﻿65 
  

  

  DESCRIPTIONS 
  OF 
  NEW 
  SPECIES 
  OF 
  BONOVANIA, 
  PISANIA, 
  

   PHENACOLEPAS, 
  AND 
  FISSURELLA. 
  

  

  By 
  G. 
  B. 
  SowERBY, 
  F.L.S. 
  

  

  Bead 
  lith 
  January, 
  1910. 
  

  

  DONOVANIA 
  PASCIATA, 
  n.Sp. 
  

  

  Testa 
  ovato-turrita, 
  imperforata, 
  albida, 
  rufo-fusco 
  lineata 
  ; 
  spira 
  

   elata, 
  yix 
  convexa 
  ; 
  anfractus 
  6, 
  convexi, 
  Kris 
  2, 
  rufo-fuscis 
  conspicue 
  

   nodulosis 
  ornati, 
  aliter 
  spiraliter 
  minus 
  conspicue 
  noduloso-lirati 
  ; 
  

   ultimus 
  ^ 
  longitudinis 
  testae 
  sequans, 
  convexus, 
  basim 
  versus 
  rufo- 
  

   fusco 
  quadrilineatus 
  ; 
  apertura 
  parva, 
  ovata 
  ; 
  peristoma 
  crassiusculum, 
  

   fusco 
  notatum 
  ; 
  columella 
  brevis, 
  rectiuscula 
  ; 
  canalis 
  brevissimus, 
  

   mediocriter 
  latus. 
  Long. 
  6, 
  diam. 
  l;5mm. 
  

  

  Sal. 
  — 
  Goree, 
  West 
  Africa. 
  

  

  Distinguished 
  by 
  haying, 
  on 
  a 
  white 
  ground, 
  two 
  conspicuous 
  

   nodulous 
  reddish-brown 
  ridges 
  on 
  each 
  whorl, 
  and 
  four 
  narrow 
  lines 
  

   of 
  the 
  same 
  colour 
  at 
  the 
  base 
  of 
  the 
  body- 
  whorl. 
  Several 
  specimens 
  

   of 
  this 
  pretty 
  little 
  species 
  were 
  found 
  in 
  the 
  collection 
  of 
  the 
  late 
  

   Mons. 
  Albert 
  Denans, 
  labelled 
  " 
  petits 
  buccins 
  de 
  Goree 
  ". 
  

  

  The 
  Mediterranean 
  species 
  of 
  this 
  little 
  group, 
  named 
  by 
  Bucquoy, 
  

   Eautzenberg, 
  and 
  DoUfus 
  '■'■ 
  Donovania" 
  {= 
  Lachesis, 
  Risso), 
  bear 
  a 
  

   strong 
  similarity 
  one 
  to 
  another, 
  whereas 
  this 
  "West 
  African 
  species 
  has 
  

   a 
  very 
  different 
  aspect. 
  Mons. 
  Dautzenberg, 
  to 
  whom 
  I 
  submitted 
  

   specimens, 
  agrees 
  with 
  me 
  as 
  to 
  its 
  generic 
  position. 
  

  

  PiSANIA 
  LIKOCINCTA, 
  n.sp. 
  

  

  Testa 
  elongato-ovata, 
  fulvescens, 
  fusco 
  irregulariter 
  flammulata 
  ; 
  

   spira 
  elata, 
  leviter 
  convexa 
  ; 
  anfractus 
  convexo 
  - 
  declives, 
  primi 
  

   3-4 
  longitudinaliter 
  nodoso-costati, 
  spiraliter 
  fusco 
  lineati, 
  deinde 
  

   spiraliter 
  lirati, 
  liris 
  latiusculis, 
  leviter 
  planulatis 
  ; 
  anfractus 
  ultimus 
  

   oblongus, 
  convexus 
  ; 
  rostrum 
  breviter 
  recurvum 
  ; 
  apertura 
  latiuscula 
  ; 
  

   columella 
  leviter 
  sinuosa, 
  infra 
  medium 
  obscure 
  uniplicata 
  ; 
  peristoma 
  

   acute 
  dentatum 
  ; 
  canalis 
  brevis, 
  latiusculus. 
  Long. 
  33, 
  diam. 
  15; 
  

   apertura, 
  long. 
  17, 
  lat. 
  6 
  mm. 
  

  

  Bal.—'^ 
  

  

  This 
  shell 
  bears 
  a 
  strong 
  resemblance 
  in 
  form 
  and 
  colouring 
  to 
  

   P. 
  pida, 
  Reeve 
  {Buccinum). 
  Its 
  chief 
  distinguishing 
  feature 
  is 
  found 
  

  

  VOL. 
  IX. 
  — 
  MARCH, 
  1910. 
  5 
  

  

  