85 
Genus 66. Lxrpipostrus, Lacépéde. 
126. Lepidosteus platystomus, Raf.—SuHort-Nosep Gar. 
One of the most abundant of the larger Illinois fishes, rarely oc- 
surring, however, in the smaller streams, and confined chiefly to 
she larger rivers and the lakes and ponds connected with their 
waters. It is also taken in Lake Michigan. 
127. Lepidosteus osseus, L.—Lona-NosED Gar; Binu-FisH; Common 
Gar PIKe. 
Generally abundant in the larger streams throughout the State, 
ind taken by us in the Illinois, Mississippi and Ohio. Occurs also 
n the smaller lakes in Northern Illinois. 7 
Sub-class CHONDROSTEI. 
Order X. GLANIOSTOMI. 
(THE STURGEONS.) 
Family XXV. ACIPENSERIDA. 
Genus 67. ScapHirdyNcHoes, Gill. 
128. Scaphirhynchops platyrhynchus, Raf.—SHovEL-NOsSED STURGEON ; 
WHITE STURGEON. 
Taken by us somewhat rarely in the Ohio and Mississippi Rivers 
vt Cairo, and in the Illinois at Peoria. 
Genus 68. Acipenser, L. 
29. Acipenser rubicundus, Le Sueur.—Lake Strurceon; Ouro Stur- 
GEON; Buack STURGEON; STONE SturGEON; Rock StrurGEonN. 
(Bul. II, 69; Acipenser maculosus, Acipenser rubicundus.) 
Ohio, Mississippi and Illinois Rivers and Lake Michigan. 
Reaches, in the last, a weight of a hundred and fifty pounds, or 
more. The characters vary greatly with age and size. 
Order XI. SKLACHOSTOMI. 
Family.XXVI. POLYODONTIDA. 
Genus 63. Potyopon, Lacépéde. 
80. Polyodon spathula, Wall.—SHo7vEL-FisH; PappLE-FIsH; SPoon- 
BILL Cat; Duck-BiLL Cat. 
(Bul. II, 69; Polyodon foliwm.) 
Abundant in the Mississippi and Illinois Rivers, and especially in 
he ponds and lakes in the bottoms of these streams. Rarely, if 
tver, ascending smalier streams, and not collected by us in any of 
he interior lakes. Not known from Lake Michigan. Hausman 
es 
i 
