32 Oil Fishes fron the Cundoto River, Colomhia. 



Characidae. 

 1. Hoplias microlepis, Giintb. 



Anostomidae. 

 2. Leporinus striatum, Kner. 



SternarcMdae. 

 3. Sternarchus spurrellii, sp. n. 



Depth of body 7 to 8, length of head 6 to Q\ in length to 

 etui of anal fin. Width of head 2\ to 3 in its length, depth 

 at occiput 1|, length of snout 2^ to 2^, diameter of eye 12 

 to 15, interorbital width 5 to 5|. Cleft of mouth extending 

 to vertical from anterior margin of eye ; lower jaw included. 

 Vent below vertical limb of prteoperculum. Anal 164-178; 

 origin below gill-opening. Pectoral | to | length of head. 

 13 to 15 series of scales above lateral line. Brownish; a 

 pale mid-dorsal stripe from snout to origin of dorsal filament. 



Four specimens, the largest 180 mm. in total length. 



4. Sternopygus mucrurus, Schneid. 



5. Hypopomus occidentalis, sp. n. 



Depth of body 8^ to 9, length of head 7i to 8 in length 

 to end of anal fin. Snout 3^, diameter of eye 10, inter- 

 orbital width o\ in length of head. Lower jaw included. 

 Vent below middle of operculum. Anal 200-240; origin 

 below extremity of pectoral, or as far from gill-opening as 

 the latter is from eye. Pectoral a little more than | length 

 of head. Length of tail, beyond anal fin, 5 to 6 in total 

 length. Olivaceous, with numerous irregular, slightly 

 oblique, narrow, brownish cross-bands, breaking up into 

 spots below. 



Six specimens, the largest, on which the above description 

 is principally based, 150 mm. in total length. 



Loricariidae. 

 6. Loricaria jubata, Bouleng. 



7. Loricaria var'iegata. Steind. 



