﻿18 
  PROCEEDINGS 
  OF 
  THE 
  MALA.COLOGICAL 
  SOCIETr. 
  

  

  The 
  E. 
  callosa 
  of 
  Eeeve 
  ' 
  I 
  have 
  already 
  shown 
  to 
  be 
  a 
  small 
  

   example 
  of 
  E. 
  loivis. 
  I 
  have 
  not 
  quoted 
  Weinkauff's 
  figures 
  (pi. 
  xxv, 
  

   figs. 
  2, 
  3), 
  as 
  they 
  do 
  not 
  represent 
  the 
  form 
  of 
  the 
  true 
  callosa, 
  perhaps 
  

   the 
  artist's 
  fault, 
  being 
  too 
  broad 
  at 
  the 
  shoulder, 
  and 
  the 
  aperture, 
  

   described 
  in 
  the 
  text 
  " 
  latiuscula", 
  is 
  too 
  broad 
  anteriorly. 
  On 
  the 
  

   contrary, 
  the 
  mouth 
  in 
  this 
  species 
  is 
  narrow, 
  linear, 
  and 
  not 
  at 
  all 
  

   dilated 
  in 
  front. 
  

  

  The 
  typical 
  colour 
  is 
  described 
  as 
  " 
  carnea, 
  subtus 
  albicante", 
  but 
  

   some 
  specimens 
  are 
  olivaceous 
  dorsally, 
  interrupted 
  with 
  a 
  pale 
  line 
  

   at 
  the 
  shoulder. 
  

  

  A 
  feature 
  which 
  is 
  fairly 
  constant 
  is 
  a 
  pale-brown 
  edge 
  to 
  the 
  

   anterior 
  canal. 
  As 
  in 
  other 
  species 
  of 
  the 
  genus 
  there 
  is 
  considerable 
  

   variation 
  in 
  the 
  size 
  of 
  specimens. 
  Large 
  examples 
  are 
  7 
  mm. 
  in 
  

   length, 
  whilst 
  some 
  small 
  ones 
  are 
  only 
  4^ 
  mm. 
  

  

  XJnder 
  E. 
  sulcifera 
  I 
  have 
  shown 
  that 
  Reeve's 
  and 
  Sowerby's 
  

   identification 
  of 
  that 
  species 
  was 
  erroneous, 
  and 
  that 
  the 
  shells 
  

   depicted 
  by 
  them 
  were 
  in 
  fact 
  worn 
  examples 
  of 
  the 
  present 
  species. 
  

  

  Yar. 
  KECONDiTA, 
  Melvill 
  «& 
  Standen. 
  

   Erato 
  recondita, 
  M, 
  & 
  St., 
  Ann. 
  ^lag. 
  Nat. 
  Hist., 
  1903, 
  vol. 
  xii, 
  p. 
  302, 
  

   pi. 
  xxi, 
  figs. 
  9, 
  10. 
  

  

  Hab.—GviM 
  of 
  Oman, 
  156 
  fathoms 
  (M. 
  & 
  St.) 
  ; 
  China 
  (Brit. 
  Mus.). 
  

  

  There 
  is 
  very 
  little 
  to 
  distinguish 
  this 
  variety 
  from 
  the 
  var. 
  callosa 
  

   excepting 
  the 
  entire 
  absence 
  of 
  colour, 
  and 
  the 
  labrum 
  is 
  perhaps 
  

   a 
  little 
  more 
  produced 
  behind. 
  The 
  number 
  of 
  denticles 
  upon 
  it 
  is 
  

   the 
  same, 
  about 
  twenty 
  to 
  twenty-two, 
  the 
  columella 
  is 
  indistinctly 
  

   denticulate 
  in 
  the 
  same 
  manner, 
  and 
  the 
  whorl 
  within 
  the 
  crenate 
  

   edge 
  is 
  similarly 
  excavated 
  (" 
  Columella 
  excavata," 
  Ad. 
  & 
  E.ve.). 
  No 
  

   mention 
  is 
  made 
  by 
  Melvill 
  & 
  Standen 
  of 
  the 
  columellar 
  denticulation, 
  

   but, 
  although 
  indistinct, 
  about 
  twenty 
  faint 
  denticles 
  are 
  observable 
  

   in 
  one 
  specimen 
  under 
  a 
  strong 
  lens. 
  A 
  few 
  upon 
  the 
  anterior 
  end 
  

   are 
  quite 
  distinct. 
  The 
  var. 
  haplochila 
  I 
  regard 
  merely 
  as 
  an 
  un- 
  

   developed 
  young 
  shell, 
  and 
  although 
  described 
  as 
  having 
  a 
  simple 
  

   non-denticulate 
  labrum, 
  fine 
  incipient 
  denticles 
  are 
  present 
  in 
  the 
  type- 
  

   specimen, 
  as 
  shown 
  in 
  the 
  figure 
  (fig. 
  10). 
  The 
  number 
  of 
  labral 
  

   denticles 
  in 
  fig. 
  9 
  is 
  considerably 
  exaggerated. 
  Four 
  specimens 
  from 
  

   China 
  lately 
  added 
  to 
  the 
  Museum 
  collection 
  agree 
  in 
  all 
  respects 
  with 
  

   those 
  from 
  the 
  Uulf 
  of 
  Oman. 
  They 
  have 
  the 
  appearance 
  also 
  of 
  being 
  

   from 
  deep 
  water. 
  

  

  12. 
  Erato 
  Sandwichensis, 
  Pease 
  (emend.). 
  

  

  Erato 
  Sandivicensis, 
  Pease, 
  Proc. 
  Zool. 
  Soc, 
  1860, 
  p. 
  146; 
  Reeve 
  (b), 
  

   figs. 
  I7a-b; 
  Tryon, 
  p. 
  9, 
  pi. 
  iv, 
  fig. 
  35 
  (after 
  Sowerby). 
  

  

  E. 
  Sandwichensis, 
  Sowerby 
  {b), 
  p. 
  82, 
  figs. 
  21, 
  22; 
  Weinkauff, 
  p. 
  154, 
  

   pi. 
  xxvi, 
  figs. 
  14, 
  15 
  (after 
  Reeve); 
  Martens 
  & 
  Langkavel, 
  

   Donum 
  Bismarck, 
  p. 
  20, 
  pi. 
  i, 
  figs. 
  13a-b 
  (bad). 
  

   I£ab. 
  — 
  Sandwich 
  Islands. 
  

  

  ' 
  Lischke, 
  loc. 
  cit., 
  also 
  remarks 
  upon 
  the 
  difference 
  between 
  Eeeve's 
  shell 
  and 
  the 
  

   true 
  callosa. 
  

  

  