REPORT UPON THE PISHES OE IOWA. 
233 
20. Campostoma anomalum (Rafinesque). Stone-lugger; Stone-roller. West Liberty and Prairie 
creeks, rare. Indian Creek, not common; head, 4} in the length of the body; dorsal rays, 7 
or 8 ; anal rays, 7 or 8 ; snout, 3 in length of the head ; first dorsal ray midway between base 
of caudal and tip of snout. Palo (Dry Creek), Waverly (Cedar and Shellrock rivers), Dumont, 
common ; scales, 47 to 53. Austin, not common. 
21. Chrosomus erythrogaster Rafinesque. Bed-bellied minnow. This species is seldom found in 
Iowa except in spring brooks, and is nowhere abundant. It was common in a small brook 
at Mount Yernon, and rare at the following localities: Palo, Dry Creek, Waverly, taken in 
a small spring brook, tributary to the Cedar River ; Austin. 
22. Hybognathus nuchalis Agassiz. Silvery minnow . Prairie Creek, common; Indian Creek, Dumont 
and Waverly (Shellrock River), rare. 
23. Hybognathus nubila (Forbes). Waverly (Shellrock River) and Austin, not common. 
24. Pimephales promelas Rafinesque. Flat-bead. Cedar rapids, very abundant. Nearly all the 
specimens were taken in a ditch along the Illinois Central Railroad near Cedar Rapids, 
where no fishes had been found the previous summer. No other species, moreover, were 
observed in this ditch, which is in communication with the Slough in times of high water. 
Only two species of Pimephales occur in Iowa. P. promelas prefers sluggish or stagnant 
pools with a muddy bottom, while notatus always inhabits clear water. This species was also 
obtained at the following localities: Indian Creek, common; Palo, Dry Creek, not common. 
West Liberty, Prairie Creek, Waverly (Shellrock River), Dumont, and Austin, rare. 
25. Pimephales notatus (Rafinesque). Blunt-nosed minnoio. Indian Creek, abundant; West Lib- 
erty, Cedar Rapids, Prairie Creek, Palo, Dry Creek, Waverly (Cedar River and Shellrock 
River), Dumont, and Austin, common; Palo, Cedar River, rare. 
26. Cliola vigilax (Baird and Girard). Bullhead minnow. Palo and Cedar Rapids, common. 
27. Notropis anogenus Porbes. Austin, Minnesota, rare. This species very much resembles N. 
heterodon, from which it differs in having a smaller and more oblique mouth. 
28. Notropis heterodon (Cope). West Liberty; dorsal nearer tip of snout than base of caudal ; dark 
lateral band prominent. Found near the shore where there is little current and an abun- 
dance of weeds. Cedar Rapids, not common ; Dumont, rare; Waverly (Shellrock River). 
29. Notropis cayuga Meek. Indian Creek, rare. Head, 4 in the length of the body ; depth, 4|- ; dorsal 
(origin of first ray) slightly nearer tip of snout than base of caudal fin; 14 or 15 scales in a 
series before dorsal fin ; lateral line complete ; scales, 35 or 36 ; anal rays, usually 8, seldom 9 ; 
suout blunt; mouth small. Color, dark above ; outline of scales on upper part of body very 
distinct; dark lateral band present, passing around snout on upper jaw only. Waverly 
(Shellrock River), Austin (Minnesota), Dumont, Prairie Creek, and West Liberty, rare. This 
species is usually found with Notropis heterodon Cope, and Notropis anogenus Forbes, and is 
nowhere abundant. These three species are among the most feeble and insignificant of our 
fresh-water fishes. 
30. Notropis deliciosus (Girard). Indian Creek, Cedar Rapids, and Dumont, common; Waverly 
(Shellrock and Cedar rivers), not common; West Liberty, Prairie Creek, and Palo, rare. 
31. Notropis topeka Gilbert. Waverly (Cedar River) and Shellrock (Waverly), rare. This species 
resembles Notropis deliciosus, but has smaller eyes and a more compressed body. 
32. Notropis gilberti Jordan and Meek. Palo, abundant; Shellrock River, at Waverly, very common ; 
Waverly (Cedar River) and Dumont, common; Cedar Rapids, not common; Prairie Creek, 
rare; West Liberty. This species is one of the most abundant in Iowa, and is found in clear, 
running water. 
33. Notropis whipplei (Girard). West Liberty and Prairie Creek, abundant; Cedar Rapids, com- 
mon ; head, 4 ; depth, 4 to 44 ; scales, 36 to 38. Waverly, Cedar River, and Dumont, common; 
Waverly (Shellrock River), rare ; lateral line, 35. 
34. Notropis megalops (Rafinesque). Common shiner. West Liberty, Shellrock River at Waverly, 
Palo, and Dumont, abundant; Waverly (Cedar River), Indian Creek, Prairie Creek, and 
Cedar Rapids, common. This species is variable. The scales before the dorsal fin are 
usually small. In most of the specimens from Missouri and Arkansas the scales before the 
dorsal are large. 
