﻿MUSSEL 
  EESOUECES 
  OF 
  THE 
  ILLINOIS 
  RIVER. 
  

  

  37 
  

  

  Table 
  9. 
  — 
  Distribution 
  op 
  Mussels 
  at 
  the 
  Principal 
  Stations 
  Along 
  thi 
  

  

  Illinois 
  River. 
  

  

  Mussel 
  species. 
  

  

  Purple 
  warty-back 
  (Quadrula 
  granifera). 
  . 
  

   Purple 
  warty-back 
  (Quadrula 
  tuberculata) 
  

  

  Niggerhead 
  {Quadrula 
  ebcna) 
  

  

  Niggerhead 
  (Quadrula 
  pyramidata) 
  

  

  Niggerhead 
  (Quadrula 
  plena) 
  

  

  Niggerhead 
  ( 
  Quadrula 
  solida) 
  

  

  Thin 
  niggerliead 
  (Quadrula 
  coccinea) 
  

  

  Ohio 
  River 
  pig-toe 
  (Quadrula 
  obligua) 
  .... 
  

  

  Pig-toe 
  (Quadrula 
  trigona) 
  

  

  Wabash 
  pig-too 
  (Quadrula 
  rubiginosa) 
  

  

  Two-homed 
  pocketbook( 
  Quadrula 
  pustulata) 
  

  

  Warty-tjack 
  (Quadrula 
  pustulosa) 
  

  

  Maple-leaf 
  (Quadrula 
  fragosa) 
  

  

  Maple-leaf, 
  stranger 
  (Quadrula 
  lachrymosa) 
  . 
  . 
  

  

  Monkey-face 
  ( 
  Quadrula 
  metanevra) 
  

  

  Washboard 
  (Quadrula 
  hcros) 
  

  

  Blue-point 
  (Qu/idrula 
  undulata) 
  

  

  Three-ridge 
  ( 
  Q 
  uadrula 
  plicata) 
  

  

  BulUiead 
  ( 
  Pleurobcma 
  assopus) 
  

  

  Elephant 
  ear 
  ( 
  Unio 
  crassidens) 
  

  

  Lady-finger, 
  spike 
  ( 
  Unio 
  gibbosus) 
  

  

  Spectacle-case 
  ( 
  Margaritana 
  vionodonta) 
  

  

  White 
  hatcliet-back(S|/wp/!?/no?acompZareato) 
  

  

  Fluted 
  shell 
  (Symphynota 
  costata) 
  

  

  Rock-sheU, 
  queen 
  (Arcidcns 
  confragosus) 
  

  

  Rock-shell, 
  queen 
  (Anodonta 
  corpulenta) 
  

  

  Floater 
  (^nodoH/a 
  grandis) 
  

  

  Floater 
  {Anodonta 
  suborbiculata) 
  

  

  Floater 
  (Anodonta 
  imbecilUs) 
  

  

  Squaw-foot 
  (Strophitus 
  edentulus) 
  

  

  Three-horned 
  shell 
  (Obliquaria 
  rcflexa) 
  

  

  Pistol-grip, 
  buckhorn 
  (Tritogonia 
  tuberculata) 
  

   Pistol-grip, 
  buckhorn 
  (Flagiola 
  doTiaciformis) 
  

  

  Deer-toe 
  (Plagiola 
  clcgans) 
  

  

  Butterfly 
  (Plagiola 
  securis) 
  

  

  Missouri 
  niggerhead 
  ( 
  Obovaria 
  ellipsis) 
  

  

  Paper-shell 
  (Lampsilis 
  Ixvissima) 
  

  

  Paper-shell 
  (Lampsilis 
  gracilis) 
  

  

  Pink 
  hatchet-back 
  ( 
  Lampsilis 
  alata) 
  

  

  Pink 
  hatchet-back 
  (Lampsilis 
  parva) 
  

  

  Black 
  sand-shell 
  ( 
  Lampsilis 
  recta) 
  

  

  Slough 
  sand-shell 
  (Lampsilis 
  faUaciosa) 
  

  

  Yellow 
  sand-shell 
  (Lampsilis 
  anodontoides) 
  . 
  . 
  

  

  Higgins-ey 
  e 
  ( 
  Lampsilis 
  higginsii) 
  

  

  Higgins-eye 
  (Lampsilis 
  orbiculata) 
  

  

  Mucket 
  (Lampsilis 
  ligamentina) 
  

  

  Fat 
  mucket 
  ( 
  Lampsilis 
  luteola) 
  

  

  Pocketbook 
  (Lampsilis 
  capax) 
  

  

  Pocketbook 
  ( 
  Lampsilis 
  ventricosa) 
  

  

  X^ca 
  

  

  o 
  LS 
  

  

  QiK 
  

  

  X 
  X 
  

   X 
  X 
  

  

  XjX 
  

  

  XIX 
  

   X 
  X 
  

   X 
  

  

  X 
  X 
  

   XlX 
  

   X 
  

   X 
  

  

  X 
  X 
  

   X 
  X 
  

  

  X|X 
  

   X 
  X 
  

  

  MUSSEL 
  SPECIES. 
  

  

  There 
  have 
  been 
  recorded 
  about 
  63 
  species 
  of 
  Unionidae 
  from 
  the 
  

   lUinois 
  River 
  and 
  its 
  principal 
  tributaries.'^ 
  During 
  the 
  present 
  

   investigation, 
  however, 
  the 
  following 
  49 
  species 
  were 
  found 
  in 
  the 
  

   main 
  stream. 
  About 
  20 
  of 
  these 
  are 
  suitable 
  for 
  manufacturing 
  

   purposes, 
  although 
  only 
  6 
  or 
  7 
  occur 
  in 
  sufficient 
  quantities 
  to 
  be 
  of 
  

   practical 
  worth. 
  

  

  o 
  Baker, 
  Frank 
  Collins: 
  A 
  catalogue 
  of 
  the 
  Mollusca 
  of 
  Illinois. 
  Bulletin 
  of 
  the 
  Illinois 
  State 
  Laboratory 
  

   of 
  Natural 
  History, 
  vol. 
  vn, 
  art. 
  VI, 
  September, 
  1906. 
  

  

  