﻿a) 
  Ge 
  nus 
  Pect 
  en 
  Miiller 
  

   1 
  7"7 
  6 
  . 
  TMas 
  c 
  . 
  TTOnly 
  

   two 
  genera, 
  which 
  are 
  

   generally 
  accepted 
  as 
  

   such, 
  are 
  used 
  here, 
  

   "because 
  according 
  to 
  j 
  

   Dr. 
  Abhott 
  the 
  others 
  

   cannot 
  be 
  justified 
  

   on 
  biological 
  grounds] 
  

  

  153 
  

   Pecten 
  muscosus 
  Wood 
  (moss-covered; 
  often, 
  

   covered 
  with 
  a 
  growth 
  of 
  sponge; 
  former-; 
  

   ly 
  called 
  Pecten 
  exasperatus 
  Sowerby 
  ( 
  j 
  

   rough, 
  because 
  its 
  ribs 
  have 
  erect 
  spi- 
  | 
  

   nes. 
  ) 
  

   Pecten 
  phry 
  g 
  ius 
  Pall 
  (Phrygian, 
  of 
  Phry- 
  

  

  gia, 
  a 
  country 
  of 
  Asia 
  Minor.) 
  

   Pect 
  en 
  a 
  ntillarum 
  Recluz 
  (of 
  the 
  Antilles 
  

   Antilleanj 
  found 
  in 
  the 
  Florida 
  Keys 
  and 
  

   West 
  Indies.) 
  

   Pecten 
  eulyratus 
  Bayer 
  (well 
  shaped 
  like 
  

   a 
  lyre; 
  shell 
  compressed, 
  with 
  a 
  great 
  

   number 
  of 
  ribs. 
  ) 
  

   Pecten 
  nodosus 
  Linne 
  (knotty; 
  ribs 
  have 
  

  

  raised 
  knobs 
  . 
  ) 
  

   Pe 
  cte 
  n 
  nodosus 
  fra 
  gosu 
  s 
  Conrad 
  ( 
  Lat 
  . 
  f 
  ra- 
  

   gosus, 
  rocky, 
  rough; 
  shell 
  with 
  rather 
  

   large 
  ribs 
  and 
  narrow 
  interstices.) 
  

   Pecte 
  n 
  magellanicus 
  Gmelin 
  ( 
  named 
  from 
  

   Magellan, 
  the 
  Portuguese 
  navigator. 
  )( 
  Fop 
  

   merly 
  known 
  as 
  Pecten 
  grandis 
  Solander 
  

   (large, 
  giant; 
  it 
  may 
  measure 
  five 
  to 
  

   six 
  inches. 
  ) 
  

   Pecten 
  groen 
  landicus 
  So 
  werby 
  (from 
  Green 
  

  

  land; 
  off 
  Newfoundland.! 
  

   Pec 
  t 
  en 
  stri 
  at 
  us 
  M 
  iiller 
  (marked 
  with 
  stri- 
  

   ae 
  or 
  fine 
  grooves. 
  7" 
  

   Pecten 
  vitreus 
  Gmel 
  in 
  (vitreous, 
  glassy.) 
  

   Pecten 
  leptaleus 
  Verrill 
  (Gr. 
  leptaleos, 
  

   thin, 
  fine, 
  delicate; 
  radial 
  lines 
  very 
  

   thin 
  and 
  delicate.) 
  

   Pect 
  e 
  n 
  nanu 
  s 
  V 
  errill 
  & 
  Bush 
  (dwarf; 
  very 
  

  

  small, 
  7 
  DimTy 
  

   Pecten 
  pustulosus 
  Ve 
  r 
  rill 
  (covered 
  with 
  

  

  blisters, 
  granules.")" 
  

   Pecten 
  r 
  eti 
  c 
  ulus 
  Pall 
  (a 
  small 
  net.) 
  

   Pecten 
  strigillatus 
  Pall 
  (Lat. 
  strigilis, 
  

  

  a 
  scraper; 
  finely 
  furrowed.) 
  

   Pec 
  t 
  en 
  subimbrif 
  e 
  r 
  Verrill 
  & 
  Bush 
  , 
  o 
  r 
  

   imbr 
  i 
  fer 
  Lo 
  ven 
  "["bearing 
  rains; 
  covered 
  

   v/ith 
  small 
  radial 
  ribs 
  and 
  concentric 
  

   ridges, 
  ) 
  

   Pecten 
  d 
  ilectus 
  Verrill 
  & 
  Bush 
  (beloved, 
  

   dear; 
  surface 
  covered 
  with 
  rather 
  regu- 
  

   lar 
  undulations 
  v/hich 
  are 
  crossed 
  by 
  re- 
  

   gular 
  well 
  spaced 
  radial 
  lines.) 
  

   Pecten 
  fragilis 
  Jeffreys 
  ( 
  fragile 
  . 
  ) 
  

   i 
  Pecten 
  undatus 
  Verrill 
  & 
  Smith 
  ( 
  w 
  a 
  ve 
  d 
  , 
  

   I 
  wavy, 
  with 
  concentric 
  furrows 
  and 
  ridgesj) 
  

   ! 
  Pecten 
  sigsbeei 
  Pall 
  ( 
  Sigsbee 
  ' 
  s 
  ; 
  named 
  

   i 
  for 
  Lieutenant 
  Goimnander 
  C. 
  P. 
  Sigsbee, 
  U. 
  

   I 
  S. 
  Navy, 
  of 
  the 
  "Blake", 
  1877-1878.) 
  

   I 
  Pecten 
  dalli 
  E.A. 
  Smi 
  th 
  ( 
  Pall 
  ' 
  s 
  ; 
  named 
  

   ' 
  for'William 
  H. 
  Pall,' 
  an 
  eminent 
  American 
  

   i 
  raalacologist, 
  1845-1927.) 
  

   ' 
  Pecte 
  n 
  pa 
  pyraceus 
  G;abb 
  (paper; 
  glossy, 
  

   ! 
  Y\fith 
  no 
  ribs.y 
  

  

  I 
  Pect 
  en 
  laurenti 
  Gmelin 
  (laurentian, 
  per- 
  

   taining 
  to 
  the 
  St. 
  Lawrence 
  River.) 
  

  

  