— ay 
66 
Genus 11. Corrocaster, Putnam. 
. 21. Cottogaster shumardi, Grd. 
(Bul. II, 89; Imostoma shumardi: Synop., 498; do.) 
Somewhat rare in Illino’s, and occurring chiefly in large streams, 
It has, in fact, been taken by us only from the Rock, Illinois and) 
Wabash Rivers. 
f 
Genus 12. D:zpresium, Raf. 
22. Diplesium blennioides, Raf.—GRreEN-sIDED DaRTER. 
Found by us only in the Wabash Valley, where it is not rare. | 
Collected from the Little Wabash, at Flora. 
Genus 18. Botzosoma, De Kay. 
TESSELLATED DARTERS. 
23. Boleosoma camurum, Forbes. 
(Synop., 493; Vaillantia camurum.) 
This little species is wide-spread, but somewhat rare, occurring 
throughout the State in creeks and ponds, but much more abun- 
dantly to the southward. 
| 
24. Boleosoma nigrum, Raf.—Jounny Darter. 
(Bul. II, 40; Boleosoma olmstedi, Boleosoma maculatum.) . 
_ By far the wost abundant and widely distributed of the darters, 
occurring in almost all waters, though of course far more abund- 
antly in creeks, and preferring rocky shallows. I do not know that} 
it is ever found in foul or muddy situations. It ranges throughout 
the State from the Galena and Calumet rivers on the north, south-| 
ward to Union county. | 
| 
Genus 14. Ammocrypra, Jordan. 
25. Ammocrypta asprella, Jordan. 
(Bul. Il, 88; Pleurolepis asprellus.) ‘ 
The only specimens of this species in our collections are the 
original types, taken in a small bluff stream in Hancock county. It) 
is reported by Dr. Jordan, however, to range from Illinois to Ala- 
bama. The creek in which the type occurred is a muddy stream, 
with occasional reaches of gravelly bottom. 
26. Ammocrypta pellucida, Baird.—Sanp Darter. 
(Bul. II, 88; Pleurolepis pellucidus.) 
The range of this little darter is limited strictly by the character 
of the streams which it prefers, as it seems to occur only in some- | 
what swiftly running waters with sandy bottom. We have taken it | 
in the Little Wabash and the Embarras, and some other creeks of 
the Wabash Valley, but not elsewhere in the State. | 
