410 EXPLOKATIONS ACROSS THE GREAT BASIN OF UTAH. 



The color is reddish-gray or blue on the dorsal region, and on the abdomen is 

 whitish or whitish-yellow. The fins are uniform and colorless. 



Numerous specimens of this fish were obtained by Mr. McCarthy, the collector of 

 Captain Simpson's expedition, at Green River, Utah, and in the Platte Valley. 



Family SILUROID^, (Cuv.) Bleekek. 



Subfamily PIMELODINiE, (Bok). 



Of this subfamily, there are found representatives of four genera and numerous 

 species in the fresh waters of the United States. These have hitherto, with the ex- 

 ception of the Noturi, been referred to one genus, and for that genus the name of 



Now that the Vimdodi of Lacepede have been distributed among numerous smaller 

 groups or genera, it remains to ascertain to what group the name Pimehdus ought 

 to he restricted, and what names should be applied to the three genera now distin- 

 guished among the American I'i)ue/od'ni«\ exclusive of the Noturi of Rafinesque. 



Lacepede characterized his genus Pimehdus simply by the presence of an adipose 

 tin, and included under the name the following species : 



PREMIER SOUS-GENRE. 



La nageoire de la queue fourchue on ebranche'e en croissant : 



1. Le Pimelode bagre, Pimehdus bagrus - Bagrus sp. Cuv. - GaleicWiys Gro- 

 novii Y&l = JElurichthys bagrus B. & G. 



2. Le Pimelode chat, Pimehdus felis = Silurus fells Linn, partim. — Amiurus 

 sp.* 



3. Le Pimelode scheilan, Pimehdus clarias Lac. -Synodontis clarias Cuv. = Sy- 

 nodontis arabi Val. - Synodontis sehd Bleeker. 



4 Le Pimelode barre, Pimehdus fasciatus — Ptaty stoma fasciatnm Ag. — Soru- 

 bium fasciatnm Gill. 



5. Le Pimelode ascite, Pino Indus ascita — Embryonic young. 



6. Le Pimelode argente, Pimehdus argenteus.— Bagrus Herzbergie Val. — Ne- 

 tuma Herztieryie Bleeker. 



7. Le Pimelode ncetjd, Pimehdus nodosus — Alius nodosus Ya\. = Auchenipterus 

 furcatus Val. = Auchenipterus nodosus Mull. & Trosch., Bleeker. 



8. Le Pimelode quatre-taches, Pimehdus quadrimaculatus = Hemipimehdus 

 quadrimacidatus Bleeker. 



9. Le Pimelode barbtj, Pimehdus barbus — Bagrus CommersoniiYal = Guiritinga 

 Gommersonii Bleeker. 



- The Pimelode chat (Pimehdus felis) of Lacepede id chiefly founded on the Silurus felis of Linnams, and the enu- 

 meration of the rays of the dorsal and anal fins is taken from the Systema Nature, but the mention of the color and 

 partly of the habitat appears to be on the authority of Daubentou and Hauy and of Bonnaterre 



The ' S,/ '" "* > ' ' ' ■» des « "»* on the authority of Dr. Garden as having six barbels and twenty three 



anal rays, and as , „,„„, , an „ nlv w , m AmiHn ^ whoM nMal barbe]s haye been over , ooked> 



l h ' u ~> ot ' [ " ' '" '" '"l"' ^ '•' - rib « d « being from Cayenne, where it is called Mathoiran Man, . 



and whose color is white, is unrecognizable. 



