﻿b) 
  Genua 
  Lyonsiella 
  

   Sars 
  186.8 
  . 
  fDerived 
  

   from 
  Lyonsia; 
  named 
  

   after 
  W, 
  Lyons. 
  Pern.) 
  

  

  184 
  ; 
  

  

  Lyonsiella 
  gemma 
  Verrill 
  (gem.) 
  '■ 
  

   Lyonsiella 
  granulif 
  era 
  Verrill 
  (with 
  i 
  

   granules. 
  ) 
  i 
  

  

  Lyonsie 
  ll 
  a 
  i 
  n 
  sculpta. 
  Jeffreys 
  ( 
  engraved^ 
  

   carved. 
  y 
  i 
  

  

  i 
  L 
  yonsiella 
  subquadrata 
  Jeffreys 
  ( 
  somewhad 
  

   L 
  quadrate.! 
  , 
  

  

  c) 
  Genus 
  Halicardia 
  Pall" 
  

  

  1894. 
  (Gr. 
  hals, 
  the 
  

   sea 
  -t- 
  cardia, 
  heart. 
  

  

  Fern. 
  ) 
  

  

  Halicardia 
  flexuo 
  s 
  a 
  Verrill 
  & 
  3mith 
  i 
  

   (having 
  curvatures, 
  bent. 
  Beaks 
  very 
  i 
  

   much 
  curved; 
  surface 
  divided 
  by 
  ridges, 
  | 
  

  

  2. 
  Family 
  Poromyida 
  e. 
  (Lat, 
  porus, 
  a 
  way, 
  

   The 
  valves' 
  surface 
  is 
  granulose.) 
  

  

  a 
  pore 
  -;- 
  mya, 
  a 
  sea-musselL 
  

  

  a) 
  Genus 
  Poromya 
  For 
  - 
  

   bes 
  1844 
  . 
  (Fern.) 
  

  

  b) 
  Genus 
  Ce 
  toconcha 
  

   Pall 
  1886 
  . 
  (Lat. 
  

   cetus, 
  a 
  whale 
  -•- 
  

   concha, 
  a 
  shell. 
  

   Fem. 
  ) 
  

  

  Po 
  romya 
  granatina 
  Pall 
  (Lat. 
  granatus, 
  I 
  

  

  grained, 
  rough. 
  1 
  | 
  

  

  Poromya 
  granulata 
  Hys 
  t 
  (granular, 
  with 
  ! 
  

  

  granule-like 
  points.]" 
  ) 
  

  

  Poromya 
  granulata 
  rotundata 
  Jeffreys 
  i 
  

  

  (rounded, 
  ) 
  ; 
  

  

  Poromya 
  neaeroides 
  Seguenz 
  a 
  (shaped 
  like! 
  

  

  a 
  Neaera 
  ( 
  a 
  former 
  name 
  for 
  Cuspidariai 
  

   Poromya 
  ro 
  strata 
  Rehder 
  (rostrate; 
  left 
  j 
  

  

  valve 
  is 
  more 
  rostrate 
  than 
  the 
  right.) 
  

   Poromya 
  sublaevis 
  Verrill 
  ( 
  somewhat 
  

  

  smooth; 
  externally 
  the 
  shell 
  is 
  nearly 
  

  

  smooth. 
  ) 
  

   Poromya 
  sublaevis 
  microdonta 
  Pall 
  ( 
  Gr 
  , 
  

  

  micros, 
  small 
  -•- 
  odous, 
  odont-, 
  tooth.) 
  

   Poromya 
  albida 
  Pall 
  ( 
  whi 
  t 
  i 
  sh 
  , 
  ) 
  

   Poromya 
  elongata 
  Pal 
  l 
  ( 
  e 
  1 
  o 
  nga 
  ted.) 
  

   P 
  oromya 
  tornata 
  Jeffrey 
  s 
  (turned, 
  shaped 
  

  

  on 
  the 
  latheTl 
  

  

  Cetocon 
  ch 
  a 
  atypha 
  Verrill 
  & 
  Bush 
  ( 
  Gr 
  . 
  

  

  atyphos, 
  not 
  puffed 
  up, 
  modest.) 
  

   C 
  eto 
  c 
  onch 
  a 
  bulla 
  Pal 
  l 
  (bubble 
  , 
  ) 
  

   Cetoconcha 
  margarita 
  Pall 
  (a 
  pearl.) 
  

  

  3. 
  Family 
  Cuspidariidae 
  . 
  (Lat, 
  cuspis, 
  cuspid-, 
  a 
  point. 
  These 
  shells! 
  

   are 
  provided 
  with 
  a 
  long, 
  slender 
  rostrxim, 
  like 
  a 
  handle. 
  Common 
  ■ 
  

   names 
  Pipper 
  Shells.) 
  

  

  Cuspidar 
  i 
  a 
  abyssicola 
  Verrill 
  & 
  Bush 
  

   (dweller 
  of 
  the 
  abyss; 
  found 
  in 
  1685- 
  

   1813 
  fathoms.) 
  

  

  Cuspidaria 
  alternata 
  Orbigny 
  ( 
  alternate 
  . 
  

  

  Cusp 
  idaria 
  arctica 
  Sars 
  (arctic; 
  Arctic 
  

   Ocean 
  to 
  Nova 
  Scotia. 
  ) 
  

  

  Cuspidaria 
  arcu 
  a 
  ta 
  Pall 
  ( 
  ar 
  che 
  d 
  . 
  ) 
  

  

  Cuspidaria 
  formosa 
  Verrill 
  & 
  Bus 
  h 
  (hand- 
  

   some; 
  surface 
  more 
  or 
  less 
  iridescent; 
  

   color 
  pale 
  pink.) 
  

  

  Cuspidaria 
  fraterna 
  Verrill 
  & 
  Bush 
  ( 
  fra- 
  

  

  ternal, 
  brotherly, 
  

   obesa. 
  ) 
  

  

  resembles 
  Cuspidaria 
  

  

  