﻿from 
  the 
  Lesser 
  Antilles. 
  405 
  

  

  14. 
  Cylindrella 
  costata, 
  Guilding, 
  

  

  Cylindrella 
  costata, 
  Pfeiffer, 
  Philippi's 
  Abbild. 
  vol. 
  i. 
  p. 
  183, 
  pi. 
  i. 
  

   fig. 
  16, 
  vol. 
  ii. 
  p. 
  52, 
  pi. 
  ii. 
  fig. 
  8 
  ; 
  Conch.-Cab. 
  pi. 
  v. 
  figs. 
  4-0 
  ; 
  II. 
  & 
  

   A. 
  Adams, 
  Geu. 
  Moll. 
  pi. 
  lxxvi. 
  fig. 
  7. 
  

  

  Hah. 
  Barbados, 
  St. 
  Lucia 
  [Tate). 
  

  

  *15. 
  Helicina 
  Ramagei. 
  

  

  Testa 
  depresso 
  conica, 
  tenuicula, 
  virenti-flavida, 
  apicem 
  versus 
  

   rubescens, 
  vel 
  superneomnino 
  rubescens, 
  nitida, 
  lineis 
  longitudin- 
  

   alibus 
  obliquis, 
  confertissimis, 
  microscopieis 
  ornata 
  ; 
  anfractus 
  4^, 
  

   convexiusculi, 
  striis 
  increinenti 
  tenuissimis 
  sculpti, 
  ultimus 
  ad 
  

   peripheriam 
  rotundatus 
  ; 
  apertura 
  leviter 
  obliqua 
  ; 
  peristoma 
  

   tenue, 
  expansum, 
  intus 
  paulo 
  a 
  margine 
  incrassatum, 
  ad 
  columel- 
  

   lam 
  angulatum, 
  marginibus 
  callo 
  tenui, 
  semicirculari, 
  uitido, 
  

   juuctis. 
  Operculum 
  in 
  medio 
  leviter 
  concavum, 
  rlavidnm, 
  mar- 
  

   ginem 
  externum 
  versus 
  rufo-sanguineum. 
  

  

  Diam. 
  maj. 
  13| 
  millim., 
  min. 
  11 
  ; 
  alt. 
  9. 
  

  

  This 
  is 
  a 
  thin 
  glossy 
  species 
  devoid 
  of 
  sculpture, 
  excepting 
  

   the 
  fine 
  lines 
  of 
  growth. 
  The 
  excessively 
  fine 
  lineation 
  is 
  

   invisible 
  to 
  the 
  naked 
  eye 
  and 
  most 
  conspicuous 
  under 
  the 
  

   lens 
  on 
  the 
  last 
  whorl. 
  The 
  form 
  is 
  somewhat 
  near 
  that 
  of 
  

   //. 
  antiilarum, 
  Sowerby. 
  

  

  *16. 
  Helicina 
  roseolabrum. 
  

  

  Testa 
  parva, 
  globoso-depressa, 
  solidiuscula, 
  subnitida, 
  grisea 
  vel 
  

   roseo-grisea, 
  interdum 
  linea 
  angusta 
  rubra 
  ad 
  peripheriam 
  cincta 
  ; 
  

   anfractus 
  4i, 
  vix 
  convexiusculi, 
  striis 
  incrementi 
  obliquis, 
  aliis- 
  

   que 
  minutis 
  oblique 
  transversis 
  sculpti, 
  ultimus 
  in 
  medio 
  acute 
  

   rotundatus, 
  antice 
  levissime 
  descendeas 
  ; 
  apertura 
  parva, 
  parum 
  

   obliqua 
  ; 
  peristoma 
  tenue, 
  anguste 
  expansum, 
  vix 
  rerlexum, 
  

   roseo-rut'um, 
  marginibus 
  callo 
  tenui 
  rufo 
  junctis. 
  

  

  Diam. 
  maj. 
  6 
  millim., 
  min. 
  5 
  ; 
  alt. 
  4|. 
  

  

  Pfeiffer's 
  figure 
  of 
  H. 
  Dysoni 
  (Conch.-Cab. 
  pi. 
  viii. 
  fig. 
  27) 
  

   will 
  be 
  a 
  guide 
  as 
  to 
  the 
  form 
  of 
  this 
  species. 
  The 
  coloured 
  

   lip 
  and 
  basal 
  callus 
  and 
  the 
  small 
  size 
  are 
  characters 
  which 
  

   well 
  distinguish 
  this 
  from 
  other 
  species. 
  Of 
  the 
  three 
  speci- 
  

   mens 
  under 
  examination 
  two 
  have 
  the 
  peripheral 
  band, 
  the 
  

   other 
  being 
  of 
  a 
  uniform 
  vinous-grey 
  tint. 
  

  

  17. 
  Helicina 
  plicatula, 
  PfeifTer. 
  

  

  Helicina 
  plicatula, 
  Pfeiffer, 
  Conch. 
  Cab. 
  p. 
  13, 
  pi. 
  viii. 
  figs. 
  39-42 
  ; 
  

   Sowerby, 
  Thesaurus, 
  vol. 
  iii. 
  pi. 
  2G8. 
  figs. 
  79, 
  80. 
  

  

  Hah. 
  Martinique; 
  St. 
  Lucia 
  {Tate) 
  ; 
  Dominica 
  (Gappy). 
  

   Ann. 
  & 
  Mag. 
  N. 
  Hist. 
  Ser. 
  6. 
  Vol. 
  iii. 
  28 
  

  

  