278 ME. C. TATE BEGAN ON THE 



6. Loricaria jubata. (Plate XV. fig. 5.) 

 Loricaria jubata Bouleng. Ann. Mag. Nat. Hist. (7) ix. 1902, p. 70. 



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

 its length, diameter of eye 7-§— 8 times, interorbital width i\ times, length of snout 

 l-f-2 times. Males with bristles at the sides of the head, on the occipital region and 

 nuchal scutes, and on the pectoral spine. Supraorbital edges scarcely raised ; orbit 

 with a large triangular notch ; supraoccipital with a pair of divergent ridges ; lips 

 papillose, the lower with short marginal fringes, moderately broad, rounded, or slightly 

 emarginate ; free portion of barbel less than diameter of eye ; teeth well developed, 7 or 

 8 on each side in both jaws. 29-30 scutes in a longitudinal series, 15-17 + 13-14, the 

 lateral keels weak, obtuse, obsolete anteriorly, completely united posteriorly ; a third 

 very indistinct keel above the anterior part of the upper lateral keel on about 8 scutes 

 which form a distinct series ; nuchal scutes bicarinate. Lower surface of head naked ; 

 abdomen with 3 or 4 series of plates between the lateral series, the anterior plates 

 smaller, extending to the level of the outer angle of the gill-openings ; an anal plate 

 bordered anteriorly by 3, these 3 again by 5. First dorsal ray a little shorter than the 

 head ; pectoral spine extending to base of ventral ; first branched ray of ventral the 

 longest ; upper caudal ray strong, stout, spinous. Breadth of body at level of first anal 

 ray i\ times in the distance from that point to the caudal. Back with 4 dark cross- 

 bands ; all the fins with blackish spots on the rays. 



Total length 190 mm. 



Four specimens: N.W. Ecuador. 



7. Loricaria uracantha. 



Loricaria uracantha Kner & Steind. Abh. Bayr. Ak. x. 1866, p. 56, pi. vi. fig. 3 ; Giinth. Trans. 

 Zool. Soc. vi. 1866, pp. 393, 478. 



Allied to the preceding species, which it resembles in the position of the bristles with 

 which the male is armed, and in the strong, stout upper caudal ray. Breadth of head 

 1^-lf times in its length, length of snout 2-2^ times, diameter of eye 6-7 times, 

 interorbital width 4 times. 28 scutes in a longitudinal series, 14-16 + 12-14 ; lateral 

 keels obtuse ; usually a trace of a third keel above the anterior part of the lateral keel 

 on 1 or 2 scutes besides the 3 anterior to the dorsal, which are distinctly carinate. 

 First dorsal ray f— f the length of head ; pectoral spine extending -§ ~f of the distance 

 from its origin to the ventral. Breadth of body at level of first anal ray 3^-4 times in 

 the distance from that point to the caudal. In other characters similar to L. jubata. 



Total length 180 mm. 



Five specimens (dried) : Panama. 



