﻿Barnacles 
  from 
  Irish 
  Seas. 
  

  

  589 
  

  

  S. 
  velutinum, 
  which 
  is 
  closely 
  related 
  to 
  S. 
  forma}, 
  Ales- 
  

   sandri, 
  of 
  the 
  Italian 
  Miocene*, 
  is 
  common 
  on 
  both 
  sides 
  of 
  

   the 
  Atlantic 
  in 
  northern 
  latitudes, 
  and 
  has 
  been 
  taken 
  as 
  far 
  

   south 
  as 
  Tristan 
  d'Acunha. 
  It 
  also 
  occurs 
  in 
  the 
  Indian 
  

   Ocean. 
  The 
  bathy 
  metric 
  range 
  is 
  extraordinary 
  — 
  from 
  35 
  to 
  

   over 
  1000 
  fathoms. 
  The 
  Irish 
  collection 
  includes 
  five 
  speci- 
  

   mens 
  (the 
  largest 
  with 
  a 
  capitular 
  length 
  of 
  27 
  mm.) 
  from 
  

   S. 
  R. 
  363, 
  51° 
  22' 
  N., 
  12° 
  0' 
  W., 
  695-720 
  fathoms. 
  

  

  The 
  new 
  species 
  appears 
  to 
  be 
  most 
  nearly 
  related 
  to 
  

   Scalpellum 
  gemma, 
  Aurivillius, 
  and 
  Scalp 
  ellum 
  grimaldi 
  of 
  

   the 
  same 
  author, 
  but 
  possesses 
  two 
  extra 
  valves 
  below 
  the 
  

   rostrum 
  and 
  a 
  narrower 
  carina. 
  S. 
  gemma 
  was 
  described 
  

   from 
  Greenland 
  and 
  S. 
  grimaldi 
  from 
  the 
  Azores. 
  

  

  Scalpellum 
  (Smilium) 
  kempi, 
  sp. 
  n. 
  

  

  Capitulum 
  large, 
  triangular, 
  moderately 
  compressed, 
  

   bearing 
  15 
  stout 
  white 
  valves, 
  which 
  are 
  more 
  or 
  less 
  imbricate 
  

   and 
  project 
  at 
  the 
  tips. 
  Carina 
  straight, 
  narrowly 
  triangular 
  

  

  Scalpellum 
  {Smilium) 
  kempi, 
  sp. 
  n. 
  X 
  3. 
  

  

  in 
  lateral 
  view, 
  bluntly 
  keeled 
  posteriorly, 
  bearing 
  about 
  six 
  

   transverse 
  ridges 
  and 
  distinctly 
  striated 
  vertically. 
  Terga 
  

   vertical, 
  triangular, 
  large, 
  occupying 
  more 
  than 
  half 
  the 
  

   capitular 
  area, 
  slightly 
  retroverted 
  at 
  the 
  tip, 
  having 
  a 
  

   distinct 
  vertical 
  keel 
  along 
  the 
  middle 
  line. 
  Scuta 
  resembling 
  

  

  * 
  See 
  Pilsbry, 
  Bull. 
  U.S. 
  Nat. 
  Mus. 
  no. 
  60, 
  p. 
  26 
  (1907;. 
  

  

  