212 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Order C. HYPEROARTII. The Lampreys. 

 Family IV. PETROMYZONID,a;. The Lampreys. 



Genus 5. BATHYMYZON Gill. 



Bathymiizon Gill, Proc. U. S. Nat. Mus. 1883, 254 (bairdii). 



7. Bathymyzon bairdii Gill. 



Gulf .Stream. 



rctromjizon {Baihijmiizon) hairdii (i\\\, Proc. U. S. Nat. Mu8. 1883, 254, Gulf 

 Stream at hit. 49^ N., iu 547 fathoms. 



Genus 6. PETROMYZON (Artedi) Linnaeus. 



Peiromyzon (Artedi) Liuna-us, .Systema Xatura', ed. x, 230, 1758 {marinnn). 



8. Petromyzou mariniis Linua-ns. Great Sea Lamprey; Lamprey Eel. 



Atlantic coasts of Europe aud North America, southward to Chesapeake Bay- 

 Peiromyzon marinus Liuuanis, Syst. Nat., ed. X, 230, 1758, European seas; 

 after Artedi. 



8a. Petromyzou marinus unicolor (DeKay). 

 Lakes of northern and central New York. 

 Ammocutes iiuicolor DeKay, N. Y. Fauna: Fishes, 383, 1842, Lake Champlain. 



Genus 7. ICHTHYOMYZON Girard. Fiver Lampreys. 



Ichihyomy:on Girard, Pac. R. R. Surv., X, 381, 18.58 (argenfeus). 



9. Ichthyomyzon concolor (Kirtland). Silvery Lamprey. 



Great Lakes, Upper Mississippi Valley, and Rainy River. 



Ammocutes concolor Kirtland, Post. Jour. Nat. Hist., iii, 1840, 473, with plate, 

 Mahoning and Scioto rivers, Ohio. 



10. Ichthyomyzon castaneus Girard. 



Mississippi Valley. 



Ichthyomyzon castaneus Girard, Pac. R. R. Surv., x, 381, 1858, Galena, Minn. 



Genus 8. ENTOSPHENUS Gill. 



Entosphenus (iill. Proc. Ac. Nat. Sci. Phila. 1862, 331 (tridcntatiis). 



11. Entosphenus tridentatus (Gairdner). 



Pacific Coast of America, T^nalaska to southern California. 



Peiromyzon tridentatus (iairdner, in Richardson, Fauna Bor.-Aui., 293, 1836, 

 Fails of the Walamet (now Willamette) River, Oregon. 



Genus 9. LAMPETRA Gray. Brook Lampreys. 



Lamjn'tra Gray, Proc. Zool. Soc. Lond. 1851, 235 {Jluvialis). 



12. Lampetra aurea(Bean). 



Yukon River and streams of Alaska and Kamchatka. 



Ammocoetes aureus Beau, Proc. U. S. Nat. Mus. 1881, 159, Yukon River 



13. Lampetra spadicea Bean. 



Guanajuato, Mexico. 



Lampetra spadicea Beau, Proc. U. S. Nat. Mus. 1887, 374, Guanajuato. 



14. Lampetra cibaria (Girard). 



Pacific slope of America, from Eraser River to the Sacramento. 

 Ammoccetes cibarim Girard, Pac. R. R. Surv., x, 383, 1858, Puget Sound. 



15. Lampetra wilderi (Gage). Small Black Lamprey ; Pride: Prick. 



Western New York to Iowa, iu tributaries of the Great Lakes and the Missis- 



8ip])i. 

 Ammocates wilderi Gage, iu Wilder Quarter-Century Book, 436, 1893, Cayuga 



Lake, New York. 



