﻿82 
  

   specimens 
  come 
  from 
  

   fair 
  depths 
  and 
  have 
  

   a 
  light 
  brownish 
  or- 
  

   ange 
  color, 
  ) 
  (Masc.) 
  

  

  4, 
  Family 
  Cancellariidae 
  , 
  (Lat. 
  cancelli, 
  a 
  grating 
  made 
  like 
  a 
  lat- 
  

   tice. 
  These 
  shells 
  have 
  a 
  cross-rihbed 
  sculpture. 
  Common 
  name: 
  

   CroBs-'barred 
  Shells.) 
  

  

  a) 
  Genus 
  Cancellaria 
  

   Lamarck 
  1799 
  . 
  (Fern, 
  ) 
  

  

  Cancellaria 
  conradiana 
  Pal 
  l 
  ( 
  C 
  onrad 
  ' 
  s 
  ; 
  

  

  an 
  Ameri- 
  

   Probably 
  

   lata 
  LinneJ 
  

   netted, 
  re- 
  

   ribs 
  and 
  

  

  named 
  for 
  ' 
  Timothy 
  A. 
  Conrad, 
  

   can 
  conchologist, 
  1804-1877. 
  

   the 
  same 
  species 
  as 
  C, 
  reticu 
  

   Cancellaria 
  reticulata 
  Linne 
  { 
  

  

  b) 
  Genus 
  Trigonostoma 
  

   Blainville 
  1826 
  . 
  (Gr. 
  

   trigones, 
  triangular 
  

   H- 
  stoma, 
  mouth. 
  For- 
  

   merly 
  only 
  a 
  subge 
  - 
  

   nus 
  of 
  Cancellaria 
  

   Lamarck 
  . 
  Neuter.) 
  

  

  c) 
  Genus 
  Admete 
  Krbyer 
  

   1842 
  . 
  (Gr. 
  Admete, 
  

   an 
  ocean 
  nymph. 
  Fern.) 
  

  

  ticulated; 
  with 
  longitudinal 
  

  

  revolving 
  lines,) 
  

   i 
  C 
  ancellaria 
  reticulata 
  adelae 
  Pil3bry 
  ( 
  na- 
  

   ; 
  ""med 
  for 
  Miss 
  Adele 
  Koto 
  of 
  Beloit, 
  Wis- 
  

   ' 
  consin.) 
  

  

  Trigonostoma 
  agassizi 
  Pall 
  (named 
  for 
  A- 
  

   lexander 
  Agassiz.) 
  

  

  T 
  rigonostoma 
  rugosum 
  ILaiaa 
  rgkl 
  ( 
  rough 
  ;with 
  

   strong 
  axial 
  ribs 
  and 
  spiral 
  threads,) 
  

  

  Trigonostoma 
  tenerum 
  Philippi 
  (delicate; 
  

   shell 
  fairly 
  thinTl 
  

  

  Trigonostoma 
  smithi 
  Pall 
  (named 
  in 
  honor 
  

   of 
  Sanderson 
  Smith 
  of 
  the 
  U.S. 
  Fish 
  Com- 
  

   mission,) 
  

  

  Admete 
  couthouy! 
  Jay 
  (Couthouy*s| 
  named 
  

   for 
  J. 
  P. 
  Couthouy, 
  an 
  American 
  natura- 
  

   list, 
  1808-1864.) 
  (Also 
  called 
  viridula 
  , 
  

   rather 
  greenish.) 
  

   Admete 
  microscopica 
  Dall 
  (microscopic; 
  

  

  I 
  shell 
  minute, 
  maximum 
  length 
  4,3 
  mm; 
  

  

  I 
  maximum 
  width 
  2 
  mm, 
  ) 
  

  

  ' 
  Admete 
  nodosa 
  Verrill 
  & 
  Smith 
  (knotty; 
  

  

  I 
  with 
  nodules. 
  ) 
  

  

  I 
  Admete 
  tryoni 
  Pall 
  (dedicated 
  to 
  G. 
  W. 
  

  

  I 
  Tryon, 
  an 
  American 
  naturalist, 
  1838-1888. 
  D 
  

   Formerly 
  listed 
  as 
  Benthobia 
  tryoni 
  Pall 
  

  

  I 
  

  

  (from 
  benthos, 
  depth 
  of 
  the 
  sea 
  -(- 
  bios, 
  

   life. 
  It 
  is 
  a 
  deep 
  water 
  mollusk; 
  dred- 
  

   ged 
  in 
  731 
  fathoms.) 
  

  

  5. 
  Family 
  Marginellidae 
  . 
  (Pirainutive 
  of 
  Lat. 
  margo, 
  margin-, 
  edge, 
  rim, 
  

   border. 
  Common 
  name: 
  Rim 
  Shells. 
  So 
  called 
  on 
  account 
  of 
  the 
  rim 
  

   which 
  decorates 
  the 
  right 
  border 
  of 
  the 
  aperture, 
  writes 
  Petit 
  de 
  

   la 
  Saussaye.) 
  

  

  Marginella 
  abyssorum 
  Tomlin 
  ( 
  of 
  the 
  abys- 
  

   ses; 
  dredged 
  in 
  294-640 
  fathoms.) 
  

   Marginella 
  aureocincta 
  Stearns 
  ( 
  girdled 
  

   ' 
  with 
  gold; 
  amber 
  or 
  white 
  banded 
  with 
  

  

  amber.) 
  

   Marginella 
  aureocincta 
  immaculata 
  Pall 
  

   "Timmaculate 
  ; 
  shell 
  is 
  pure 
  white. 
  1 
  

   Mar 
  ginella 
  canilla 
  Pall 
  (from 
  canus,white^ 
  

  

  