63 



Petromyzon nigricans Lesueur. 



Petromyzon nigricans Storer. Synopsis Fishes N. A., p. 265. 



Genus Ichthyomyzon Girard. 



Ichthvomyzon appendix Girard. 



Petromyzon appendix Storer. Synopsis Fishes N. A., 266. 



Order HYPEROTRETI (Bon.) 



Family MYXINOIDiE (Muller.) 

 Subfamily MYXININJE (Bon.) 



Genus Myxine Linn. 



Myxine glutinosa Linn. 



Myxine glutinosa Fabricius. Fauna Grcenlandica, p. 344, No. 334. 

 Myxine limosa Girard.* 



Myxine limosa Girard. Proceedings of the Academy of Natural 

 Sciences of Phila., 1858, p. 



Order PHARYNG OBRANCHII f Muller.) 

 Family BRANCHIOSTOMOIM3 (Bon.) 



Subfamily BRANCHIOSTOMIN^E (Bon.) 



Genus BRANcgiosTOMA Costa. 

 Branchiostoma sp. 





