﻿141 
  ; 
  

  

  C_L 
  A_S_ 
  S 
  g_E_L_E_g_Y 
  __P__0_D 
  A 
  > 
  

  

  (Gr. 
  pelecys, 
  hatchet 
  -- 
  pous, 
  pod-, 
  foot. 
  The 
  foot 
  looks 
  much 
  like 
  a| 
  

   hatchet.) 
  This 
  Class 
  is 
  also 
  c 
  ailed 
  :LAtiELLIBR^NCHIA 
  (Lat. 
  lamella, 
  a 
  ■ 
  

   small 
  or 
  thin 
  plate 
  -•- 
  Gr. 
  branchia, 
  gills; 
  they 
  have 
  two 
  flat, 
  lamel-, 
  

   liform 
  gills 
  on 
  hoth 
  sides 
  of 
  the 
  body) 
  | 
  B 
  IVALVIA 
  (Lat. 
  bis, 
  twice 
  -•- 
  ' 
  

   valva, 
  leaf, 
  fold 
  (of 
  a 
  door) 
  5 
  shell 
  consists 
  of 
  two 
  valves); 
  A 
  CEPHALA 
  

   (Gr. 
  acephala, 
  headless; 
  mollusks 
  having 
  no 
  evident 
  head; 
  head 
  is 
  not 
  j 
  

   well 
  developed.) 
  I 
  

  

  A. 
  ORDE 
  R 
  PALAEOCONCHA 
  

  

  (Gr. 
  palaios, 
  old, 
  ancient 
  -•- 
  concha, 
  conch.) 
  

  

  SUPEREAMILY 
  SO 
  LEMY 
  ACEA 
  

  

  (Gr. 
  and 
  Lat, 
  solen, 
  pipe, 
  tube, 
  channel 
  -'- 
  Lat. 
  mya, 
  a 
  sea-mussel 
  — 
  

   acea, 
  the 
  termination 
  generally 
  used 
  to 
  designate 
  superfamilies. 
  ) 
  

  

  Family 
  Solem 
  yidae. 
  (Abbreviation 
  for 
  S 
  olenomyidae 
  , 
  which 
  is 
  still 
  

   used 
  by 
  some 
  conchologists. 
  Same 
  etymology 
  as 
  above. 
  Shells 
  so 
  

   called 
  because 
  valves 
  are 
  much 
  elongated.) 
  

  

  ! 
  S 
  olem 
  ya 
  borealis 
  T 
  o 
  tten 
  (northern; 
  found 
  

   f 
  rom 
  "l-^ova 
  Scotia 
  to 
  Connecticut.) 
  

  

  Solemy 
  a 
  o 
  ccidentalis 
  Deshayes 
  ( 
  we 
  s 
  t 
  ern 
  ; 
  

   found 
  from 
  ^Ve'st 
  Coast 
  of 
  Florida 
  to 
  the 
  

   West 
  Indies.) 
  

  

  Solem 
  ya 
  velum 
  Say 
  (Velum 
  is 
  a 
  neuter 
  nouni 
  

   meaning 
  a 
  veil. 
  Veiled 
  Solemya 
  because 
  

   the 
  periostracum 
  overhangs 
  the 
  edge 
  of 
  

   the 
  shell 
  like 
  a 
  veil. 
  Common 
  name: 
  

   Awning 
  shell.) 
  

  

  Sole 
  m 
  ya 
  g 
  ran 
  dis 
  Verr 
  i 
  ll 
  & 
  Bush 
  ( 
  large 
  . 
  ) 
  

  

  B. 
  ORDE 
  R 
  PROTOBRANCHIA 
  

  

  (Gr, 
  protos, 
  first 
  ->- 
  branchia, 
  gills. 
  Gills 
  are 
  very 
  primitive; 
  they 
  

   are 
  flat, 
  plate-like.) 
  

  

  SUPERFAI'CLY 
  MJCULACEA 
  

  

  (Lat, 
  nucula, 
  diminutive 
  of 
  nux, 
  nucis, 
  a 
  small 
  nut.) 
  

  

  1. 
  Family 
  Nuculidae 
  . 
  (Lat. 
  nucula, 
  a 
  small 
  nut.) 
  

  

  aegee 
  n 
  sis 
  Jeffreys 
  (of 
  the 
  AEgean 
  

  

  Genus 
  Solemya 
  La- 
  

   marck 
  1818. 
  (Fern. 
  ) 
  

  

  Nucu 
  la 
  

   SeaTT 
  

  

  I'Tucula 
  at 
  a 
  cellana 
  Sch 
  e 
  nck 
  (meaning 
  un- 
  

   known; 
  formerly 
  listed 
  as 
  Wucula 
  can 
  - 
  

   cellata 
  Jeffreys 
  ( 
  cross-barred, 
  latticed.) 
  

  

  Nucula 
  crenul 
  ata 
  A.Adams 
  (crenulated; 
  

   inside 
  margin 
  crenulate 
  . 
  ) 
  

  

  Nucu 
  la 
  c 
  ule 
  b 
  rens 
  is 
  A.E.S 
  mith 
  (named 
  after 
  

   Gulebra 
  Island, 
  IVest 
  Indies.) 
  

  

  Nucula 
  culebrensis 
  obliterata 
  Dall 
  (era- 
  

  

  