South-American CicJiUd Genus Acara. 339 



9. Acara Geayi. 



? u4cflrrfl IfecZ-e/jV, Miill. & Trosch. in Schomburgk, Guiana, iii. p. 624 



(1848) ; Guntb. Cat. Fish. iv. p. 279 (18G2). 

 Acara Geayi, Pellepr. Hull. Mus. Paris, 1902, p. 417 ; M(lm. Soc. Zool. 



France, xvi. 1903, p. 178 (1904). 



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

 Snout longer than postorl)ital part of head. Diameter of 

 eye 2|-3 in the length of head and equal to the interorbital 

 •width. Depth of prseorbital greater than diameter of eye. 

 Maxillary not reaehing the vertical from the anterior margin 

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

 tinuous ; cheek with 4 or 5 series of scales, prjeoperculum 

 scaleless ; 7 gill-rakers on the lower part of anterior arch. 

 Scales 26-27 ^. Dorsal XIV-XV 9-11, commencing a little 

 in advance of the opercular cleft, the spines subequal from 

 the fourth, the last |-| the length of head. Anal III 8. 

 Dorsal and anal fins scaleless. Pectoral as long as the head ; 

 ventral extending to middle of anal ; caudal truncate. 

 Caudal peduncle ^- as long as deep. Brownish ; a curved 

 blackish band from the origin of dorsal through the eye to 

 the suboperculum and another from below the middle of the 

 spinous dorsal across the side nearly to the mid-ventral line. 

 Soft dorsal, anal, and caudal with light spots. 



Guiana. 



1. (84 mm.) Essequibo. Mr. Ehrhardt. 



2. (91 mm.) Cayenne. Warsaw Museum. 



10. Acara zamorensis, sp. n. 



Acara si/spilus (non Cope), Bouleng. Boll. Mus. Torin. xiv. 1899, 



no. 335, p. 6. 

 Acara vittuta (part.), PeUegr. M^m. Soc. Zool. France, xvi. 1903, p. 173 



(19C4). 



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

 shorter than the postorbital part of head. Diameter of eye 

 3 1 in the length of head, interorbital width 3. Depth of 

 prffiorbital equal to diameter of eye. Maxillary extending 

 to the vertical from anterior margin of eye ; jaws equal 

 anteriorly ; fold of the lower lip not continuous ; cheek with 

 3 series of scales ; prseoperculum scaleless ; 5 gill-rakers on 

 the lower part of anterior arch. Scales 27 ~, 1 between 

 lateral line and anterior rays of soft dorsal. Dorsal 

 XIII (XIV 9) 10, commencing behind the opercular cleft, 

 the spines increasing in length to the last, which is f the 

 length of head ; fourth spine t the length of head ; longest 



