﻿a) 
  Genus 
  Cuspidaria 
  

   Nardo 
  1840. 
  (Fern.) 
  

  

  b) 
  Genus 
  

  

  Adams 
  

  

  Leiomya 
  A. 
  

   ;i364. 
  (Gr. 
  

  

  leios, 
  

   mya, 
  a 
  

   Pern, 
  ) 
  

  

  smooth 
  -■■- 
  

   sea-mussel. 
  

  

  c) 
  

  

  Genus 
  Ilyoner 
  a 
  Pall 
  & 
  

   Smith 
  1886 
  . 
  {Trom 
  

   mya, 
  a 
  sea-mussel 
  — 
  

   neaira, 
  Neaera, 
  a 
  

   nymph 
  (name 
  used 
  by 
  

   Gray 
  for 
  a 
  Cuspida- 
  

   ria, 
  Fern.) 
  

  

  185 
  i 
  

  

  Cuspidaria 
  gigantea 
  Verrill 
  (gigantic.) 
  | 
  

  

  Cuspidaria 
  glacialis 
  Sars 
  (glacial; 
  Gulfj 
  

   of 
  St. 
  Lawrence 
  to 
  Florida.) 
  j 
  

  

  Cuspidaria 
  .jeffreysi 
  Pall 
  (Jeffreys' 
  ;na-j 
  

   raed 
  for 
  John 
  Gwynn 
  Jeffreys, 
  a 
  British 
  { 
  

   malacologist, 
  1809-1885.) 
  ] 
  

  

  Cuspidaria 
  lamellosa 
  M. 
  Sars 
  (having 
  conf 
  

   centric 
  lamellae 
  on 
  valves.) 
  ■ 
  

  

  Cuspidaria 
  media 
  Verrill 
  & 
  Bush 
  (middle;! 
  

   shell 
  of 
  moderate 
  size, 
  resembling 
  a 
  * 
  

   medium- 
  si 
  ze 
  d 
  Cuspidaria 
  glacialis 
  in 
  

   form; 
  about^one-half 
  inch 
  in 
  length.) 
  

  

  Cuspidaria 
  microrhina 
  Pall 
  (Gr, 
  micros, 
  

   small 
  -<- 
  rhine, 
  a 
  file; 
  shell 
  rather 
  

   smooth, 
  ) 
  

  

  Cuspidaria 
  obesa 
  Lov^n 
  (fat; 
  swollen.) 
  

  

  Cuspidaria 
  parva 
  Verrill 
  & 
  Bush 
  ( 
  sma 
  1 
  1 
  ; 
  

   shell 
  small, 
  delicate; 
  length 
  4.5 
  mm.) 
  

  

  Cuspidaria 
  pellucida 
  Stimpson 
  (very 
  

   bright; 
  shell 
  pale 
  white; 
  smooth 
  and 
  

   glossy 
  within. 
  ) 
  

  

  Cuspidaria 
  rostrata 
  Spengler 
  (rostrate; 
  

   having 
  a 
  long, 
  narrow 
  handle 
  . 
  ) 
  

  

  Cuspidaria 
  subtorta 
  Sars 
  (somewhat 
  twis- 
  

   ted; 
  shell 
  inequivalve; 
  the 
  rostrum 
  is 
  

   a 
  little 
  bent 
  to 
  the 
  left 
  and 
  appears 
  

   slightly 
  twisted.) 
  

  

  Cuspidaria 
  turgida 
  Verrill 
  & 
  Bush 
  (in- 
  

   flated, 
  swollen; 
  distended; 
  shell 
  rathet 
  

   large 
  . 
  ) 
  

  

  Cuspidaxia 
  undata 
  Verrill 
  (waved; 
  strong- 
  

   ly 
  undulated. 
  ) 
  

  

  Cuspidaria 
  ventricosa 
  Verrill 
  & 
  Bush 
  

   ( 
  swelling 
  out, 
  bellied; 
  shell 
  large, 
  

   swollen, 
  with 
  a 
  ventral 
  enlargement.) 
  

  

  Le 
  i 
  omya 
  granulata 
  Pall 
  (granulated; 
  co- 
  

   vered 
  with 
  grain-like 
  elevations.) 
  

  

  Leiomya 
  granula 
  t 
  a 
  velvetina 
  Pall 
  ( 
  vel- 
  

   vety, 
  smooth. 
  ) 
  

  

  Leiom 
  ya 
  halimera 
  Pall 
  (Gr. 
  halimos, 
  of 
  ; 
  

   the 
  sea. 
  ) 
  ; 
  

  

  Leiomya 
  claviculata 
  Pall 
  (with 
  a 
  clavicle*^ 
  

   a 
  bar; 
  having 
  a 
  ridge 
  inside 
  serving 
  to 
  J 
  

   reinforce 
  the 
  hinge.) 
  

  

  Leiomya 
  striatel 
  l 
  a 
  Verrill 
  & 
  Bus 
  h( 
  cover- 
  

   ed 
  with 
  fine, 
  raised 
  concentric 
  lines.) 
  i 
  

  

  llyoner 
  a 
  gi 
  g 
  antea 
  Verrill 
  (giant.) 
  

   I'jiyonera 
  lamellifera 
  Pall 
  (having 
  lamellae^ 
  

  

  ornamented 
  with 
  about 
  33 
  thin 
  concentric 
  

  

  lamellae. 
  ) 
  

   IJyonera 
  limatula 
  Pall 
  (smooth; 
  fine, 
  low 
  

  

  elevated 
  sculpture 
  , 
  ) 
  

   IvCyonera 
  pauci 
  striata 
  Pall 
  (with 
  a 
  few 
  

  

  faint 
  radiating 
  striae, 
  ) 
  

   I^iy 
  oner 
  a 
  pretiosa 
  Verrill 
  & 
  Bush 
  (precious 
  

  

  shell 
  sma.ll, 
  very 
  thin 
  and 
  fragile, 
  

  

  nearly 
  transparent.) 
  

  

  