RErORT ON ICHTHYOLOGY. 411 



10. Le Pimelode tachete, Pimelodus macidatus Lac, Val. = Ehamdia maculata 

 Bleeker — Pimelodus macidatus Lac. 



11. Le Pimelode bleuatre, Pimehdits ccerulescens. 



This species is described as having iwo barbels above and two below, besides the 

 supramaxillary ones. It cannot be referred with certainty to any known genus. 



12. Le Pimelode doigt-de-xegee, Plmehdus nigrodif/ifafus z^Arins acutivelis 

 Val. — Melanoducti/lus acutivelis Bleeker ^ Meluiwdacti/lus niyrodifjitutus. 



13. Le Pimelode Commersonien, Pimelodus commersonii =: Pimelodus harhus Lac. 

 — Bagrus commersonii Val. zr Guiritinga Commersonii Bleeker. 



14. Le Pimelode Thunberg, Pimelodus TJinnherg = Silurus maculatus Thunberg 

 zr Silurus ocellatus Bl., Schn. — Arius ocellatus Val., Bleeker r: Arius mnrulatus. 



15. Le Pimelode maton, Pimelodus catus zz Pimelodus catus Val.partim — .^miwrMS 

 catus Gill partim. 



16. Le Pimelode cous, Pimelodus cous-=. Arius cous Heckel = New genus near 

 Glyptosternmn cous. 



17. Le Pimelode docmac, Pimelodus docmac zz Bogrus docmac Cuv., ^'al., Bleeker. 



18. Le Pimelode bajad, Pimelodus bajad zz Bagrus bajad Cuv., Val., Bleeker. 



19. Le Pimelode eevthroptere, Pimelodus erythroptervs ■:= Macrones ergthro- 

 pterus. 



20. Le Pimelode raie-d'argent, Pimelodus atherinoides zz Pscudeutropius atheri- 

 noides Bleeker. 



21. Le Pimj:lode raye, Pimelodus vittatus zz Bagrus vittatus Ya.\., Bleeker = Jia- 

 crones vittatus. 



22. Le Pimelode mouchete, Pimelodus guttatus zz Pimelodus f guttatus Bleeker = 

 Amiurus f gutata sp. incert. 



SECONDE SOUS-GENRE. 



La nageoire de la queue temiinee par une ligne droite ou arrondie et sans 

 ^chi'ancrure : 



23. Le Pimelode casque, Pimelodus galoatus zz Auchenipterus maculosus XaX. zz 

 Tracliycorystcs (?) galeatus Bleeker. 



24. Le Pimelode chili, Pimelodus chilensis zz Silurus cliilemis Linn. 



In the year 1817, Cuvier published the first edition of his " Regno animal", and 

 revised the class of Fishes. He formed a family for the Siluri and allied fishes, to 

 which he gave the name of Siluroides. In this family, he admitted four great genera, 

 Silurus Lhm., Malupterurus Lac, Aspredo Linn., and Loricaria Linn. The Siluri were 

 divided into five sections, the second of which was called that of the Machoirans or 

 Mystus. The latter name was erroneously quoted as of Artedi and Linna?us in his 

 first editions (Arted. et Lin. dans ses premieres editions) ; erroneously, for the name of 

 Mystus does not occur as the designation of a genus in the special works of either of 

 those naturalists.* It was tu-st applied to a genus of Siku'oids by Gronovius in the 



* It is applied to species of the genus Pimelodus of Lac^pfede by Artedi in the great work of Seba (Locnple- 

 tissimi Rernin uatnralium Thesauri Acciirata Dcscriptio et Iconibus artificiosis sinius expressio per uuiversam Physices 

 historian!) ; but tlie third fasciculus, in which the lishcs are described, was not published until long after the death of 

 Artedi; and luach has apparently been interpolated in that work of which that great ichthyologist was not the author. 



