﻿778 
  PROCEEDINGS 
  OF 
  THE 
  NA 
  TIONAL 
  MUSE 
  UM. 
  vol. 
  xx. 
  

  

  Family 
  SEMELID^. 
  

  

  ABRA 
  LONGICALLIS 
  (Scacchi), 
  variety 
  AMERICANA, 
  new. 
  

   (Plate 
  LXXXIII, 
  figs. 
  (5, 
  7.) 
  

   Alra 
  longicallis 
  Verrill, 
  Trans. 
  Coun. 
  Acad., 
  VI, 
  pp. 
  224, 
  278, 
  1884. 
  

  

  Our 
  specimens 
  differ 
  from 
  the 
  European 
  form 
  described 
  and 
  figured 
  

   by 
  G. 
  O. 
  Sars' 
  iu 
  having 
  the 
  posterior 
  lateral 
  tooth 
  less 
  remote 
  and 
  the 
  

   cartilage-pit 
  or 
  chondroi)hore 
  longer, 
  the 
  antero-dorsal 
  margin 
  more 
  

   convex, 
  and 
  the 
  whole 
  shell 
  relatively 
  broader. 
  

  

  A 
  very 
  few 
  specimens 
  were 
  obtained 
  at 
  six 
  stations 
  between 
  N. 
  lat. 
  

   39° 
  40', 
  W. 
  long. 
  68° 
  28' 
  30", 
  and 
  :N'. 
  lat. 
  36° 
  16' 
  30", 
  W. 
  long. 
  68° 
  21', 
  in 
  

   924 
  to 
  2,020 
  fathoms, 
  1883-1880. 
  

  

  Family 
  TELLINID.E. 
  

  

  MACOMA 
  INFLATA 
  Dawson. 
  

   (Plates 
  LXXVII, 
  fig. 
  1; 
  LXXXVIII, 
  fig. 
  6.) 
  

  

  Macoma 
  inflaia 
  (Stimpson 
  MSS.) 
  Dawson, 
  Canadian 
  Naturalist, 
  VI, 
  p. 
  377, 
  

   1872.— 
  Verrill, 
  Trans. 
  Conn. 
  Acad., 
  V, 
  p. 
  568, 
  1882. 
  

  

  A 
  number 
  of 
  live 
  specimens 
  and 
  separate 
  valves 
  were 
  obtained 
  at 
  

   six 
  stations 
  between 
  N. 
  hit. 
  17° 
  40', 
  W. 
  long. 
  47^ 
  35' 
  30", 
  and 
  :N^. 
  lat. 
  40° 
  

   3', 
  W. 
  long. 
  70° 
  31', 
  in 
  57 
  to 
  206 
  fathoms, 
  1877-1886. 
  Murray 
  Bay.— 
  

   Dawson. 
  Gulf 
  of 
  St. 
  Lawrence. 
  — 
  Coll. 
  Whiteaves. 
  

  

  Family 
  PETRICOLID^. 
  

  

  CHORISTODON 
  ? 
  CANCELLATUS 
  Verrill. 
  

   (Plate 
  XC 
  VI, 
  figs. 
  2, 
  3.) 
  

  

  Chorisfodon 
  f 
  cancellatiis 
  Vehrill, 
  Trans. 
  Conn. 
  Acad., 
  VI, 
  p. 
  435, 
  1885. 
  — 
  Dall, 
  

   Bull. 
  U. 
  S. 
  Nat. 
  Mns., 
  No. 
  37, 
  p. 
  58, 
  1889. 
  

  

  Que 
  valva, 
  station 
  2265, 
  off 
  Chesapeake 
  Bay, 
  in 
  70 
  fathoms, 
  1884. 
  

   Family 
  KELLIELLIDyE. 
  

  

  KELLIELLA 
  NITIDA 
  Verrill. 
  

  

  (Plates 
  XCI, 
  fig. 
  8; 
  XCIIT, 
  fig. 
  10.) 
  

  

  KellieUa 
  up. 
  Vkrrill, 
  Trans. 
  Conn. 
  Acad., 
  VI, 
  p. 
  279, 
  1884; 
  Expl. 
  Albatross, 
  

  

  Report 
  V. 
  S. 
  Com. 
  Fish 
  and 
  Fisheries 
  lor 
  1883, 
  p. 
  576, 
  1885. 
  

   KellieUa 
  tiitida 
  Veimull, 
  Trans. 
  Conn. 
  Acad., 
  VI, 
  p. 
  438, 
  1885. 
  

  

  Comparatively 
  few 
  specimens, 
  at 
  seven 
  stations 
  between 
  N. 
  lat. 
  39'^ 
  

   5' 
  30", 
  W. 
  long. 
  70O 
  44' 
  30", 
  and 
  N. 
  lat. 
  38° 
  20', 
  W. 
  long. 
  70° 
  8' 
  30", 
  in 
  

   1,525 
  to 
  2,033 
  fathoms, 
  1883-1886. 
  

  

  ' 
  Mollusca 
  Reg. 
  Arcticae 
  Norvegiae, 
  p. 
  74, 
  pi. 
  6, 
  tigs. 
  3 
  a-c; 
  pi. 
  20, 
  fig. 
  4, 
  1878. 
  

  

  