Jordan and Ever mann. — Fishes of North America. 127 



Neluma duhia, Bleeker, Versl. Med. Ac. Wet. .\mstcrd., xiv, 382, 1802, Surinam. 



Alius, tithius, GiNTiiEn, Cat., v, 144, 1804. 



Tuchitiiinis duhius, EuiE.NMAN.N, S. A. Nematoguathi, O'J, 1890. 



ISO. NETUMA KESSLERI, (StPiixiachn.T). 

 Head large, 3A ; caudal not I bead; foutauelle 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 Ichthj'ology of Turkestan.) 



Aiiiii kessleri, Steindaciiner, Iclith. Beitr., iv, 24, 1876, Altata; Panama. 

 Ariiis AeWeri, Jordan & Gilbert, Bull. U. S. Fish Comm., 1882, 40. 

 Tachhitnis kessleri, ElOENMANN, S. A. Nematognathi, 69, 1890. 



181. XETUMA IXSCULPTA, (Jordan A Gilbert). 



Head 4. A. 18. Eye 6^ in head ; Fontanelle gradually narrowd behind, 

 becoming a narrow groove nearly reaching occipital process; dorsal and 

 Xiectoral spines subequal, 1^ in head; tins pale. Panama, {innculptus, 

 sculptured.) 



Arins insculptus, Jordan & Gilbert, Bull. U. S. 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, Qat', -ceps, head.) 

 Arius phmiceps, Steindachnek, 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. {nXarvc, broad; Trwyui', beard, the barbels being 

 widened at base.) 



Arim platypogon, GCnther, Cat., v, 147,1864, San Jose de Guatemala. 



Arins platypngon, Jordan & Gilbert, /. c.,44, 1882. 



Tachisuriis platy2)ogoH, Eioenmann, S. A. Nematognathi, 71, 1890. 



184. NETUMA OSCULA, (Jordan Sc Gilbert). 



Head3|. A. 18. Mouth small, with thick lips; occipital process naiTow, 

 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. (osc«/u»,diminutuvoof os,mouth./ 



Aritts oiiculns, Jordan & Gilbert, J. c-., 1882, 46, Panama. 

 TacAisiinis osmUis, Eigenmann, S. A. Nematognathi, 74, 1890. 



