■O ART. I. JORDAN, TANAKA AND SNYDER : 



5. Paramyxine atami Dean. 



Kuro-mekuraunagi. 



Paramyxine atami Dean, Jour. Coll. Sei. Tokyo, XIX, Jan, 28, 1904, pp. 14, 



22. Off Atami, Idzu. 

 X)istrib. — Sagami Sea. 



Order HYPEROARTII. 

 Family PETKO.^YZONID.E. 



Genus Entosphenus Gill. 



JintospIictuLs Gill, Proc. Ac. Nat. Sei. Phila., 1862, p. 231. 

 Type Petroinyzon tridtntatiis Richardaon. 



6. Entosphenus japonicus (Martens). 



Kawayatsume ; Yatsume ; Yatsumeunagi ; Nanatsume (Prov. Inaba;. 



Fetromyzon japonicus Martens, Archiv. Naturg., XXXIV, 1868, p. 3. Japan. 

 Distrib. — Northern Asia ; Northern Japan. 



Genus Lampelra Gray. 



Lanipctra Gray, Proc. Zool. Soc. London, 1851, p. 235, 

 Type Petroinyzon fliLviatilis Linnseus. 



7. Lampetra planeri (Bloch). 



Sunayatsume (Gifu ; Prov. Shinano) ; Tsuchikujiri (Prov, Kaga) ; Sunahojiri (Nanao, 

 Noto) ; Kageyatsume (River Aka, Echigo) ; Gina, Ginarai, Giname, Ginayatsume, ^' 

 cr Suigina (Prov. Shinano) ; Meku (River Tama, Musashi) ; Mekuraunagi (Saga, Hizen). 



Petroinyzon branchialis Linnaeus, Syst. Nat., loth ed., 1758, p. 230. Sweden. 



Larva. 

 Petroinyzon planeri Bloch, P'isch. Deutschl., Ill, 1782, p. 47, taf. 78, fig. 3. 



Germany. 

 Lampetra mitsnkurii Hatta, Annot. Zool. Japan., IV, No. i, Aug. 23, 1901, 



p. 24. Hokkaido ; Hondo. 

 Distrib. — North America, Europe, Asia and almost all parts of Japan. 



