Eigenmann: New and Rare Fishes from South America. 85 



slightly emarginate, the outer rays a little prolonged. Four dark 

 cross-shades, one behind eyes, one at end of dorsal, one at adipose, 

 and one at base of caudal; a row of large dark spots on each of the 

 dorsal membranes; caudal, anal, ventrals, and pectorals with similar 

 spots on rays and membranes; similar obscure dark spots on the 

 sides, larger ones on the belly; faint light streaks along the carinse 

 of the lower rows of plates. 



Named for Hugh McK. Landon of Indianapolis. 



II. Pseudancistrus carnegiei sp. nov. 

 7346, C. M., type, no mm.; 13661 I. U. M., two paratypes, 87 and 



no mm. Rio San Gil, Santander, Colombia. Gonzales. 

 7347a-d, C. M., paratypes, 13662, I. U. M., nine, largest 41 mm. 



Quebrada de Honda, Santander, Colombia. Gonzales. 



Most readily distinguished by the number of dorsal rays. 



Measurements of two Males, the Type and Largest Paratype from the 



Rio San Gil. 



Mm. 



Length to base of plates at root of caudal 82 



Length of head 30 



Depth of body 15 



Width of head 30 



Depth of head 13 



Interorbital width 7.5 and 8 



Ramus of lower jaw 9 



Length of snout 18 



Length of eye 3 



Length of dorsal spine 15 and 17 



Length of last dorsal ray 11 and 12 



Length of base of dorsal 20 and 21 



Distance of dorsal from spine of the adipose 12.5 and 12 



Length of caudal peduncle 20.5 and 22 



Depth of caudal peduncle 8 and 8.5 



Length of pectoral spine 35 



Length of ventral 20 and 21.5 



Length of anal 10 



Distance from snout to dorsal 37 and 38 



Distance from snout to ventral 41 



Head 2.66; depth 5.46; D.I, 9 in nine of the specimens, I, 8 in 

 two; A.I, 5; plates 25 or 26, 7 between the dorsals, 10 or 11 between 

 anal and caudal; eye 10 in the head; ramus of lower jaw a little 

 greater than interorbital. 



