199 

 Genus Ageneiosus Lacepdde 



Generic Synonymy 



Ageneiosus Lacepdde 1803 (type species: Silurus armatus Lacepdde, by subsequent 

 designation of Eigenmann and Eigenmann 1890). 



Ceratorhynchi Agassiz 1829 (type species: C. militaris Agassiz in Spix and Agassiz 

 1829 [= A. armatus Lacepdde], by monotypy; genus name emended to 

 Ceratorhynchus by most authors). 



Hypothalmus Schomburgk 1841 (type species: Hypothalmus dawalla Schomburgk [ = 

 A. brevifilis Valenciennes], by monotypy). 



Davalla Bleeker 1858 (type species: Hypophthalmus davalla Schomburgk [error in 

 speHing of Hypothalmus dawalla], hy monotypy). 



Pseudageneiosus Bleeker 1862 (type species: Ageneiosus brevifilis Valenciennes in 

 Cuvier and Valenciennes 1840, by original designation). 



Ageniosus Giinther 1864 (incorrect subsequent spelling). 



Tympanopleura Eigenmann 1912 (type species: T.piperata Eigenmann, by original 

 designation). 



Ageneisus Steindachner 1915 (incorrect subsequent spelling). 



Diagnosis 



As given in the family diagnosis, exclusive of the character states that are . 

 unique to Tetranematichthys. 



Description 



Small-to-medium sized, sexually dimorphic, semipelagic catfishes with the 

 following unique combination of characters. 



