﻿39 
  

  

  J 
  Torinia 
  cyclostoma 
  Menke 
  (round 
  mouth.) 
  i 
  

   I 
  Tori 
  nia 
  cylindri 
  ca 
  G 
  meli 
  n 
  ( 
  cy 
  1 
  i 
  ndr 
  i 
  c 
  al 
  ; 
  i 
  

   i 
  whorls 
  somewhat 
  rounded.) 
  i 
  

  

  »' 
  

  

  c 
  ) 
  Genus 
  7 
  lux 
  i 
  n 
  a 
  Dall 
  

   1882 
  . 
  (Lat. 
  fluxus, 
  

   a 
  flow. 
  Shells 
  

   strongly 
  carinate. 
  

   Fern.) 
  

  

  [ 
  riuxina 
  "brunnea 
  Dall 
  (brown; 
  shell 
  light 
  

   i 
  Tarown; 
  nucleus 
  and 
  umbilicus 
  are 
  dark 
  

   I 
  brown.) 
  

  

  4, 
  Family 
  Vermetidae 
  . 
  (From 
  le 
  Vermet, 
  name 
  given 
  by 
  Adanson 
  in 
  1757 
  

   to 
  a 
  v/orm-like 
  shell. 
  No 
  doubt 
  Adanson 
  derived 
  it 
  from 
  the 
  Latin 
  

   vermis, 
  a 
  v/orm. 
  Common 
  name: 
  ^Vorm 
  Shells.) 
  

  

  a) 
  

  

  Ge 
  n 
  us 
  Petaloconchus 
  

   H. 
  C.Lea 
  184 
  5. 
  ( 
  Gr. 
  from 
  

   either 
  petalon, 
  a 
  leaf 
  

   or 
  petalos, 
  outspreadj| 
  

   broad 
  -- 
  concha, 
  shell 
  

   Lives 
  in 
  closely 
  pack-f 
  

   ed 
  colonies. 
  Formerly! 
  

   listed 
  as 
  Vermetus 
  

   Daudin 
  1800. 
  Masc.) 
  ■. 
  

  

  Petaloconchus 
  erectus 
  Dall 
  (erect, 
  high; 
  

   early 
  v/horls 
  form 
  a 
  rounded 
  pedestal, 
  

   then 
  the 
  shell 
  starts 
  vertically 
  upward 
  

   with 
  the 
  remainder 
  of 
  the 
  tube.) 
  

  

  Petaloconchus 
  irregularis 
  Orbigny 
  (irre- 
  

   gular; 
  loosely 
  coiled, 
  twisted. 
  ) 
  

  

  Petaloconchus 
  irre 
  gularis 
  varians 
  Orbigny 
  

  

  varying, 
  different. 
  ) 
  

   Petaloconchus 
  nigricans 
  Dall 
  (blackish.) 
  

  

  b 
  ) 
  Genus 
  B 
  i 
  vonia 
  Gray 
  

   1850. 
  '(dedicated 
  to 
  

   Bivona, 
  an 
  Italian 
  

   naturalist. 
  Fern.) 
  

  

  Bivonia 
  exserta 
  Dall 
  ( 
  Lat. 
  stretching 
  

   out, 
  projecting. 
  Shell 
  attached 
  by 
  its 
  

   tip, 
  and 
  rising 
  upward 
  and 
  forvvard.) 
  

  

  c 
  ) 
  Genus 
  Siphonium 
  Morch 
  T 
  

  

  1859 
  . 
  (Gr. 
  Lat. 
  a 
  ! 
  Siphonium 
  ne 
  b 
  ulosum 
  Dill\7yn 
  (cloudy.) 
  

   hollov; 
  body, 
  any 
  tubeJ 
  

   Neuter.) 
  i_ 
  

  

  d 
  ) 
  Genus 
  Serpulorbis 
  

  

  Sassi 
  

  

  1827 
  . 
  (lat. 
  

   little 
  

   a 
  

  

  serpula, 
  a 
  

   snake 
  -+- 
  orbis, 
  

   circle. 
  Circularly 
  

   twisted, 
  contorted. 
  

   Masc, 
  ) 
  

  

  I 
  Serpulorbis 
  decussatus 
  Gmelin 
  ( 
  decussatedi 
  

   i 
  X 
  shaped; 
  striae 
  crossing 
  each 
  other 
  at 
  

   j 
  acute 
  angles.) 
  

  

  5. 
  Family 
  Siliquariidae 
  . 
  (Lat. 
  siliqua, 
  a 
  pod, 
  husk. 
  Has 
  been 
  called 
  

   Tenagodidae, 
  from 
  Gr. 
  tenagodes, 
  standing 
  in 
  pools, 
  covered 
  with 
  

   shoal-water, 
  but 
  Tenagodus 
  is 
  now 
  rejected 
  as 
  non-binomial.) 
  

  

  a 
  ) 
  Gen 
  u 
  s 
  Siliquaria 
  

   Br 
  uguiere 
  1789 
  . 
  

   "(Not 
  Tenagodus 
  

   Gu 
  ettard 
  1 
  770 
  

   v/hich 
  has 
  been 
  re- 
  

   jected. 
  Fem. 
  ) 
  

  

  b 
  ) 
  Genus 
  Vermicularia 
  

   Lamarck 
  1799. 
  "(Lat 
  . 
  

   vermi 
  cuius, 
  a 
  little 
  

   worm. 
  Fern.) 
  

  

  ■Siliquari 
  a 
  m 
  o 
  desta 
  Dal 
  l 
  (modest; 
  shell 
  

   ! 
  small, 
  coils 
  seldom 
  more 
  than 
  25 
  mm; 
  di- 
  

   I 
  ameter 
  of 
  the 
  mouth 
  3 
  mm. 
  or 
  less; 
  pro- 
  

   j 
  bably 
  the 
  young 
  of 
  the 
  next 
  species.) 
  

   I 
  Siliquaria 
  s 
  qu 
  amata 
  Blainville 
  ( 
  scaly 
  ; 
  

   i 
  whorls 
  may 
  be 
  very 
  spinose. 
  ) 
  

  

  I 
  Ve 
  rmicu 
  la 
  ria 
  s-pirata 
  Philippi 
  (spiral, 
  

   I 
  coiledTT 
  

  

  ■ 
  Vermicularia 
  fargoi 
  Olsson 
  ( 
  Fargo 
  ' 
  s 
  ; 
  nama; 
  

   for 
  7illiam 
  Fargo, 
  Pass-a-Grille, 
  Florida.) 
  

  

  