  sinistrorsal 
  : 
  blackish 
  red 
  except 
  that 
  in 
  the 
  

   lower 
  whorls 
  a 
  dingy 
  white 
  spiral 
  stripe 
  occupies 
  the 
  lower 
  two- 
  

   thirds 
  of 
  each 
  whorl 
  : 
  with 
  two 
  stout 
  marginal 
  spiral 
  ridges, 
  and 
  

   a 
  rather 
  smaller 
  intermediate 
  one, 
  which 
  is 
  wanting 
  on 
  the 
  upper 
  

   whorls 
  ; 
  with 
  about 
  twenty 
  -five 
  transverse 
  moderately 
  developed 
  

   ridges, 
  which 
  terminate 
  at 
  the 
  periphery 
  of 
  the 
  last 
  whorl, 
  with 
  

   the 
  intersections 
  strongly 
  nodulous 
  ; 
  anteriorly 
  with 
  two 
  addi- 
  

   tional 
  spiral 
  ridges 
  : 
  apex 
  very 
  acute 
  : 
  spire 
  with 
  the 
  outlines 
  

   slightly 
  curvilinear 
  : 
  whorls 
  twelve, 
  nearly 
  flat, 
  with 
  an 
  indis- 
  

   tinct 
  suture 
  ; 
  last 
  whorl 
  short, 
  concave 
  anteriorly 
  : 
  aperture 
  

   rhombic 
  : 
  canal 
  rather 
  deep, 
  short. 
  

  

  Mean 
  divergence 
  about 
  30°; 
  length 
  .2 
  inch; 
  breadth 
  .06 
  

   inch 
  ; 
  length 
  of 
  spire 
  .155 
  inch. 
  

  

  Station. 
  — 
  Unknown.. 
  

  

  