384 CALIFORNIA ACADEMY OF SCIENCES. 



Anal short, high, little lower than the dorsal fin. 



Ventrals inserted very slightly behind the dorsal fin, 

 their tips reaching beyond origin of anal fin; pectorals 

 to or little beyond origin of ventral fins. 



Purplish to olivaceous; dorsal fin closely covered with 

 chocolate dots; caudal dusky, the tip of the upper lobe 

 light; anal transparent or dusky; upper surface of pecto- 

 ral and ventral fins closely covered with dark dots and 

 blotches; upper lip and barbels dotted with chocolate. 



Head 4-4 1 ; D. 8; A. 6; V. I, 5; P. I, 6; Lat. 1. 30-31. 



Forty-eight specimens .14-. 27 m. long to base of cau- 

 dal. 



Vigia; Sao Gongallo; Cameta; Manaos; Para; Rio Ne- 

 gro; Villa Bella; Gurupa; Rio Preto; Tajapuru; Porto do 

 Moz; Teffe"; Maranon; Ucayale; Obidos; Coary. Thayer 

 Expedition. 



327, Loricaria lata. 



Loricaria lata Eigenm. & Eigeam.Proc. Cal. Acad. 2d Ser. ii, 36, 



1889 (Goyaz). 

 Types: No. 8123; elevea specimens .11-. 27 m. to base of caudal. 



Goyaz. Senhor Honorio. 



Body elongate, everywhere greatly depressed, the 

 depth about If in the width, the width at origin of anal 

 equals snout and orbit in the adult, equal to the snout 

 alone in the young. Head depressed, its depth consid- 

 erably less than length of snout, its width little longer 

 than its length to upper angle of gill-opening; posterior 

 half of occipital with two inconspicuous keels. Hum- 

 eral plate without keels. 



A shallow, rounded orbital notch; interorbital very 

 slightly concave. Eye 3|-4J- in snout, 7-8 J, in head, 

 1J-1J in the interorbital. Snout pointed, its margin 

 entirely granular. Lips margined with cirri, the lower 

 emarginate, its surface also covered with cirri; teeth few, 

 large, those of the upper jaw longer. 



Nuchal plates faintly bicaririate; lateral keels rather 



