310 Mr. C. T. Regan on (he Fishes of the 



soft rays extending to anterior ^ of caudal. Anal III (7-8) 9. 

 Dorsal and anal tins scaleless. Pectoral ^ the length of 

 bead ; ventral extending to origin of anal ; caudal subtruu- 

 cate. Caudal peduncle 11 as long as deep. Keddish brown, 

 with about 7 blackish cross-bars, the first three bearing 

 longitudinally expanded blotches below the lateral line; a 

 faint dark bar below the jjosterior part of eye ; a dark spot 

 at the base of caudal ; sides of head and anterior part of 

 body with blue spots ; vertical fins dusky, posterior part of 

 dorsal and the caudal obscurely spotted. 

 Amazons of Ecuador. 



1. (101 mm.) type of the species. Itio Zamora. Dr. II. Festa. 



11. Acara sapayensis. 



Acara sapayensis, Ileg-an, Auu. & Mag. Nat. Hist. (7) xii. 1903, p. 028. 

 Acara rioulafa (part.), Pellogr. Mem. Soc, Zool. France, xvi. 1903, 

 p. 177 (1!)04). 



Depth of body 2:-] in the length, length of head 2§. Snout 

 a little shorter than postorbital part of head. Diameter of 

 eye 3j in the length of head, interorbital width 2;^. Depth 

 of prseorbital | the diameter of eye. Maxillary extending 

 to the vertical from the anterior margin of eye ; lower jaw a 

 little shorter than the upper ; cheek w ith 3 series of scales ; 

 prseopcrculum scaleless ; 5 gill-rakers on the lower part of 

 anterior arch. Scales 26 ^, 1 between lateral line and ante- 

 rior rays of soft dorsal. Dorsal XV 10, originating behind 

 tlie opercular cleft, the spines increasing in length to the 

 last, which is |- the length of head ; I'oui th spine ^ the length 

 of head ; soft fin pointed, the longest rays extending beyond 

 the middle of caudal. Anal 111 8. Dorsal and anal fins 

 scaleless. Pectoral nearly as long as the head ; ventral ex- 

 tending to origin of anal ; caudal subtruneate. Caudal 

 peduncle i as long as deep. Brown, with 6 or 7 blackish 

 cross-bars on the upper half of the body, extending on to 

 the base of the dorsal fin ; some oblique IJue lines from eye 

 to maxillary and blue spots on the side of the head; vertical 

 fins duskv. 



N.W. Ecuador. 



1. (114 mm.) type of tlie .species. R. Sapayo. Mr. Ko^enberg. 



12. Acara guianensis, sj). n. 



Depth of body 2 in the length, length of head 3. Snout 

 shorter than postorbital part of head. Diameter of eye ^\ 



