464 Mr. C. T. Regan on the Fishes of 



and opposed to inner prsemaxillary series, 4 on each side, 

 the fourth considerably smaller than the others and leading 

 to the small lateral teeth ; maxillary extending to below 

 anterior j of eye, proximally with 1 or 2 small teeth. 

 Second suborbital completely covering cheek. 38 scales in 

 lateral line, 5^ from origin of dorsal to lateral line, 5 thence 

 to base of pelvics. Dorsal 10 ; origin behind base of pelvics, 

 slightly nearer end of snout than base of caudal. Anal 32 ; 

 origin a little behind middle of dorsal ; a scaly sheath at its 

 base ; third to fifth and ninth to thirteenth rays armed with 

 series of hooks. Pectoral extending to pelvics, latter to 

 origin of anal. Caudal forked. Olivaceous; a bluish-silvery 

 lateral band ; no humeral or caudal spots ; fins immaculate. 

 ■ A single specimen, 57 mm. in total length, from the 

 Condoto (Spurrelf). 



7. Bryconamericus rubricauda, sp. n. 



Depth of body 2^ to 3 in length, length of head 3| to 4. 

 Snout shorter than diameter of eye, which is 2\ to 2| in 

 length of head, equal to or greater than interorbital width. 

 Maxillary extending to below anterior ^ of eye. Second 

 suborbital covering cheek, its greatest width from § to as 

 long as eye. Scales 34 to 38 in lateral line, 5 or 6 from 

 origin of dorsal to lateral line, 4 or 5 thence to base of 

 pelvics. Dorsal 10-12 ; origin behind base of pelvics, equi- 

 distant from anterior part of eye and base of caudal ; longest 

 ray a little shorter than head ; free edge straight or a little 

 convex. Anal 30-33; origin below end of dorsal; a scaly 

 sheath at its base. Pectoral extending to pelvics, which 

 reach origin of anal. Caudal scaly at base only. Oliva- 

 ceous ; a bluish-silvery lateral band ending in a blackish 

 caudal spot ; base of anal and proximal part of caudal lobes 

 brilliant orange. 



Eight specimens, 35 to 70 mm. in total length, from the 

 Rio Condoto [Palmer, Spurrell). 



8. Bryconamericus juanensis, sp. n. 



Depth of body 2i to 3 in length, length of head 4 to 4^. 

 Snout shorter than diameter of eye, which is 2^ to 2§ iu 

 length of head, equal to or greater than interorbital width. 

 Maxillary extending to below anterior margin or \ of eye. 

 Second suborbital covering cheek, its greatest width ^ to § 

 diameter of eye. Scales in lateral line 35 to 37, 6 or 7 from 

 origin of dorsal to lateral line, 5 or 6 thence to base of 

 pelvics. Dorsal 11; origin behind base of pelvics, nearly 



