1*78 PROCEEDINGS OF THE ACADEMY OP [1884. 



analogous to those of the Mullids and to be destitute of ventrals. 

 Their homology was not even recognized by those who studied 

 their anatomy. Prof. Agassiz, for instance, in his Recherches sur 

 les Poissons fossiles, representing them as apodal. 



There are three or four genera, Ophidium, Genypterus, and 

 Leptophidium. 



Leptophidium^ although recognized as a mere subgenus by 

 Messrs. Jordan & Gilbert, is very distinct. 



FIERASFERID^E. 



Family Synonyms. 



<^ Oinnotini, Rafincsque, Indice, d'lttiolog. Siciliani, p. 37, 1810. 

 = FierasferidoE, Gill, Proc. Acad. Nat. Sc. Phila., 1864, p. 203, 1864. 

 ^ Fierasferidm, Gill, Arrangement Fam. of Fishes, p. 3, 1873. 



> Fierasferi, Fitzinger, Sitzungsber. K. Akad. der Wissensch., v. 67, 



1. Abth., p. 43, 1873. 



> Fnchelyophes, Fitzinger, Sitzimgsber. K. Akad. der Wissenscli., v. 67, 



1. Abth., p. 4:!, 1873. 

 = Flerasferidoe, Putnam, Proc. Boston Soc. Nat. Hist., v. 16, p. 339, 1874. 

 = Merasferidos, Jordan & Gilbert, Syn. Fishes N. Am., pp. 400, 791, 1883, 



Ophidiidw, gen., Bon. 



OpMdioidei ophidiiformes, gen., Blkr. 



Ophidiidm, s.-fam., Giintber. 



Subfamily Synonyms. 

 = Fierasferina, Giintber, Cat. Fishes in Brit. Mus., v.- 4, pp. 370, 381, 



1863. 

 = Fierasferini, Emery, Atti R. Accad. dei Lincei (3), v. 7, p. 168, 1873. 



Ophidioidea without ventrals, and with the anus thoracic or 

 jugular. 



CONGROGADID^. 



Family Synonyms. 



= CongrogadidoB, Gill, Arrangement Families of Fishes, p. 3, 1872. 



< CongrogadidiP, .Jordan & Gilbert, Syn. Fishes of N. Am., p. 790, 1883 



Subfamily Synonyms. 



< Gongrogadime, Giintber, Cat. Fishes in Brit. Mus., v. 4, pp. 370, 388, 



1862. 



< Congrogadini, Emery, Atti R. Accad. dei Lincei (3), v. 7, p. 168, 1873. 



Ophidioidea without ventrals, the anus in the anterior half of 

 the length, and branchial membranes imited beneath but free 

 from the throat. 



