158 MEMOIRS OF THE CARNEGIE MUSEUM 



Leptoglanis" gen. nov. 



Leptoglanis Eigenmann, Repts. Princeton Univ. Exp. Patagonia, III, 1910, 384 



(name onl}"). 



Type, Leptoglanis essequibensis sp. nov. 



First dorsal ray soft or a minute spine; pectoral spine short but strong; origin 

 of ventrals under posterior half of dorsal, far in advance of the middle; adipose 

 fin long and low, continuous with caudal; caudal rounded; anal long; top of head 

 covered with a thick layer of muscle; an oval fontanel at the base of the occipital 

 process; premaxillary patch of teeth subrhomboidal, with the outer posterior angle 

 prolonged backward. 



35. Leptoglanis essequibensis sp. nov. (Plate XIII, fig. 2.) 



Leptoglanis essequibensis Eigenmann, Repts. Princeton Univ. Exp. Patagonia, 

 III, 1910, 384 (name only). 



Type, 156 mm. Crab Falls. (Carnegie Museum Catalog of Fishes No. 1652.) 

 Cotypes, four specimens, 90-170 mm. Crab Falls. (I. U. Cat. No. 12041.) 

 Cotypes, five specimens, 50-170 mm. Warraputa. (C. M. Cat. No. 1653a; 

 I. U. Cat. No. 12042.) 



Cotype, one specimen, 66 mm. Konawaruk. (C. M. Cat. No. 1654a.) 

 Head 4-4.9; depth 9.5; D. 7 or 1,6; A. 15-17; eye 2.5-3 in snout, 8-11 in 

 head. 



Elongate, depth of caudal peduncle equals depth at eyes; depth behind dorsal 

 equals depth of head, which is equal to half its width; occipital crest very short, 

 not nearly reaching dorsal; eye superior; anterior nostrils tubular, extending be- 

 yond upper lip; posterior nostrils nearer the eyes than to the anterior; head, and 

 especially the snout, depressed; mouth terminal, the lips thin, plicate; premaxillary 

 patch of teeth subrhomboidal, the outer angle much prolonged, its depth at the 

 middle about 1.5 in its outer edge; an oval fontanel at the base of the occipital 

 process; no frontal fontanel. 



Angle of the mouth considerably in advance of the eye ; maxillary barbel reach- 

 ing to middle of dorsal in the adult, farther in the young; outer mental barbels on a 

 line with the angles of the mouth, reaching the opercle; inner mental barbels con- 

 siderably in advance of the outer, their distance from the edge of the lower lip 

 equal to the distance between the outer barbels; four large pores on the lower lip. 

 Pectoral spine strong, its length equal to half the length of the head, with 

 teeth along the basal parts of both edges, much stronger in the young; pectorals 



" XeTTxis, slender, 7X<i>'i!, cat-fish. 



