﻿30 
  

  

  Littorina 
  o"btusata 
  Linne 
  ("blunt; 
  spire 
  

   low, 
  flattenedTl 
  

  

  Littorina 
  ziczac 
  Gmelin 
  (with 
  zigzag 
  li- 
  

   nes. 
  Lit 
  torina 
  ziczac 
  lineata 
  Lamarck 
  is 
  

   the 
  same 
  

  

  as 
  L. 
  nebulosa 
  

   lippi 
  (lined.) 
  

  

  tessellata 
  Phi- 
  

  

  b 
  ) 
  Genus 
  Nodilittorina 
  

   vo 
  n 
  Martens 
  1897 
  , 
  

   ^Lat, 
  nodus, 
  knot-*- 
  

   li 
  tt 
  or 
  ina, 
  Littorina 
  

   with 
  nodules, 
  Fern.) 
  

  

  c) 
  Genus 
  Echininus 
  

   & 
  Abbott 
  1942. 
  

  

  Cl 
  ench 
  

   fcr 
  , 
  Lat 
  , 
  

   hedgehog, 
  

   Masc. 
  ) 
  

  

  echinus, 
  a 
  

   sea-urchin. 
  

  

  Nodilittorina 
  tuberculata 
  Menke 
  ( 
  sculptu- 
  

   red 
  with 
  sharp 
  tubercles; 
  formerly 
  list- 
  

   ed 
  as 
  Tectarius 
  tuberculatus 
  TYood 
  and 
  

   Tectarius 
  trochif 
  ormis 
  Dillwyn 
  (cone 
  

   shaped, 
  top 
  shaped,) 
  

  

  Echininus 
  nodulosus 
  Pfeiffer 
  ( 
  knotty 
  s 
  de- 
  

   corated 
  with 
  rows 
  of 
  pointed 
  knobs.) 
  

  

  d 
  ) 
  Genus 
  Tectarius 
  Va- 
  

   lenciennes 
  1855 
  . 
  (Lat. 
  

   tectum, 
  a 
  roof;roof 
  

   like. 
  Masc. 
  ) 
  (Echinel- 
  

   la 
  Swainson 
  1840 
  is 
  

  

  the 
  sajne.) 
  

  

  Tectarius 
  muricatus 
  Linne 
  (spiny; 
  with 
  

   somewhat 
  sharp 
  nodules.) 
  

  

  II. 
  SUPERFAMILY 
  RISSOACEA 
  

  

  (This 
  superfamily 
  is 
  dedicated 
  to 
  Risso, 
  

   Prance, 
  1777-1845,) 
  

  

  a 
  naturalist, 
  born 
  in 
  Nice, 
  

  

  1, 
  Family 
  Hydrobiidae. 
  (Gr, 
  hydor, 
  water 
  -i-bios, 
  life. 
  Living 
  in 
  water, 
  

  

  a) 
  Genua 
  Hydrobia 
  Hart- 
  

  

  mann 
  

   1 
  

  

  1821. 
  

  

  In 
  John- 
  

   son' 
  s 
  List 
  called 
  

   Paludestrina 
  Orbigny 
  

   1840 
  . 
  (Lat.paludester, 
  

   marshy, 
  swampy.) 
  

   (Pem.) 
  

  

  b) 
  Genus 
  Truncate 
  11a 
  

   Risso 
  1826 
  . 
  [Dimi 
  nu- 
  

   tive 
  of 
  Lat, 
  trunca- 
  

   tus, 
  cut 
  off, 
  broken 
  

   off; 
  having 
  lost 
  the 
  

   point 
  of 
  the 
  spire. 
  

   Common 
  name: 
  Looping 
  

   Snails, 
  Pem.) 
  

  

  Hydrobia 
  la 
  evis 
  D 
  eKay 
  ( 
  sm 
  o 
  o 
  t 
  h 
  , 
  ) 
  

   Hydrobia 
  minuta 
  Totten 
  (minute, 
  very 
  

  

  small; 
  1/4 
  of 
  an 
  inch.) 
  

   Hydrobia 
  salsa 
  Pilsbry 
  (salty; 
  lives 
  in 
  

  

  salt-marshes. 
  j 
  

   Hydrobia 
  stimpsoni 
  S. 
  Smith 
  ( 
  St 
  imp 
  son' 
  s 
  ; 
  

  

  mmed 
  for 
  \7illiam 
  Stimpson, 
  an 
  American 
  

  

  zoologist, 
  1832-1872.) 
  

  

  I' 
  Trun 
  ca 
  tella 
  bilabiata 
  Pfeiffer 
  (two-lip; 
  

   outer 
  lip 
  double, 
  ) 
  

  

  Truncatella 
  bilabiata 
  bahamensis 
  C 
  lench 
  

   & 
  T 
  u 
  rne 
  r 
  (from 
  the 
  Bahamas. 
  ) 
  

  

  Truncatella 
  pul 
  chella 
  Pfeiffer 
  (rather 
  

   beautiful; 
  color 
  straw-yellow 
  to 
  light 
  

   amber; 
  numerous 
  axial 
  ribs; 
  formerly 
  

   called 
  T. 
  caribaeensis 
  Sowerby, 
  Carib- 
  

   bean. 
  ) 
  

  

  Trunc 
  atella 
  suc 
  c 
  inea 
  C.B.Adams 
  (amber; 
  

   amber 
  colored. 
  7 
  

  

  Truncatella 
  scalaris 
  Michaud 
  (staircase; 
  

   axial 
  costae 
  prominent 
  making 
  like 
  a 
  

   staircase; 
  formerly 
  called 
  T. 
  c 
  la 
  thru 
  s 
  

   Lowe 
  (trellis-like,) 
  

  

  Trunc 
  atella 
  scalaris 
  piratica 
  Clench 
  & 
  

   Turner 
  (piratical. 
  ) 
  

  

  