200 Mr. C. T. rjegan— ^ Synopsis of the 



5. Caspiomyzon. 



Caspiomyzon, Berg, Bull, Acad. Imp. St. Petersb. (5) xxiv. 1906, 



p. 177. 

 Aynathomyzon, Gratzianow, Dneve. zool. otd. obsc. liub. jest. Moskva, 



iii. 1907, p. 18. 



Disc covered with radially arranged teeth. A single 

 narrow unicuspid supraoral lamina; intraoral lamina cuspi- 

 date. Anterior lingual lamina with a single transverse 

 denticulated ridge. Dorsal fins separate. 



Caspian Sea and rivers flowing into it. 



1. Caspiomyzo7i wagneri. 



Petromyzon wayneri, Kessler, Trud. St, Petersb. Obshch. Estestv. i. 



1870, pp. 207, 302, pi. iii. figs. 4, 5. 

 Caspiomyzon tcayneri, Berg, Bull. Acad. Imp. St. Petersburg, (5) xxiv. 



1906, p. 178. _ 



Aynathomyzon wagneri, Gratzianow, Dneve. zool. otd. obsc. liub. jest. 



Moskva, iii. 1907, p. 18. 



Caspian Sea and the rivers falling into it. 



1-3. 300-330 mm. Astrachan. St. Petersburg Mus. 



4. 340 mm. „ „ 



A second species, C. caspicvs, lias been described [Agyia- 

 thomyzon caspicus, Gratzianow, Dneve. zool. otd. obsc. liub. 

 jest. Mopliva, iii. 1^07, p. 18; Caspicmyzon caspicus, Grat- 

 zianow, Trd. otd. icht. obsc. Moskva, vi. 1907, p. 18) ; it is 

 said to differ from C. wagneri only in the dentition of the 

 tongue and is probably a synonym. 



6. EuDONTOMYZON, gen. nov. 



Disc covered with radially arranged teetii. A single broad 

 bicuspid supraoral lamina ; intraoral lamina cuspidate. 

 Anterior lingual lamina with a single transverse denticulated 

 ridge. Dorsal fins separate. 



Transylvania. 



1. Eudontomyzon danfordi, sp. n. 



Labial teeth numerous, small, pointed ; on each side 

 3 enlarged teeth, the first and third uni- or bicuspid, the 

 middle one bi- or tricuspid. Intraoral lamina with 9 to 11 

 cusps. Anterior lingual lamina usually with an enlarged 

 median cusp. 



Transylvania. 



