﻿G 
  enus 
  Peripl 
  o 
  m 
  a 
  Schu 
  - 
  

  

  183 
  

   Periploma 
  a 
  n 
  guliferum 
  Philippi 
  ( 
  an 
  gu 
  1 
  a 
  - 
  

   ted; 
  lower 
  border 
  of 
  right 
  valve 
  has 
  a 
  

   keel 
  ending 
  in 
  an 
  angle.) 
  

   Periplom 
  a 
  fragile 
  T 
  ot 
  ten 
  (fragile, 
  thin.) 
  

   Peri 
  p 
  loma 
  in 
  aeq 
  uivalv 
  e 
  Sch 
  umacher 
  (in- 
  

   equal 
  valves. 
  One 
  valve 
  is 
  more 
  convex 
  

   than 
  the 
  other, 
  or 
  is 
  dissimilar 
  in 
  

   other 
  respects. 
  This 
  species 
  is 
  from 
  

   the 
  West 
  Indies.) 
  

   Periploma 
  inequale 
  C. 
  B. 
  Adsims 
  ( 
  i 
  n 
  e 
  qu 
  a 
  1 
  ; 
  

  

  the 
  left 
  valve 
  is 
  more 
  convex 
  than 
  the 
  

  

  macher 
  1817.~["Neuter.)i 
  right 
  valve.) 
  

  

  Periploma 
  papyrati 
  um 
  Say 
  (not 
  papyrace- 
  

   um, 
  which, 
  however, 
  is 
  a 
  very 
  good 
  Lat- 
  

   in 
  word; 
  paper, 
  of 
  the 
  consistency 
  of 
  

   paper; 
  shell 
  white, 
  fragile 
  and 
  thin.) 
  

   Peripl 
  o 
  ma 
  t 
  en 
  erum 
  Pischer 
  ( 
  delicate. 
  ) 
  

   Periploma 
  undulatum 
  Ver 
  r 
  ill 
  ( 
  wavy 
  . 
  ) 
  j 
  

   i 
  Peripl 
  om 
  a 
  leanum 
  Conrad 
  (Lea' 
  s; 
  named 
  in 
  

   j 
  honor 
  of 
  Isaac 
  Lea, 
  a 
  great 
  American 
  

   •i 
  conchologist, 
  surnamed 
  the 
  "Nestor 
  of 
  

   American 
  naturalists", 
  1792-1886.) 
  

  

  E. 
  ORDER 
  SE 
  PT 
  IBRANCHIA 
  

  

  (Lat. 
  septum, 
  an 
  enclosure, 
  fence, 
  partition 
  -\- 
  Gr. 
  hranchia, 
  gills. 
  

   Gills 
  are 
  transformed 
  into 
  a 
  muscular 
  septum 
  or 
  partition.) 
  

  

  1. 
  Family 
  Verticordiidae 
  . 
  (Lat. 
  Verticordia, 
  another 
  name 
  for 
  Venus 
  

   who 
  turns 
  the 
  hearts 
  (vertere, 
  to 
  turn 
  -i- 
  cor, 
  cordis, 
  heart.) 
  

  

  '■• 
  Verticor 
  d 
  ia 
  acuticostata 
  Philippi 
  (with 
  

   i 
  sharp 
  ribs. 
  ) 
  

  

  I 
  Verticordia 
  granulifera 
  V 
  errill 
  (bearing 
  

   I 
  granules. 
  ) 
  

  

  i 
  Ver 
  tipordi 
  a 
  per 
  versa 
  Pall 
  (Lat. 
  turned 
  

   the 
  wrong 
  way; 
  radiating 
  lines 
  curved 
  

   forward. 
  ) 
  

   Verticordia 
  seguenzae 
  Pall 
  (Seguenza's; 
  

   named 
  for 
  Professor 
  G. 
  Seguenza, 
  an 
  

   Italian 
  naturalist.) 
  

   Verti 
  c 
  ordia 
  wo 
  od 
  i 
  5. 
  A. 
  Sm 
  i 
  th 
  ( 
  'To 
  o 
  d 
  ' 
  s 
  . 
  ) 
  

   Ve 
  rti 
  cordia 
  orn 
  ata 
  Orbigny 
  Ta 
  do 
  rned 
  ; 
  

  

  with 
  nine 
  or 
  ten 
  prominent 
  radial 
  ribs.) 
  

  

  Verticordi 
  a 
  orn 
  ata 
  c 
  aelata 
  Verrill 
  ( 
  Lat 
  . 
  

  

  caelatus, 
  carved, 
  chiseled. 
  ) 
  

  

  I 
  Verticordia 
  elegant 
  i 
  ssima 
  Dal 
  l 
  (very 
  

  

  ' 
  elegant. 
  ) 
  

  

  I 
  Vert 
  i 
  cor 
  dia 
  fis 
  c 
  heriana 
  Dall 
  ( 
  Pi 
  s 
  che 
  r 
  ' 
  s 
  ; 
  

   I 
  named 
  in 
  honor 
  of 
  Dr. 
  Paul 
  Fischer, 
  an 
  

   I 
  eminent 
  French 
  malacologist 
  . 
  ) 
  

   I 
  Verticordia 
  tr 
  apezoides 
  Seg 
  uenza 
  ( 
  trape- 
  

   ' 
  zoid-shapedTT 
  

  

  a) 
  

  

  Genus 
  Verticor 
  d 
  i 
  a 
  

   S 
  ower 
  by 
  1844. 
  {"Pem. 
  ) 
  

  

  Lyonsiell 
  a 
  abys 
  sicola 
  Sar 
  s 
  (dweller 
  of 
  

   the 
  abyss; 
  found 
  in 
  192-500 
  fathoms.) 
  

   I 
  Lyon 
  si 
  ell 
  a 
  cor 
  d 
  at 
  a 
  Ve 
  r 
  rill 
  & 
  Bush 
  (cor- 
  

   date; 
  heart- 
  shaped, 
  y~ 
  

  

  