South -American Ct'cliHd Genus Acara. 341 



in tlie length of licad/interorbital ^^idth 2|. Depth of pric- 

 orhital | the diameter of eye. Maxillary extending to the 

 vertical from anterior margin of eye ; jaws eqnal anteriorly ; 

 fold of the lower lip continuous ; cheek with 3 series of 

 scales ; prfeopcrculum scaleless ; 5 gill-rakers on the lower 

 part of anterior arch. Scales 25 ^. Dorsal XIII 10, com- 

 mencing above the 0|)crcnlar cleft, the spines subeqnal from 

 the fourth, the last nearly ^ the length of head, the middle 

 soft rays elongate, extending to the end of caudal. Anal 

 III 7. Soft dorsal and anal scaly at the hase. Pectoral 

 longer than the head ; ventral extending a little beyond tlie 

 origin of anal; caudal rounded. Caudal peduTicle *f as long 

 as deep. Body with 5 or 6 dark cross-bars, the second 

 crossing the 7th to 10th scales of the lateral line and bearin"- 

 a large darker blotch below the lateral line ; the third and 

 fourth bars with smaller and fainter blotches ; a dark bar 

 below the posterior part of eye and a dark spot on the upper 

 half of the br.se of caudal ; soft dorsal, posterior part of anal 

 and base of caudal spotted. 

 Guiana. 



1. (110 mm.) type of the sjiedes. CTuiana. Berlin Museum. 



] 3. Acara portalegrensis. 



? Acara diments, Ileck. Ann. Mus. Wien, ii. lS4rO, p. .341 • Glinth Cat 



Fish. iv. p. 277 (18G2). 

 Acara portalegrensis, Hensel, Arch. f. Nat. 1870, p. .52 ; Pelle^r. Mem 



Soc. Zool. France, xvi. 1903, p. 173 (1904). ^ " ' 



Depth of body 2 in the length, lengtli of head 2?-3. 

 Snout shorter than postorbital part of head. Diameter of 

 eye 2^-3| in the length of head, interorbital width 2:^-21. 

 Depth of prseorbital ^— | the diameter of eye. MaxillaiV 

 extending to or beyond the vertical from anterior mar^-in of 

 eye ; jaws equal anteriorly ; fold of the lower lip not con- 

 tinuous ; cheek with 2-3 series of scales; prajoperculum 

 scaleless ; 5 or 6 gill-rakers on the lower part of anterior 

 arch. Scales 24-26 ^^. Dorsal XIV-XVI 9-11, com- 

 mencing above the opercular cleft, the spines not or but 

 slightly increasing in length posteriorly, the last f-i the 

 length of head, the longest rays extending to middle of 

 caudal or beyond. Anal III 8-10. Soft dorsal and anal 

 scaly at the base. Pectoral as long as the head ; ventral ex- 

 tending to origin of anal or beyond ; caudal rounded. 

 Caudal peduncle A-f as long as deep. Body with 8 or 9 

 daik cr( ss-baiids, the third bearing a blackish blotch below 



