8 Annals of the Carnegie Museum. 



6\ in its distance from the caudal ; 17 or 18+14 scutes, the keels 

 remaining separate throughout ; upper lip not developed in the 

 middle, entire on the sides in the largest specimen, fringed in the 

 type; lower lip notched in the middle, deeply concave on each side 

 in the type ; the barbel extends considerably beyond the widest part 

 of the lip, its free portion equal to the eye. Margin of the lower lip 

 notched. Lips smooth. Lower lip in the largest specimen damaged, 

 apparently reaching to the gill-opening, with a marginal fringe of 

 tentacles. 



Teeth excessively minute, twenty or more on each side of the lower 

 jaw ; about eight conical teeth on each side of the upper jaw. 



Plates in front of the fourth dorsal ray keeled, a pair of keels on the 

 occipital ; eyes Avith large angular notches which encroach on the in- 

 terorbital in the largest specimen. Anal plate pointed in front, bor- 

 dered by two or three plates, the three together united into a larger 

 plate in the largest specimen; ventral buckler formed of six plates; 

 apparently only four in the largest, a single series of plates between the 

 lateral series, two or more series further forward. Ventral armature 

 reaching to the gill-opening, lower surface of head naked. 



Pectorals truncate, the spine not produced, scarcely reaching ven- 

 tral ; ventral rounded or the rays graduate, reaching to, or a little 

 beyond, the origin of the anal. Dorsal spine equal to distance from 

 snout to upper angle of gill-opening. 



Five or six cross-bands, the first extending down and forward from 

 the third and fourth dorsal rays, the second being a large spot on 

 the sides a little in front of the tip of the dorsal ; dorsal spotted, most 

 conspicuously so at its tip ; pectorals dusky, or faintly spotted ; ventrals 

 a little lighter ; anal hyaline ; caudal faintly spotted ; the tip of the 

 lower lobe black. Upper caudal ray scarcely produced. 



Loricaria griseus sp. no v. 



Type, 131 mm. over all, 118 to tip of middle caudal rays. (No. 

 1504 Carnegie Museum Catalog of Fishes.) Conawaruk. 



Cotypes, 11 specimens, 36-108 mm. to base of middle caudal ray. 

 Conawaruk. (C. M. Cat. No. 1505, a-c ; I. U. Cat. No. 11926.) 



Cotypes, 22 specimens, 49-119 mm. to base of middle caudal rays. 

 Bartica Sand Bank. (C. M. Cat. No. 1506, a—e ; I. U. Cat. No. 

 11927.) 



Allied to punctatus and maculatus. 



