Jordan ami Ever maun. Fishes of North America. TJ7 



AV/M//M ditbia, BLEEKER, Versl. Mod. Ac. Wet. Auisterd., xiv, 382, 1862, Surinam. 

 Anns lining Gi'NTHEB, Cat., v, 144, 1804. 



H.$ ditbiuc, EIGENMANN, S. A. Nematognathi, 69, 1890. 



180. NETUMA KESSLERI, (Stoindachner). 



Head large, 3; caudal not f head; fontanelle obtuse behind. A. 17. 

 Shields of head coarsely granular ; barbels short, reaching base of pec- 

 torals. Altata to Panama ; not rare. (Named for Dr. K. P. Kessler, author 

 of the Ichthyology of Turkestan.) 



Arum Avw/eri, STEiNDACHNER, Ichth. Beitr., iv, 24, 1876, Altata; Panama. 

 AriiiK kc^leri, JORDAN & GILBERT, Bull. U. S. Fish Comm., 1882, 40. 

 Tudtintu-Ks keaslcri, EIGENMANN, S. A. Nematognathi, 69, 1890. 



181. NETUMA INSCULPTA, (Jordan & Gilbert). 



Head 4. A. 18. Eye 6| in head ; Fontauelle gradually narrowd behind, 

 becoming a narrow groove nearly reaching occipital process ; dorsal and 

 pectoral spines subequal, 1& in head; fins pale. Panama, (imculptus, 

 sculptured.) 

 Arms insculptus, JORDAN & GILBERT, Bull. U. 8. Fish Com., 1882 (1883), 41, Panama. 



182. NETUMA PLANICEPS, (Steindachner). 



Head 3f to 4. A. 17. Shields of head rather coarsely granular ; barbels 

 very short, scarcely reaching pectoral ; caudal a little shorter than head; 

 interorbital area flat and smooth; fins dusky. Altata to Panama; not 

 rare, (planus, flat ; -ceps, head.) 

 Arius planiceps, STEINDACHNER, Ichth. Beitr., iv, 26, 1876, Altata; Panama. 



183. NETUMA PLATYPOGON, (GUnther). 



Head 3$. A. 18. Shields of head finely and irregularly granular, the 

 granules not in lines. Inner margins of palatine patches of teeth straight ; 

 fontanelle continued abruptly backward as a groove; anterior margin 

 of dorsal spine sharply serrate ; body rather elongate, the top of head 

 with an unusually large smooth area. Gulf of California to Peru; 

 generally common. (Tr/lart-f, broad; iruyuvj beard, the barbels being 

 widened at base.) 



Ariiis platypogon, GONTHER, Cat., v, 147,1864, San Jose de Guatemala. 



Arius platypogon, JORDAN & GILBERT, i.e., 44, 1882. 



Tachimrus plalypogon, EIQENMANN, S. A. Nematognathi, 71, 1890. 



184. NETUMA OSCULA, (Jordan & Gilbert). 



Head 3|. A. 18. Mouth small, with thick lips ; occipital process narrow, 

 its edges almost parallel until abruptly widened at base ; median keel well 

 developed; fontanelle broad and shallow, becoming a narrow groove 

 behind, nearly reaching occipital process. Shields coarsely and sparsely 

 granular ; interorbital space nearly plane, with smooth ridges ; barbels 

 short; fins blackish. Panama; scarce, (osculus, diminutuve of os, mouth./ 



Arius osculus, JORDAN & GILBERT, i.e., 1882, 46, Panama. 

 Taehisurns osculiw, EIGENMANN, S. A. Nematognathi, 74, 1890. 



