﻿t) 
  

  

  c) 
  

  

  Genus 
  Bltti 
  u 
  m 
  Leac 
  h 
  

   1847. 
  (FJw 
  Bittion, 
  

   a 
  feminine 
  proper 
  

   name. 
  On 
  account 
  of 
  

   its 
  neuter 
  ending 
  

   Conchologists 
  make 
  

   it 
  neuter. 
  ) 
  

  

  Genus 
  Litiopa 
  Rang 
  

   1829. 
  (Gr. 
  litos, 
  

   smooth, 
  plain, 
  sim- 
  

   ple 
  -- 
  ope, 
  hole, 
  

   aperture. 
  Common 
  

   name: 
  Simple 
  Mouth 
  

   Shells. 
  ;Fem, 
  ) 
  

  

  d) 
  G 
  enus 
  Alah 
  a 
  H.&; 
  A. 
  r 
  

   Adams 
  185 
  3. 
  ( 
  Gr.ala- 
  

   ba, 
  coal-dust, 
  soot; 
  I 
  

   the 
  first 
  five 
  or 
  j 
  

   six 
  whorls 
  are 
  dark 
  

   colored, 
  the 
  re- 
  

   mainder 
  whitish 
  or 
  

   ashy, 
  often 
  marked 
  

   with 
  brownish, 
  Pem.) 
  

  

  42 
  

   Cerithium 
  lymani 
  Pilsbry 
  (named 
  for 
  

   Frank 
  Lyman 
  of 
  Lantana, 
  Florida, 
  who 
  

   collected 
  the 
  specimen.) 
  Formerly 
  known 
  

   as 
  Thericium 
  lymani 
  , 
  

   ! 
  Cerithium 
  muscarum 
  Say 
  (of 
  the 
  flies;has 
  

   j 
  small 
  "brown 
  dots 
  on 
  a 
  white 
  background.) 
  

   I 
  Cerithium 
  uncinatum 
  Gmelin 
  (bent, 
  curved 
  |! 
  

   I 
  basal 
  canal 
  recurved.") 
  t 
  

  

  j 
  Cerithium 
  variabile 
  C.B.Adams 
  (variable; 
  ! 
  

   I 
  color 
  brownish 
  or 
  blackish, 
  often 
  with 
  ! 
  

   |_ 
  white. 
  ) 
  i 
  

  

  I 
  Bittium 
  alternatum 
  Say 
  (alternate; 
  the 
  

   j 
  upper 
  whorls 
  of 
  a 
  blue-black 
  or 
  slate 
  

   color, 
  and 
  two 
  or 
  three 
  of 
  the 
  lower 
  o- 
  

   nes 
  usually 
  much 
  lighter, 
  white 
  or 
  ash 
  

   gray, 
  write 
  Gould 
  & 
  Binney.) 
  

  

  Bittium 
  varium 
  Pfeiffe 
  r 
  (varied; 
  color 
  

   varying 
  from 
  purplish 
  white 
  to 
  purple 
  

   brown. 
  ) 
  

  

  Bittium 
  virginicum 
  Henderson 
  & 
  Bartsc 
  h 
  

   (Virginian; 
  from 
  Chincoteague 
  Bay, 
  Vir- 
  

   ginia. 
  ) 
  

  

  Bit 
  t 
  i\;im 
  adamsi 
  Pall 
  ( 
  Adams 
  ' 
  . 
  ) 
  

  

  Bi 
  t 
  tium 
  cer 
  i 
  thidioides 
  Pall 
  (resembling 
  

   a 
  Cerithidea; 
  "this 
  shell 
  has 
  a 
  strong 
  

   resemblance 
  to 
  a 
  minute 
  Cerithidea", 
  

   writes 
  Ball. 
  The 
  Gr. 
  ending 
  "oides" 
  is 
  

   masc, 
  fem,, 
  and 
  neuter. 
  Cerithidioide 
  

   is 
  not 
  correct.) 
  

  

  Litiopa 
  basistriata 
  Rang 
  (with 
  the 
  base 
  

  

  striated; 
  base 
  with 
  ten 
  or 
  more 
  sharply 
  

  

  cut 
  striae.) 
  

   Litiopa 
  melano 
  stoma 
  Rang 
  (black 
  mouth; 
  

  

  shell 
  light 
  brown; 
  ) 
  also 
  called 
  Litiopa 
  

  

  b 
  ombyx 
  Ran 
  g 
  ( 
  silk^,7orm. 
  ) 
  

   Litiopa 
  striata 
  Pfeiffer 
  (striate.) 
  

  

  Alaba 
  conoidea 
  Pal 
  l 
  (resembling 
  a 
  cone; 
  

  

  conic. 
  ) 
  

   Alaba 
  tervaricosa 
  C.B.Adams 
  (with 
  three 
  

  

  varices; 
  there 
  are 
  several 
  varices 
  on 
  

  

  the 
  whorls. 
  ) 
  

  

  Cerithiopsis 
  crystallina 
  Pall 
  (res 
  emb 
  ling 
  

  

  a 
  crystal; 
  shell 
  translucent 
  vvhite.) 
  , 
  

   Cerithiopsis 
  greeni 
  C.B.Adams 
  ( 
  named 
  for 
  ! 
  

  

  Jacob 
  Green, 
  an 
  American 
  naturalist, 
  

  

  1790-1841.) 
  

   Cerithiopsis 
  georgiana 
  Pall 
  (collected 
  

  

  off 
  GeorgiaT) 
  

   Cerithiopsis 
  marten 
  s 
  i 
  Pall 
  (dedicated 
  to 
  j 
  

  

  Edward 
  K. 
  von 
  Martens, 
  a 
  German 
  concho- 
  i 
  

  

  legist, 
  1831-1904.) 
  

  

  