372 CALIFORNIA ACADEMY OF SCIENCES. 



Teflfe; two specimens, No. 8105, from the Rio Preto 

 .15-. 20 m., and three specimens, No. 8103, from the Rio 

 Puty .17-.21 in. differ from typical examples in having a 

 more angular orbital notch, and the fins, especially the 

 pectorals and ventrals, much less spotted. 



313. Loricaria spixii. 



Loricaria spixii Steindachner, Fhissfische Sudani, iii, 4, pi. ii, 1881 

 (Eio Parahyba; Santa Cruz; Kio Muriahe; Sao Matheos; Sam- 

 baia; Kio Grande do Sul); Eigenm. & Eigenm. Proc. Cal. Acad. 

 2d Ser. ii, 37, 1889 (Santa Cruz; Rio Quenda; Sambaia; Mendez; 

 Campos; Muriahe; Sao Matheos). 



Habitat: Southeastern Brazil. 



Depth of the body li-lf in its width. Head long, 

 parabolic; transverse profile of the occiput gently arched; 

 occipital terminating in an attenuate occipital process 

 which is margined by two or three nuchal plates. In- 

 terorbital flattish, loreal region and anterior profile con- 

 vex, the anterior margin of the snout naked, the naked 

 area margined by a narrow granular band below. Oc- 

 cipital without keels. Surface of the head and scutes 

 of body hispid. 



Orbit with a triangular notch of moderate size. Or- 

 bital diameter without its notch, 3-3 J in the snout, 6.1-7 

 in the head, IJ-lf in the interorbital. Lower surface 

 of the head and snout naked except the narrow marginal 

 band. 



Both jaws with a few minute teeth. Upper lip and 

 barbels fringed; lower lip of moderate width in females, 

 greatly expanded and reaching beyond the gill-openings 

 in males. 



Breast covered with plates of irregular shape; middle 

 of belly with 3-4 series of plates; a large anal plate 

 usually margined in front by 2-3 plates which are at- 

 tached to a row of smaller plates in front; these, with the 

 anal plate, form a ventral buckler. Nuchal plates ob- 

 scurely bicarinate; lateral keels remaining distinct but 



