44 CALIFORNIA ACADEMY OF SCIENCES. 



69. Hemiancistrus heteracanthus (Gunthei). 



70. Hemiancistrus megacephalus (Guntber). 



71. Hemiancistrus vittatus (Steiudachuer). 



Localities: Kio Trombetas: Porto do Moz; Tajapuru; Obidos; Avary. 



XIII. Parancistrus Bleeker. 



72. Parancistrus punctatissimus Steiudachuer. 



? Hypodomus niveaius Casteluau. 

 Locality: Porto do Moz. 



73. Parancistrus aurantiacus (Casteinau). 



74. Parancistrus nigricans (Casteinau). 



XIV. CocHLiODON Heckel. 



75. Cochliodon cochliodon (Kner). 



C. hypodomus Heckel; Loricariu inelanoptei'a Natterer. 



XV. Panaque gen. iiov. 



Type: Chcetostomus nlgrollneatus FeierH, 



Teeth enlarged, bowl-shaped at tip, few in each jaw. In- 

 teropercle with a bunch of erectile spines. 



76. Panaque nigrolineatus (Peters). 



Localitj': Goyaz. 



77. Panaque cochliodon (sive gibbosus) (Steiudachuer). 



78. Panaque dentex (GUuther). 



XVI. Pterygoplichthys Gill. 

 Liposarcus Giinther. 



79. Pterygoplichthys undecimalis (Steiudadmer). 



80. Pterygoplichthys etentaculatus (Spix). 



Hypostomus duodecimalis Cuv. & Val. H. hreviientaculatus Eauzaui; 



Ancistrus lonfjimdnus Kner, 

 Locality: llio Sau Francisco below the falls. 



81. Ptery^oplichthys gibbiceps (Kner). 



Liposarcus altipinnis Giiuther; ? L. scrophus Cope. 



Localities: Coary; Teffe; Porto do Moz; Lago Alexo; Cudajas; Lake 



Hyanuary; Sautarem; Tabatinga; Lago do Maximo; Jutahy; Villa 



Bella; Silva, Lake Saraca; Obidos. 



