2?>i I^fr. C. T. Regan on the South- American 



These are olivaceous above, silvery below, with a dark stripe 

 from eye to middle of caudal ; 3 faint cross-bars pass through 

 3 blackish spots on the lateral stri[)e. Tiiis is very nearly 

 the coloration of C. brasiliensis, Bl., which I believe may be 

 founded on younjj^ examples of this species. Certainly none 

 of the species of Cren'icichla which have been referred to 

 C. brasiliensis resemble it to anything approaching the 

 degree that these young examples of C. temensis do. 



3. Ciclila muUifasciata. 



Ctchla toitcoitnarai (non Cichln tuciinare, Heck.), Castelu. Aniin. Am. 



Slid, Poiss. p. 17, pi. X. fifr. 1 (1855). 

 Cichln multifasciata, Castelu. o. c. p. 18, pi. x. fig. 2 ; Giiuth. Cat. 



Fish. iv. p. 305 (18G2). 



Castelnau's figures certainly suggest that a distinct species 

 of Cichia inhabits the Peruvian Amazon, differing from the 

 two preceding species in the more slender body, the more 

 backward position of the dorsal fin, which commences above 

 the posterior part of the pectoral, and in having more than 



3 or 4; dark cross-bars on the upper part of the body. 



Ch^tobraxchus. 



Ch(Ptobranc/ius, Heck. Ann. Mus. Wien, ii. 1840, p. 401 ; Giintb. Cat. 

 Fish. iv. p. 810 (18<i2) ; Steind. Sitzb. Ak. Wien, Ixxi. 1875, p. 128 : 

 Eifrenm. & Biav, Ann. Ac. N. York, vii. 1894, p. 609 ; Pelle-^T. 

 M^Qi. Sue. Zool.' France, xvi. 1903, p. 200 (1904). 



Body of moderate length, compressed ; scales large, 

 ctenoid. Two lateral lines. Mouth moderate; lower jaw 

 slightly projecting ; maxillary nearly com])letely sheathed by 

 the pneorbital ; a narrow band of small p(iinted teeth in each 

 jaw ; upper surface of head to between the orbits, cheeks, 

 and opercular bones scaly; prseoperculum entire. Gill- 

 rakers very long, slender and numerous (60 or more on the 

 lower part of anterior arch), A single dorsal, witliout notch 

 between spinous and soft portions, with XIII-XIV 13-15 

 rays. Anal with HI 10-15 rays. Pectoral asymmetrical, 

 pointed, with 14 to 16 rays; ventx'als below the base of the 

 pectorals. Caudal rounded or truncate. 



Two species from the Amazon and Guiana. 



Synojjsis of the Species. 



2 scales between last dorsal spine and lateral line .... 1. Jlavescens. 



4 .scales between last dorsal spine and lateral line .... 2. semifusciatus. 



