348 Mr. G. A. Boulenger on new Siluroid Fishes 



Bufo philippinicus. (PI. X. fig 5.) 



Cranial ridges rather similar to those of B. Mporcatus {cf. 

 Boul. Cat. Batr. Ecaiul. p. 311, fig.); b^^t the supraorbital 

 ridge ending in a very short branch, directed inwards and 

 distinct from the parietal, which is more thickened. Snout 

 short, truncate ; canthus rostralis prominent ; interorbital 

 space broader than the upper eyelid ; tympanum very distinct, 

 vertically oval, smaller than the eye — the vertical diameter of 

 the right side is 4^ millim., of the left side 4 millim., and the 

 horizontal diameter of the eye 6^ millim. First finger 

 extending much beyond second ; toes half-webbed, with simple 

 subarticular tubercles ; no tarsal fold. The tarso-metatarsal 

 articulation reaches the eye. Upper parts with small, conical, 

 spiny tubercles ; parotoids oval, as long as their distance from 

 the anterior border of the orbit. Olive above, with darker 

 insuliform spots; cranial ridges reddish brown. 



The unique female specimen measures 75 millim. from 

 snout to vent. 



XLIII. — On neio Sihiroid Fishes from the Andes of Columbia. 

 By G. A. Boulenger. 



A SMALL collection of Fishes made by Mr. F. A. Simons in 

 Columbia (locality not mentioned), and purchased a few years 

 ago by the Trustees of the British Museum, consists of five 

 species, viz. : — Trichomycterus dispar^ Tsch. {rnaculatus, C.& 

 v.), T. tcenia, Kner, and the three novelties of which 

 descriptions follow. 



Stygogenes Guentheri. 



D. 1/6. A. 6. P. 1/9-10. V. 1/4. 



Head as broad as long, two sevenths of the total length 

 (without caudal). Eyes very small, about one fourth the 

 width of the interorbital space, midway between the anterior 

 nostril and the posterior border of the head. Barbel not quite 

 half the length of the head. Dentition and labial folds as in 

 8. Humboldtii. A small rough spine to the adipose fin; 

 sometimes another at the base of the caudal. Outer ray of 

 each paired fin thickened, flexible, slightly prolonged, covered 

 with small spines directed backwards; outer pectoral ray 



