﻿MELVILL 
  : 
  PYEAMIDELLID^ 
  OP 
  THE 
  PERSIAN 
  GULF, 
  ETC. 
  183 
  

  

  TuEBONiLLA 
  Charbarensis, 
  Melvill 
  & 
  Standen, 
  

  

  Tiirhonilla 
  {Pyrgostelis) 
  Charbarensis, 
  Melvill 
  & 
  Standen, 
  Proc. 
  Zool. 
  

   Soc, 
  p. 
  393, 
  pi. 
  xxii, 
  fig. 
  22, 
  1901. 
  

  

  Eab.—M..Q. 
  Charbar. 
  Mekran 
  Coast, 
  7-10 
  fathoms. 
  

  

  A 
  compact 
  species, 
  rufous-ochre, 
  ribs 
  not 
  very 
  pronounced, 
  striate 
  

   at 
  the 
  interstices. 
  Allied 
  to 
  T. 
  rufa, 
  Philippi, 
  which 
  is 
  the 
  type 
  of 
  

   the 
  sub-genus 
  Pyrgiscus, 
  Phil., 
  in 
  which 
  it 
  should 
  probably 
  be 
  likewise 
  

   included. 
  

  

  TtjRBomLLA 
  coLPODEs,^ 
  u.sp. 
  PI. 
  Y, 
  Fig. 
  14. 
  

  

  T. 
  testa 
  pergracili, 
  multum 
  attenuata, 
  alba, 
  parum 
  nitida, 
  solidius- 
  

   cula, 
  anfractibus 
  11-12, 
  quorum 
  apicales 
  heterostrophi, 
  planorbuli, 
  

   laeves, 
  nitidi, 
  caeteris 
  ad 
  suturas 
  impressis, 
  ventricosulis, 
  undique 
  

   longitudinaliter 
  arctissime 
  costatis, 
  costis 
  crassis, 
  Isevibus, 
  oblique 
  

   flexuosis, 
  ultimum 
  apud 
  anfractum 
  infra 
  peripheriam 
  evanidis, 
  et 
  

   deinde 
  usque 
  ad 
  basira 
  concentrice 
  sulcato-liratis, 
  interstitiis 
  spiraliter 
  

   arete 
  striatis, 
  apertura 
  rotundo-ovata, 
  margine 
  columellari 
  incrassato. 
  

   Long. 
  4-50, 
  lat. 
  1-20 
  mm. 
  

  

  Hah. 
  — 
  P.G. 
  Off 
  Mussandam, 
  at 
  50 
  fathoms 
  ; 
  April, 
  1910. 
  

  

  A 
  small 
  but 
  beautifully 
  sculptured 
  species, 
  of 
  thick 
  substance, 
  

   proportionately 
  speaking, 
  the 
  longitudinal 
  ribs 
  being 
  obliquely 
  

   flexuose, 
  with 
  spirally 
  striate 
  interstices 
  ; 
  in 
  this 
  latter 
  particular 
  it 
  

   differs 
  from 
  2\ 
  qucestuosa, 
  microperone, 
  and 
  others 
  possessing 
  oblique 
  

   riblets, 
  the 
  interstitial 
  spaces 
  being 
  generally 
  smooth 
  in 
  these 
  species. 
  

  

  TuRBONiLLA 
  Delia, 
  Melvill. 
  

  

  Turhonilla 
  {Pyrgostelis) 
  Delia, 
  Melvill, 
  Proc. 
  Malac. 
  Soc, 
  vol. 
  vii, 
  

   p. 
  73, 
  pi. 
  viii, 
  fig. 
  30. 
  

  

  Hah. 
  — 
  P.G. 
  Bushire, 
  6-10 
  fathoms, 
  very 
  rarely. 
  

  

  Conspicuous 
  for 
  its 
  remarkably 
  ventricose 
  whorls, 
  yellowish 
  hue, 
  

   and 
  short 
  spire. 
  The 
  shell 
  is 
  smooth, 
  with 
  no 
  interstitial 
  striation. 
  

  

  TuEBONiLLA 
  Emili^, 
  Melvill. 
  

  

  Turhonilla 
  {Pyrgostelis) 
  Emilice, 
  Melvill, 
  Proc. 
  Malac. 
  Soc, 
  vol. 
  ii, 
  

   p. 
  115, 
  pi. 
  viii, 
  fig. 
  20. 
  

  

  Hab. 
  — 
  I. 
  Bombay 
  (Abercrombie). 
  

  

  Avery 
  small 
  species 
  (long. 
  2, 
  lat. 
  •075mm.), 
  with 
  no 
  very 
  leading 
  

   features. 
  It 
  seems 
  to 
  be 
  of 
  the 
  section 
  Pyrgiscus, 
  but 
  shows 
  a 
  leaning 
  

   towards 
  the 
  genus 
  Pyrgulina, 
  in 
  its 
  close 
  ribs 
  and 
  interstitial 
  striation. 
  

  

  Tttebonilla 
  eucteana,^ 
  n.sp. 
  PI. 
  IV, 
  Fig. 
  11. 
  

  

  T. 
  testa 
  parva, 
  attenuata, 
  gracili, 
  Isevissima, 
  pallide 
  straminea, 
  

   anfractibus 
  10, 
  quorum 
  duo 
  apicales 
  inversi, 
  Iseves, 
  vitrei, 
  heterostrophi, 
  

   cseteris 
  regularibus, 
  ad 
  suturas 
  impressis, 
  baud 
  ventricosis, 
  undique 
  

   arete 
  costatis, 
  costis 
  rectis, 
  concinnis, 
  Isevibus, 
  sub 
  lente 
  striis 
  spiraliter 
  

   obscurissimis 
  interstitialiter 
  prseditis, 
  costis 
  ultimi 
  anfractus 
  numero 
  

  

  Ko\irti5T]s, 
  fleiuous, 
  einuoue. 
  ^ 
  evKriavos, 
  graceful. 
  

  

  