SOUTH AMERICAN NEMATOGNATHI. 137 



74. Duopalatiiius emarginatus (Cuv. & Val.) 



Localities: Eio Sau Francisco; Kio das Velhas. 



XVIII. Steindachneria gen. iiov. 



Type, Steindachneria amblyurus nov. 



No teeth on the palate; teeth on the vomer in one or two 

 patches; no dermal ossifications about the head; adipose fin 

 much longer than anal. 



75. Steindachneria amblyurus sp. nov. 



Pluty stoma parahybce Steindacbner (in part.) 



Types, No. 7324, 2 specimens; ..35 and .38 m. long. .Jequitinhonba. 

 Hartt & Copeland. 



Body slender. Head much depressed, its width at the 

 angle of the mouth is two-thirds of the greatest width of the 

 head which equals its length. 



Eye 3 in snout, 8.^ in head, 3| in interocular. 



Maxillary barbels extending to the adipose fin. 



Teeth on the vomer in two patches. 



Dorsal spine slender, 2i-3 in head, the rays 1\ to 2. Base 

 of the adipose fin almost twice as long as the base of the 

 anal. Pectoral spine 2 in head; its outer margin roughened, 

 its inner margin with sharp teeth. Caudal fin broadly 

 rounded. 



Upper parts brownish, marked with round spots which 

 are smallest on the head, sometimes confluent into vermicu- 

 lations; adipose and caudal fins with spots; membrane of 

 dorsal fin sometimes with a vertical series of spots; other 

 fins dusky. 



Head 4; Depth 7^; Br. 9 or 10; D. I, 6; A. 12. 



S. parahyhce has the caudal deeply lobed, D. I, 7. 



76. Steindachneria parahybae (Steindachner.) 



Locality: Rio Parahyba near -Jiiiz de Fora. Types. 



XIX. Gen. nov. '? 



Palatine teeth present, forming, with the vomerine teeth, 

 a narrow uninterrupted band . 



77. Platystoma liitkeni Steindachner. 



