432 
ECOLOGICAL TABLE—concluded 
ALL ILLINOIS SPECIES WITH AT LEAST TEN AVAILABLE RECORDS EACH 
| Jordan and Evermann Nos. 
Water (97 species) |Current (49 species) Bottom (62 species) 
(2) oI) fo) o so [e) 
‘5 SS Osea ase fives ‘5 
A ‘ 3) O 5) s op 3) 
Species 2 “n Aes Vl ae gla s as! 
= n WH n Lol io} yn = (| 
© | se) e alee eS g “| § 
Een a one ee aa es 2 ale 
Per elt ee vel Uillael ies tem | 6 aie 
= 9 < “a a | » ba |: fa = ss = 
‘S| lee | 8 | Sol ae] Sa) BO ee ca ee 
| 4 S & 2 3 > So) 2S a > | 3) iene 
eo} ea ee ea, a) Ne ce 
Boleichthys fustformts..| 56 LW abe) BA | Ow al SS |) Od 
east darter) = ote. 0 clk? [Seek ke! 49S lee. cle ete eels poll es 
| 
White bass. sc. 225-50 | 28 fo 5 3f BU AG We oo bes StL ala teen eee 
Yellow bass.......... TOO S20 44h 4a cena som i 
| | | 
Sheepshead. ......... | SP BO) we dol) 2a mile 
° GENERAL SUMMARY 
The principal conclusions of this article may be thus sum- 
marized: 
1. The 150 native species of Illinois fishes here recognized, are so 
distributed within and without the state as to indicate an unequal 
commingling of the faune of the surrounding territories, southeast- 
ern species preponderating over southwestern, northeastern over 
northwestern, ‘eastern over western, and southern over northern. 
2. The Illinois basin may be taken as typical, in its fish popula- 
tion, of the ichthyology of the whole state—occupying, as it does, a 
central position, including more than half the area of the state, and 
containing a great variety of waters and situations fit for the habita- 
tion of fishes, and more than four fifths of the species found anywhere 
in Illinois. The more important fishes of the state not known from 
this basin are a few distinctively northern species, most of which are 
peculiar to the Great Lakes, and a few southern species which do not 
range as far north, in this state. as the mouth of the Illinois. The 
