﻿REVIEW 
  OF 
  THE 
  ATLANTIC 
  PERIWINKLES 
  — 
  ABBOTT 
  463 
  

  

  Liiin6. 
  It 
  is 
  located 
  at 
  the 
  usual 
  position 
  on 
  the 
  right 
  side 
  of 
  the 
  

   body, 
  and 
  consists 
  of 
  a 
  simple 
  bent, 
  tapering 
  prong 
  which 
  bears 
  a 
  

   thin, 
  seminal 
  groove 
  along 
  its 
  posterior 
  edge. 
  

  

  The 
  radula 
  in 
  one 
  specimen 
  was 
  67 
  mm. 
  in 
  length, 
  with 
  about 
  1,500 
  

   transverse 
  rows 
  of 
  teeth. 
  As 
  in 
  Littorina, 
  the 
  unused 
  rows 
  are 
  coiled 
  

   tightly 
  like 
  a 
  watch 
  spring 
  in 
  a 
  pocket 
  on 
  the 
  dorsal 
  region 
  behind 
  

   the 
  head. 
  The 
  central 
  tooth 
  is 
  about 
  half 
  as 
  wide 
  as 
  long, 
  not 
  unlike 
  

   that 
  in 
  Nodilittorina, 
  and 
  bears 
  a 
  large 
  central 
  cusp 
  with 
  a 
  smaller 
  

   cusp 
  on 
  each 
  side. 
  (See 
  fig. 
  57, 
  d.) 
  

  

  The 
  shell 
  is 
  adequately 
  illustrated 
  in 
  Johnsonia 
  by 
  Clench 
  and 
  

   Abbott 
  (1942). 
  

  

  Geographical 
  distribution. 
  — 
  In 
  addition 
  to 
  the 
  records 
  noted 
  on 
  the 
  

   accompanying 
  map 
  (fig. 
  56, 
  c) 
  of 
  the 
  West 
  Indian 
  region, 
  I 
  am 
  listing 
  

   a 
  few 
  new 
  ones 
  which 
  represent 
  either 
  extensions 
  of 
  the 
  range, 
  addi- 
  

   tional 
  major 
  islands, 
  or 
  the 
  filling 
  in 
  of 
  large 
  gaps 
  (for 
  other 
  records, 
  

   see 
  Clench 
  and 
  Abbott, 
  1942). 
  Distribution 
  in 
  the 
  Caribbean 
  region, 
  

   lower 
  Florida, 
  and 
  Bermuda 
  is 
  almost 
  identical 
  with 
  that 
  of 
  

   Nodilittorina. 
  

  

  New 
  records. 
  — 
  Bahamas: 
  South 
  Bight, 
  Andros 
  Island; 
  Little 
  San 
  

   Salvador 
  Island. 
  Cuba: 
  Matanzas; 
  Cardenas 
  Bay; 
  Port 
  Gibara; 
  

   Santiago 
  de 
  Cuba. 
  Hispaniola: 
  Fort 
  Liberte, 
  Dept. 
  du 
  Nord; 
  Cap 
  

   Haitien, 
  Dept. 
  du 
  Nord; 
  Torbeck 
  and 
  Aquin, 
  Dept. 
  du 
  Sud; 
  Santa 
  

   Barbara 
  de 
  Samana. 
  Jamaica: 
  Buff 
  Bay, 
  Portland; 
  Stony 
  Cave, 
  

   St. 
  Mary; 
  Great 
  Pedro 
  Bay, 
  St. 
  Elizabeth; 
  Runaway 
  Bay, 
  St. 
  Ann; 
  

   Montego 
  Bay, 
  St. 
  James; 
  Morant 
  Bay, 
  St. 
  Thomas; 
  Little 
  Cayman 
  

   Brae 
  (C. 
  R. 
  Orcutt). 
  Puerto 
  Rico: 
  Mayagiiez; 
  Hamacoa. 
  Lesser 
  

   Antilles: 
  Marigot, 
  Dominica. 
  Caribbean 
  Islands: 
  Curagao; 
  

   Aruba. 
  Central 
  America: 
  Utdla 
  Island 
  and 
  Roatan 
  Island, 
  

   Honduras; 
  Col6n, 
  Panamd; 
  Cartagena 
  and 
  Porto 
  Colombia, 
  Colombia; 
  

   Tucacas, 
  Falcon, 
  Venezuela. 
  (AU 
  records 
  USNM.) 
  

  

  