﻿188 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  cseteros 
  magnitudine 
  fere 
  exsequante, 
  costis 
  infra 
  basim 
  continuis, 
  

   apertura 
  ovata, 
  peristomate 
  temii, 
  columella 
  simplice. 
  Long. 
  3-25, 
  

   lat. 
  1 
  mm. 
  

  

  Hah. 
  — 
  Bombay 
  (Abercrombie). 
  

  

  A 
  very 
  delicate 
  little 
  species, 
  very 
  finely 
  longitudinally 
  lirately 
  

   ribbed, 
  ribs 
  close, 
  interstices 
  also 
  finely 
  striate. 
  Our 
  specimens 
  are 
  

   slightly 
  beach-worn. 
  

  

  TURBONILLA 
  OLIGOPLEURA,' 
  n.sp. 
  PL 
  V, 
  Fig. 
  4. 
  

  

  T. 
  testa 
  fusiformi, 
  pellucida, 
  albo- 
  cornea, 
  delicatula, 
  Isevi, 
  anfractibus 
  

   ad 
  8, 
  quorum 
  apicalis 
  parvus, 
  heterostrophus, 
  cseteris 
  ad 
  suturas 
  

   multum 
  impressis, 
  gradatulis, 
  ad 
  medium 
  anfractuum 
  pauUum 
  

   constrictis, 
  undique 
  paucicostatis, 
  costis 
  rectis, 
  superne, 
  spiraliter 
  

   gemmulatis, 
  ultimo 
  anfractu 
  fere 
  evanidis, 
  prsecipue 
  prope 
  apeituram, 
  

   apertui'a 
  ovata, 
  labro 
  tenui, 
  columella 
  pauUum 
  incrassata, 
  recta, 
  

   simplice. 
  Long. 
  5, 
  lat. 
  r75mni. 
  

  

  Hah. 
  — 
  P.G. 
  Gulf 
  of 
  Oman, 
  198 
  fathoms, 
  dredged 
  alive, 
  in 
  various 
  

   Jes 
  of 
  growth. 
  

  

  Ln 
  abbreviate 
  form, 
  thin, 
  horny, 
  white, 
  that 
  may 
  not 
  have 
  attained 
  

   a 
  perfectly 
  adult 
  stage. 
  It 
  is 
  conspicuous 
  for 
  its 
  few 
  ribs 
  ; 
  around 
  the 
  

   last 
  whorl 
  there 
  are 
  not 
  more 
  than 
  14-15, 
  and 
  some 
  of 
  these 
  are 
  

   partly 
  evanescent. 
  We 
  figure 
  the 
  most 
  mature 
  example 
  ; 
  nine 
  or 
  

   ten 
  others 
  are 
  smaller, 
  and 
  do 
  not 
  possess 
  more 
  than 
  five 
  whorls. 
  In 
  

   all, 
  the 
  nuclear 
  whorls 
  are 
  somewhat 
  small, 
  globular, 
  smooth, 
  and 
  

   white. 
  We 
  had 
  in 
  error 
  supposed 
  this 
  to 
  be 
  T. 
  Velami, 
  Tryon 
  = 
  

   scalarts, 
  Yelain, 
  from 
  St. 
  Paul's 
  Hocks. 
  

  

  TUKBONILLA 
  PACHTPLEURA,^ 
  n.Sp. 
  PL 
  Y, 
  Fig. 
  5. 
  

  

  T. 
  testa 
  mediocri, 
  incrassata, 
  aciculato 
  - 
  attenuata, 
  alba, 
  rudi, 
  

   anfractibus 
  12, 
  quorum 
  apicales 
  duo 
  vel 
  tres 
  reversi, 
  heterostrophi, 
  

   cseteris 
  multum 
  ad 
  suturas 
  impressis, 
  tumidulis, 
  undique 
  Isevicostatis, 
  

   costis 
  crassis, 
  interdum 
  varicosis, 
  interstitiis 
  laevibus, 
  quarto, 
  quinto, 
  

   et 
  sexto 
  anfractibus 
  arctissime 
  costatis, 
  ultimo 
  infra 
  peripheriam 
  

   angulato, 
  Isevi, 
  15 
  costato, 
  apertura 
  ovata, 
  peristomate 
  incrassato, 
  

   \ 
  columella 
  recta. 
  Long. 
  8, 
  lat. 
  2 
  mm. 
  

  

  Hah.—T.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  58' 
  N., 
  long. 
  56° 
  54' 
  E., 
  

   156 
  fathoms. 
  

  

  One 
  of 
  the 
  large 
  and 
  coarse 
  species, 
  quite 
  smooth, 
  twelve- 
  whorled, 
  

   including 
  two 
  or 
  three 
  nuclear, 
  heterostrophe, 
  and 
  pupiforai, 
  the 
  

   whorl^.are 
  tumid, 
  ribs 
  thick, 
  occasionally 
  varixed, 
  mouth 
  oval, 
  lip 
  

   thickened, 
  columella 
  straight. 
  It 
  but 
  rarely 
  occurred 
  in 
  the 
  above 
  

   dredging. 
  

  

  TuRBONiLLA 
  Phyllidis, 
  n.sp. 
  PL 
  Y, 
  Fig. 
  6. 
  

  

  T. 
  testa 
  pro 
  genere 
  conspicua, 
  attenuata, 
  pergracili, 
  Isevissima, 
  

   Candida, 
  delicatula, 
  anfractibus 
  16, 
  quorum 
  duo 
  nucleares 
  erecti, 
  

   heterostrophi, 
  bulbosi, 
  vitrei, 
  cseteris 
  arete 
  longitudinaliter 
  costulatis, 
  

  

  ' 
  6\LyoTr\evpos, 
  few 
  ribbed. 
  - 
  TraxvnXevpos, 
  thick-ribbed. 
  

  

  