CHECK LIST OF FISHES 9 



11. Petromyzon marinus dorsatus Wilder. Lake lamprey; Mud lamprey. 



Landlocked in Cayuga Lake and other lakes of western and central New 



York. 

 Petromyzon marinus dorsatus Wilder, in Jordan and Gilbert, Synop. Fishes 



North Amer., 1883, 869, Cayuga Lake, N. Y. 



Genus 6. ICHTHYOMYZON Girard. River lampreys. 



Ichthyomyzon Girard, Pac. R. R. Surv., X, 1858, 381 {Petromyzon argenteus 



Kirtland) . 

 Scolecosoma Girard, loc. cit., 385 (Ammocoetes concolor Kirtland); larva of 

 argenteus. 



12. Ichthyomyzon concolor ( irtland). Silver lamprey. 



Great Lakes; upper Mississippi Valle)'; tributaries of Hudson Bay; south 



to Arkansas and Louisiana. 

 Petromyzon argenteus Kirtland, Zool. Ohio, 170, 1838, 197, Big Miami 



River, Ohio; name preoccupied. 

 Ammocoetes concolor Kirtland, Jour. Bost. Soc. Nat. Hist., Ill, 1840, 473, 



plate, Mahoning River; Scioto River; larva. 

 Petromyzon bdellium Jordan, Cat. Fishes North Amer., 1885, 4; after 



Kirtland. 

 Ichthyomyzon castaneus Girard, Pac. R. R. Surv., X, 1858, 381, Galena, 



Minn. 

 Ichthyomyzon hirudo Girard, loc. cit., 382, Fort Smith, Ark. 



Genus 7. REIGHARDINA Greaser and Hubbs. 



Reighardina Creaser and Hubbs, Occ. Papers Mus. Zool. LTniv. Mich., 

 No. 120, 1922, 4 (Ichthyomyzon Jossor Reighard and Cummins = i4?nmo- 

 cosles unicolor DeKay). 



13. Reighardina unicolor (DeKay). 



Ammocoetes unicolor DeKay, N. Y. Fauna: Fishes, 1842, 383, pi. 79, fig. 



250; Lake Champlain. 

 Ammocoetes horealis Agassiz, Lake Superior, 1850, 252, Michigan River, 



Mich. 

 Ichthyomyzon fossor Reighard and Cummins, Occ. Papers Mus. Zool. 



Univ. Mich., 31, 1916, 1 to 12, pi. 1, 2, Michigan. 



Genus 8. lETHENTERON Creaser and Hubbs. 



Lethenteron Creaser and Hubbs, (Jcc. Papers Mus. Zool. Univ. Mich., 

 No. 120, 1922, 6 (Lampetra wilderi Gugc— Petromyzon appendix DeKay). 



14. Lethenteron appendix (DeKay). Small black lamprey; Brook lamprey. 



"Sew York to Iowa, in tributaries of the Great Lakes and of the Ohio 



and Mississippi, south to Virginia. 

 Petromyzon nigrum Rafinesque, Ichth. Ohiensis, 1820, 84, falls of Ohio 



River; name preoccupied. 

 Petromyzon appendix DeKay, N. Y. Fauna: Fishes, 1842, 381, pi. 64, 



fig. 211, Providence; Hudson Bay. 

 Lampetra wilderi Gage, in Jordan and Evermann, Fishes North and Mid. 



Amer., 1896, 13, Cayuga Lake, X. Y. 



Genus 9. TETRAPLEURODON Creaser and Hubbs. 



Tetrapleurodon Creaser and Hubbs, Occ. Papers Mus. Zool. Univ. Mich., 

 No. 120, 1922, 9 (Lampetra spadicea Bean). 



15. Tetrapleurodon spadiceus (Bean). Mexican lamprey. 



Known only from the Kio Lerma, near Guanajuato, and from Lago de 



Chapala, Mexico. 

 Lampetra spadicea Bean, Proc. U. S. Nat. Mus., X, 1887, 374, PI. XX, 



fig. 6, Rio Lerma, Guanajuato, Mexico. 



Genus 10. ENTOSPHENUS Gill. 



Entosphenus Gill, Proc. Acad. Nat. Sci. Phila., XIV, 1862, 331 (Petromyzon 

 tridentatus Gairdner). 



