the San Juan [liver, Colombia. 471 



41. Cyclopiuni cirratum i Regan. 



II. Condoto (Palmer). 



12. Cyclopium ventrale, Eigenm. 

 Probably a synonym of C. cirratum. 



Pceciliidae. 



43. Rivulus elegans, Steind. 



R. Condoto (Palmer, Spurrell). 



44. Gambusia nigroventralis, Eigenm. 

 Perhaps a synonym of G. episcopi, Steind. 



45. Gambusia caudovittata, sp. n. 



Depth of body equal to length of head, 4 in length of fish. 

 Diameter of eye 3 in length of head, interorbital width 24. 

 Mouth small ; an outer series of strong curved conical teeth 

 especially prominent in upper jaw. Dorsal 8 j origin equi- 

 distant from posterior part of eye and base of caudal. 

 Anal 9 ; origin a little in advance of dorsal. Pectoral i 

 length of head. Caudal rounded. 30 scales in a longitu- 

 dinal series. Olivaceous ; a dusky bar across posterior part 

 of caudal. 



One specimen, a female, 25 mm. in total length, from the 

 Rio Condoto [Spurrell). 



Belonidae. 

 46. Belone fiuviatilis, Regan. 

 R. Condoto (Spwrell). 



Cichlidae. 



47. Cichlosoma (JEquidem) caruleopunctatum, 



Kner & Steind. 



R. Condoto and R. Tamana (Palme?'). 



48. Cichlosoma (JEquidens) biseriatum, sp. n. 



Depth of body 2£ to 2£ in the length, length of head 2| 

 to 3. Snout as long as or shorter than diameter of eve, 

 which is 3 to 3£ in length of head and about equal to inter- 

 orbital width Jaws equal anteriorly; maxillary extendin 



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