280 ME. C. TATE BEGAN ON THE 



the caudal. Back with 5 obscure dark cross-bands, the first through the base of the 

 dorsal ; head and anterior part of body with small blackish spots ; all the fins with dark 

 spots on the rays ; caudal blackish at the base and in its posterior half. 



Total length 95 mm. 



One specimen : R. Cadea ; Rio Grande do Sul. 



10. LORICARIA TEFFEAXA. 



Loricaria teffeana Steind. Deukschr. Ak. Wien, xli. 1879, p. 44, pi. vi. fig. 2; Eigenm. & Eigenm. 

 Proc. Cal. Ac. (2) ii. 1889, p. 39, and Occ. Pap. Cal. Ac. i. 1890, p. 379. 



Length of head 5f times in the total length. Breadth of head 1-j times in its 

 length, diameter of eye 6^ times, interorbital width 4-f times, length of snout 2^- times. 

 Snout triangular, pointed; supraorbital edges slightly raised; supraoccipital with or 

 without a pair of indistinct keels ; head otherwise evenly convex, without keels or 

 ridges. Orbit with a large notch ; lips papillose, with short marginal fringes ; free 

 portion of barbel nearly equal to the diameter of eye ; teeth well developed, 8-10 on 

 each side in both jaws. 30-31 scutes in a longitudinal series, 14-15 + 15-16, the 

 lateral keels weak, united posteriorly ; scutes in front of the dorsal with very weak 

 keels. Lower surface of head naked ; abdomen with 3 series of plates between the 

 lateral series ; anteriorly some smaller plates extending forward to the level of the inner 

 angle of the gill-opening ; an anal plate, bordered anteriorly by 3, these 3 again by 5. 

 First dorsal ray 1-^ times the length of head ; pectoral spine extending to anterior -§- of 

 ventral ; ventral rays increasing in length from the innermost outwards ; outer (spinous) 

 rays of pectoral and ventral and anterior ray of dorsal a little produced ; upper caudal 

 ray elongate. Breadth of body at level of first anal ray nearly 6 times in the distance 

 from that point to the caudal. Back with 6 dark cross-bands, the first through the base 

 of the dorsal ; dorsal with dark spots on the rays ; caudal blackish at the base and in 

 its posterior half. 



Total length 135 mm. 



One specimen : R. Amazon. 



11. Loricaria catamarcensis. 



Loricaria catamarcensis Berg, An. Mus. Buenos Aires, iv. 1895, p. 137. 



Length of head 4|—4f times in the total length. Breadth of head lf-1^ times in 

 its length, diameter of eye 6-7 times, interorbital width about 4 times, length of snout 

 2-2^ times. Supraorbital edges slightly raised ; orbit with a well-developed triangular 

 notch ; supraoccipital with a pair of well-separated obtuse keels ; lips papillose, with 

 short marginal fringes ; lower lip of moderate breadth, rounded ; free portion of barbel 

 not longer than diameter of eye ; jaws with about 8 teeth on each side. 28-29 scutes 

 in a longitudinal series, 15-16 + 12-13 3 all the scutes in front of the dorsal carinate, the 



