IOWA ACADEMY OF SCIENCES. 109 



24. iHijboguathiis nuchalis (Agassiz). Silvery minnow. One of the most 

 abundant of the mimiows. 



25. ■fHi/bof/nathus uitbila (B^orbes). Waverly and Austin (Minn.) Not 

 common. 



26. -\Pimephales promelas (Rafinesque). Flathead. Aljundant in sluggish 

 and stagnant water. 



27. j-Pimephales noteius (Rafinesque). Blunt-nosed minnow. Very common, 

 prefers clear, running water. 



28. -fCliola vigilax (Baird & Girard). Bullhead minnow. Palo and Cedar 

 Rapids, scarce. 



29. fNotropis anogeniis (Forbes). Austin, Minnesota. Rare. 



30. fNotropis heterodon (Cope). Not common. 



31. fNotropif: canuga (Meek). This and the two preceding species very much 

 resemble each other. They are usually found near the shore and in small bayous, 

 where there is plenty of vegetation. They are the most feeble and insignificant of 

 the fresh water fishes of Iowa. 



32. fNotropis deliciosns (Girard). Not common. 



33. -fNotrojjis fopek(i{Gri\bert). Waverly. Rare. Similar to the preceding, but 

 has much smaller eyes, and a more compressed body. 



34. fNotropis gilberti (Jordan and Meek). Inhabits clear, running water 

 Abundant. 



35. \Notropis whipplei (Girard). Common. 



36. \Notropis megalops (Rafinesque). Common Shiner. An abundant and 

 variable minnow. 



37. fNotropis jejiinus (Forbes). Cedar Rapids. Rare. 



38. fNotropis ardens (Cope). Red fin. Not common. Very variable. 



39. fNotropis dilecins (Girard). Emerald minnow. Common. 



40. fNotropis atherinoide.s (Rafinesque). Not common. Seldom taken except 

 in river currents. 



41. fPhenacobins mirabilis (Girard). Not common. 



42. fRhinichthi/s atronasus (Mitchill). Black-nosed Dace. Palo and Mt. 

 Vernon. Scarce. 



43. t Hybopsis dissimilis (Girard). Not common. 



44. f Hi/bopsis storerianus [Kirtland). Scarce. 



45. t Hgbopsis kentiickiensis (Rafinesque). Horny-head. River chub. 

 Common. 



46. f Semotiliis atroinncnlntus (Mitchill). Scarce. 



47. f Phoxinus elongntus {KxriXcxnd). Palo (Dry creek). Scarce. The ident- 

 ification of this species somewat doubtful. 



48. fNotmigonus chrysoliicus [yixichiW). Golden shiner. Bream. Not com- 

 mon. 



fHyhognathtis nuchalis placita (Girard). Scarce, Des Moines river. 

 ■FNotropis hoops (Gilbert). Southwest Iowa. Scarce. 



fNotroi)ishii<lmnius (De Witte Clinton). Spa>vn eater. Clear and Spirit lakes and 

 Sioux river. Locally abundant. 



iyotrnpin lutrensis (Baird and Girard). Very abundant in western Iowa. 



iRhinichthys cataractac (Cuv. and Val.) Loup;. Upper Iowa river. Scarce. 



fHiibopsis gelidus (Girardi. Common in the Missouri river. 



■f Hybopsis hyostomus (Gilbert). Southwest Iowa. Scarce. 



fPlatygobia gracilis (Ricliardson). Flat-headed chub. Missouri river. Scarce. 



