256 Field Museum of Natural History — ZoOlogy, Vol. X. 



bb. Lateral keels 3, the upper one present on 8th or 9th scute, the other 

 two approximated on the i6th to i8th scute; predorsal scutes 

 strongly carinate; abdomen with 2 series of plates between the 

 enlarged lateral series; a naked area behind pectoral; maxillary 

 barbel longer than eye. filatnentosa latiura, p. 257. 



aa. Ventral surface of abdomen partly naked. 



c. Lateral keels 2; margin of lower lip with long fringes; maxillayr 

 barbel reaching to or past gill-opening; 3 or 4 teeth on each side 

 in upper jaw. variegaia, p. 258. 



cc. Lateral keels 3; lower lip with short fringes; maxillary barbel 

 never reaching gill-opening; 8 to 10 teeth on each side in upper 

 jaw. 



d. Anterior rays of dorsal reaching past posterior rays when defiexed, 

 the longest ray notably longer than head; anterior rays of anal 

 reaching past posterior rays when defiexed, the longest ray 

 longer than width of head. capetensis, p. 259. 



dd. Rays of dorsal reaching equidistant when defiexed, the longest 

 ray not quite as long as head; rays of anal reaching equidistant 

 when defiexed, the longest equal to width of head. 



fimbriata, p. 260. 

 12. Loricaria uracantha Kner & Steindachner. 



Loricaria uracantha Kner & Steindachner, Abhandl. K. Bayer. Ak. 

 Wiss. Munchen, X, 1866, 56, PI. VI, figs. 3, 3a, 3b (New Granada; 

 Rio Chagres); Gunther, Trans. Zool. Soc. London, 1866, 393 and 

 478 (Atlantic and Pacific rivers of Panama); Eigenmann & Eigen- 

 mann, Occ. Pap. Cal. Ac. Sci., I, 1890, 370 (Atlantic and Pacific 

 slopes of Panama); Regan, Trans. Zool. Soc. London, XVII, Pt. 

 Ill, 1904, 278 (Panama). 

 Loricaria bransfordi Gill, Proc. Ac. Nat. Sci. Phila., 1876, 338 (Panama). 

 Head 4.3 to 4.9; depth 9.5 to 14; D. I, 7; A. I, 6; lateral scutes 28 or 

 29. 



Body low, depressed throughout; caudal peduncle much broader 

 than deep; head very low; snout obtuse, its margin granulate, or with 

 very numerous short bristles in large males, the length 2 to 2.15 in 

 head; a distinct orbital notch; eye 7 to 9.5 in head; interorbital with a 

 ridge over each eye, 3.7 to 4.6 in head; mouth rather narrow; premaxil- 

 laries with about an equal number of bifid teeth, from 6 to 10 on each 

 side; the hps large, papillose, the margin of the lower lip fringed; the 

 barbel shorter than eye; lower surface of head naked, the rest of the 

 head and body completely covered with bony scutes or plates; 2 lateral 

 keels anteriorly, becoming completely united on the 15th or i6th scute; 

 occipital and predorsal scutes carinate; scutes on chest and abdomen 



