70 On Tioo new Fishes of (he Genus L)ricarl;i. 



boyond tlio lip ; liead-shicMs finely spinulose, without rid-^ns 

 or keels ; eye in posterior ^ of head, 4 to 5 times in length of 

 snout, 2^ to 3 times in interorbital width ; no postorbital 

 notch ; lower labial fold large, papillose, not notched, not 

 distinctly fringed. Dorsal I 7 ; first ray as long as or a little 

 longer than the head, just above base of ventral. Poctoral 

 I fi, as long as or a little shorter tlian the head, reaching a 

 little boyond base of ventral. Ventral I f), shorter than the 

 pectoral, reacliing beyond origin of anal. Anal I 5. Upper 

 and lower caudal rays produced into filaments. Lateral 

 scutes 32-33, with two very indistinct obtuse keels, becoming 

 stronger on the tail and uniting on the sixteenth or seventeenth 

 scute; nuchal scutes without keels; 21 scutes between 

 dorsal and caudal, 19 between anal and caudal. Breast and 

 belly shielded; pectoral scutes numerous, polygonal; ventrals, 

 9 or 10 transversely enlarged ones on each side, and 3 or 4 

 series of smaller ones in the middle. All the scutes spinu- 

 lose, but not striated. Male with a band of short hair-like 

 bristles on each side of the head from the mouth to the gill- 

 cleft. Olive-brown above ; a black band along each side of 

 the head, passing througli the eye, sometimes continued on 

 the body ; base and anterior half of dorsal fin black, posterior 

 lialf white, with or without a few black spots; other fins 

 white, with large black blotches ; a black crescentic band on 

 the base and lobes of the caudal. 



Total length 240 millim. 



Several specimens from St. Javier (60 feet), Salidero 

 (350 feet), and the Rio Durango (350 feet). 



Allied to L. rostmta, Spix, and L. panainensis^ Eigenm. 



Loricaria juhata. 



Teeth small, few. Head If to 1^ as long as broad, 

 43 to 5 times in total length ; snout much flattened, 

 pointed, feebl}' projecting beyond the lip; head-shields spinu- 

 lose, with a blunt ridge above the eye extending to the snout 

 below the nostril ; eye in posterior half of head, 3^ to 4 times 

 in length of snout, \'i or If in interorbital width ; a narrow 

 postorbital notch ; lower labial fold large, strongly papillose, 

 fringed but not notched. Dorsal 1 7 ; first ray i or •? length 

 of head, just above base of ventral. Pectoral I (5, I to | 

 length of head, reaching base of ventral. Ventral I 5, as 

 long as pectoral, reaching a little beyond origin of anal. 

 Anal I 5. Lateral scutes 28-2i), with two obtu.se kecLs 

 uniting on the fifteenth or sixteenth scute; nuchal .scutes 

 with two feeble koel.'^; 18 or 19 scutes between dorsal and 



