276 Mil. C. TATE BEGAN ON THE 



3. LOFJCAEIA PAEVA. 



Lorrcaria parva Bouleng. Proc. Zool. Soc. 1895, p. 527, and Trans. Zool. Soc. xiv. 1896, pi. viii. 

 fig. 1. 



Length of head about 5 times in the total length. Breadth of head nearly 1J times 

 in its length, diameter of eye about 6 J times, interorbital width 3—3^ times, length of 

 snout twice. Snout rounded anteriorly. Supraorbital edges slightly raised, head other- 

 wise evenly convex, without keels or ridges ; orbit with a broad rounded notch ; lips 

 papillose, with short marginal fringes, the lower of moderate width, slightly emarginate ; 

 free portion of barbel a little longer than the diameter of eye ; teeth well developed, 

 about 8 on each side in both jaws. 28-29 scutes in a longitudinal series, 13-15 -f- 

 13-16, the lateral keels united posteriorly, the scutes in front of the dorsal not, or very 

 indistinctly, carinate. Lower surface of head naked ; abdomen with 3 series of plates 

 between the lateral series, anteriorly some smaller plates to the level of the inner 

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

 First dorsal ray 1-j— If 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 usually more or less 

 produced : outer caudal rays elongate. Breadth of body at level of first anal ray 4f-5 

 times in the distance from that point to the caudal. Back with 6 dark cross-bands ; a 

 black stripe on each side of the snout running forward from the eye ; all the fins with 

 dark spots on the rays ; dark spots on membrane at base of dorsal, pectorals, ventrals, 

 and caudal ; caudal with a more or less distinct blackish marginal or intramargiual 

 band. 



Total length 100 mm. 



Eight specimens : Descalvados, Matto Grosso, Paraguay System. 



4. LORICAKIA PHOXOCEPHALA. 



Loricaria phoxocephala Eigenrn. & Eigeran. Proc. Cal. Ac. (2) ii. 1889, p. 37, and Occ. Pap. Cal. 

 Ac. i. 1890, p. 373. 



Length of head 4f- 5 times in the total length. Breadth of head lf-l| (young) times 

 in its length, diameter of eye 6-7 times, interorbital width 3f times, length of snout 

 Xf-2 times. Snout triangular, pointed ; supraorbital edges not or slightly raised ; supra- 

 occipital with a pair of very indistinct keels ; head otherwise evenly convex, without 

 keels or ridges. Orbit with a broad rounded notch ; lips papillose, with short marginal 

 fringes, the lower of moderate width ; free portion of barbel a little longer than the 

 diameter of eye ; teeth well developed, 9 or 10 on each side in both jaws. 29 scutes 

 in a longitudinal series, 14+15, the lateral keels weak, united posteriorly, all the scutes 

 in front of the dorsal weakly carinate. Lower surface of head naked ; abdomen with 

 3 series of plates between the lateral series ; anteriorly some smaller plates to the level 



