﻿168 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETT. 
  

  

  76. 
  Mangilia 
  aecta 
  (Sm.). 
  (PI- 
  IX, 
  Fig. 
  10.) 
  

  

  Pleurotoma 
  {Daphnella'^) 
  arcta, 
  E. 
  A. 
  Smith, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  

   ser. 
  V, 
  vol. 
  xiv, 
  1884, 
  p, 
  325. 
  

  

  P.G. 
  Type 
  in 
  British 
  Museum 
  collection. 
  

  

  A 
  narrow 
  cytharoid 
  species, 
  evidently 
  a 
  near 
  ally 
  of 
  the 
  protean 
  

   If. 
  gracilenta, 
  lleeve; 
  the 
  granulately 
  cancellate 
  third 
  whorl 
  hints 
  at 
  

   identity 
  with 
  this, 
  and 
  also 
  the 
  form 
  of 
  the 
  mouth 
  and 
  outer 
  lip. 
  But 
  

   the 
  mature 
  shell 
  is 
  more 
  abbreviate 
  and 
  considerably 
  smaller. 
  As 
  

   the 
  author 
  points 
  out, 
  there 
  is 
  much 
  variation 
  in 
  the 
  colour; 
  some 
  

   specimens 
  are 
  white, 
  others 
  reddish, 
  and 
  we 
  have 
  examples 
  from 
  

   Hong-Kong 
  of 
  a 
  dark 
  greenish 
  brown. 
  

  

  77. 
  Mangilia 
  avekina, 
  Melv. 
  & 
  St. 
  

  

  Mangilia 
  averina, 
  Melvill 
  & 
  Standen, 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1901, 
  

   p. 
  441, 
  pi. 
  xxiv, 
  f. 
  15, 
  

  

  I. 
  Karachi. 
  

  

  An 
  ally 
  of 
  M. 
  fairlanlci, 
  G. 
  & 
  H. 
  Nevill, 
  heptagona, 
  Dkr., 
  horneana, 
  

   Sm., 
  etc. 
  Pure 
  white, 
  with 
  strong 
  ribs, 
  crossed 
  by 
  alternate 
  strong 
  

   or 
  weak 
  lirse, 
  gemmuled 
  at 
  the 
  points 
  of 
  junction. 
  The 
  type 
  has 
  the 
  

   outer 
  lip 
  and 
  columellar 
  margin 
  suffused 
  with 
  orange, 
  but 
  I 
  have 
  

   seen 
  a 
  variety 
  with 
  white 
  lip 
  and 
  columella. 
  

  

  78. 
  Mangilia 
  barbiton, 
  Melv. 
  

  

  Mangilia 
  barbiton, 
  Melvill, 
  Proc. 
  Malac. 
  Soc. 
  Lond., 
  vol. 
  vi, 
  1904, 
  

   p. 
  166, 
  pi. 
  X, 
  fig. 
  21. 
  

  

  P.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  58' 
  N., 
  long. 
  56° 
  54' 
  E., 
  156 
  fathoms. 
  

  

  This 
  species 
  seems 
  a 
  link 
  between 
  Mangilia 
  and 
  Cythara, 
  but 
  is 
  

   most 
  probably 
  placed 
  correctly 
  under 
  the 
  former 
  name. 
  A 
  slight 
  

   alliance 
  with 
  the 
  rare 
  M. 
  bathmis, 
  Melv., 
  may 
  also 
  be 
  traced; 
  but 
  

   this 
  species 
  is 
  more 
  gradate, 
  and 
  the 
  sculpture 
  is 
  different. 
  

  

  79. 
  Mangilia 
  bathmis, 
  Melv. 
  

  

  Mangilia 
  bathmis, 
  Melvill, 
  Proc. 
  Malac. 
  Soc, 
  vol. 
  vi, 
  1904, 
  p. 
  57, 
  

   pi. 
  V, 
  f. 
  4. 
  

  

  P.G. 
  Gulf 
  of 
  Oman, 
  lat. 
  24° 
  58' 
  K, 
  long. 
  56° 
  54' 
  E., 
  156 
  fathoms. 
  

  

  Allied 
  to 
  M. 
  barbito7i, 
  Melv., 
  but 
  the 
  longitudinal 
  ribs 
  are 
  far 
  more 
  

   incrassate, 
  and 
  it 
  differs 
  from 
  M. 
  horneana, 
  Sm., 
  in 
  tlie 
  canal 
  being 
  

   much 
  more 
  produced 
  and 
  the 
  spiral 
  ribs 
  prominent. 
  A 
  very 
  rare 
  

   species. 
  

  

  80. 
  Mangilia 
  callicredemna, 
  sp. 
  nov. 
  (PL 
  X, 
  Fig. 
  12.) 
  

  

  M. 
  testa 
  minuta, 
  alba, 
  fulgida, 
  ovato-fusiformi, 
  anfractibus 
  8, 
  

   quorum 
  duo 
  apicales 
  vitrei, 
  perleves, 
  duobus 
  his 
  proximis 
  levibus, 
  

   unicarinatis, 
  caeteris 
  quatuor 
  suturaliter 
  profunde 
  impressis, 
  ad 
  

   medium 
  angulatis, 
  et 
  longitudinaliter 
  costulatis, 
  costis 
  iucrassatis, 
  

   levibus, 
  ad 
  angulum 
  nodulosis, 
  ultimo 
  biangulato, 
  binis 
  ordinibus 
  

   nodularum 
  ad 
  juncturas 
  costarum 
  ornato, 
  deinde 
  ad 
  basim 
  fortiter 
  

   striato, 
  striis 
  ad 
  8-9, 
  apertura 
  oblique 
  ovata, 
  labro 
  tenui, 
  sinu 
  

  

  