23. Hybopsis plumbea (Agassiz), lake chub, 

 p. 25 



24. Hybopsis biguttata (Kirtland), horny- 

 head chub, p. 26 



25. Rhinichthys atratulus (Hermann), black- 

 nose dace, p. 27 



26. Rhinichthys cataractae (Valenciennes), 

 longnose dace, p. 28 



27. Chrosomus neogaeus (Cope), finescale 

 dace, p. 29 



28. Chrosomus eos Cope, northern red- 

 belly dace, p. 30 



29. Notemigonus crysoleucas (Mitchill), 

 golden shiner, p. 31 



30. Notropis atherinoides Rafinesque, 

 emerald shiner, p. 32 



31. Notropis rubellus (Agassiz), rosyface 

 shiner, p. 32 



32. Notropis cornutus (Mitchill), common 

 shiner, p. 33 



33. Notropis hudsonius (Clinton), spottail 

 shiner, p. 34 



34. Notropis heterodon (Cope), blackchin 

 shiner, p. 35 



35. Notropis dorsalis (Agassiz), bigmouth 

 shiner, p. 35 



36. Notropis stramineus (Cope), sand 

 shiner, p. 36 



37. Notropis volucellus (Cope), mimic 

 shiner, p. 35 



38. Notropis heterolepis Eigenmann and 

 Eigenmann, blacknose shiner, p. 37 



39. Hybognathus hankinsoni Hubbs, brassy 

 minnow, p. 38 



40. Pimephales promelas Rafinesque, fat- 

 head minnow, p. 39 



41 . Pimephales notatus (Rafinesque), blunt- 

 nose minnow, p. 40 



Catostomidae: 



42. Catostomus commersoni (La c epede), 

 white sucker, p. 41 



43. Catostomus catostomus (Forster), long- 

 nose sucker, p. 42 



44. MoxQstoma anisurum (Rafinesque), 

 silver redhorse, p. 43 



45. Moxostoma macrolepidotum (Lesueur), 

 northern redhorse, p. 43 



Ictaluridae: 



46. Ictalurus punctatus (Rafinesque). 

 channel catfish, p. 44 



47. Ictalurus melas (Rafinesque), black 

 bullhead, p. 45 



48. Ictalurus nebulosus (Lesueur), brown 

 bullhead, p. 4(, 



49. Ictalurus na talis (Lesueur), yellow bull- 

 head, p. 44 



50. Noturus flavus Rafinesque, stonecat, 

 p. 44 



51. Noturus gyrinus (Mitchill), tadpole mad- 

 tom, p. 44 



Anguillidae: 



52. Anguilla rostrata (Lesueur), American 

 eel, p. 47 



Cyprinodontidae: 



53. Fundulus diaphanus (Lesueur), banded 

 killifish, p. 47 



Gadidae: 



54. Lota lota (Linnaeus), burbot, p. 47 

 Gasterosteidae: 



55. Eucalia inconstans (Kirtland), brook 

 stickleback, p. 48 



56. Pungitius pungitius (Linnaeus), 

 ninespine stickleback, p. 49 



Percopsidae: 



57. Percopsis omiscomaycus (Walbaum), 

 trout-perch, p. 50 



Centrarchidae: 



58. Micropterus dolomieui Lacepede, 

 smallmouth bass, p. 5 1 



59. Micropterus salmoides (Lacepede), 

 largemouth bass, p. 51 



60. Lepomis gibbosus (Linnaeus), pumpkin- 

 seed, p. 52 



61. Lepomis macrochirus Rafinesque, blue- 

 gill. p. 52 



fc2. Ambloplites rupestris (Rafinesque), 

 rock bass, p. 53 



63. P o m o X i s nigromaculatus (Lesueur), 

 black crappie, p. 53 



Percidae: 



64. Perca flavescens (Mitchill), yellow 

 perch, p. 54 



65. Stizostedion vitreum vitreum (Mitchill), 

 walleye, p. 55 



66. Percina macula ta (Girard), blackside 

 darter, p. 55 



67. Percina caprodes (Rafinesque), log- 

 perch, p. 56 



68. Etheostoma nigrum Rafinesque, Johnny 

 darter, p. 57 



69. Etheostoma exile (Girard). Iowa darter, 

 p. 58 



Cottidae: 



70. Cottus bairdi Girard, mottled sculpin, 

 p. 59 



71. Cottus cognatus Richardson, slimy 

 sculpin, p. 60 



METHODS OF COLLECTION 



Fish collections were made incidentally to 

 four phases of the experimental sea lamprey 

 control program: the operation of electric 

 barriers; distribution surveys for sea lamprey 

 ammocetes; fishing of fyke nets for larval and 

 transforming sea lampreys; and, the applica- 

 tion of selective sea lamprey larvicides. 



ELECTRIC BARRIERS 



Electric barriers with traps have been op- 

 erated on 60 streams of Lake Superior to 

 block the spawning migration of sea lampreys. 

 The system of barriers extended from the 

 Waiska River, near Sault Ste, Marie, Mich., 



