SOUTH AMERICAN NEMATOGNATHI. 379 



321, Loricaria teffeana. 



Loricaria teffeana Steindachner, Denk. Ak. Wien, Ixi, 44, pi. vi, 

 1879 (Amazon, near Teffe); Eigenm. &Eigenm. Proc. Cal. Acad. 

 2d Ser. ii, 39, 1889 (Cudajas; Tenanting; Teffe; Jutahy; Lago 

 Alexo; Tabatinga). 



Habitat: Solimoens. 



Depth 1|-1| in the width. Head depressed, its depth 

 2 in its length to upper angle of gill-opening, its width 

 equal to its length to upper angle of gill-opening. Occi- 

 pital with two parallel ridges in the young, which 

 diverge in the adult. 



An orbital notch of moderate size. Eye 2J 3J in 

 snout, 5J-7 in the head, 1J-1J in the iiiterorbital. 

 Snout moderately acute, its tip with a narrow naked 

 space. Teeth numerous, well developed; lower lip 

 fringed with rather long cirri. Breast with numerous 

 small plates; five longitudinal series of plates on the 

 belly; a rather large anal plate, bordered anteriorly by 3 

 plates, these three by 5 others. Nuchal plates bicarinate; 

 lateral keels uniting more or less completely on the 15th 

 lateral scute. 



Distance of dorsal fin from tip of snout 3J-3f in the 

 length; first dorsal ray higher than length of head. 

 Upper caudal ray produced, about 2J in the length. 

 Height of anal, pectoral and ventral fins about equal, the 

 first ray of each thickened. 



Pores of the head blackish, a series of six surrounding 

 the eye, one pore near the anterior tip of the occipital 

 plate, other pores above the gill-opening and above the 

 nares. 



Color very variable: dark brown in young with six 

 blackish cross bands, the first and last narrowest; outer- 

 most caudal rays spotted, the rest of the fin black; tip of 

 dorsal fin black, the rays spotted; anterior rays of the 

 anal, ventral and pectoral spotted; two brownish spots 

 on the upper lip. Specimens .14m. to base of caudal are 



