fiJO A Bevision of the American Ciclilidse. 



other are of no great importance. The species of Chaetobranchus 

 may be distinguished b}^ the following characters: — 



A. Ill, 11 or 12 ; scales 3^—25 to 27—10 or 11 ; depth 2—2^ in the length. A 

 dark spot on middle of sides on lateral line ..flaTe,SCeilS 



A. Ill, 14 or 15 ; scales 5 or 6—28 or 29—10 or 11 ; depth If— 2 in length. 

 Four broad dark cross-bands on upper part of sides ; a black spot sur- 

 rounded with white in front of upper caudal lobe semifasciatllS 



CliSBtoliraiicliiis flavesceiis Heckel. 



Cluvtohranchus Jlavescens Heck., Bras. Fluss-Fische in Ann. Wien. Mus., 1840, 

 II, p. 402 (Guapore ; Rio Negro). Giinther, Catal. Fish. Br. Mus., IV, 

 1862. p. 310 (Rio Negro and Guapore). Steind., Beitr. zur Kenntniss 

 der Chrom. d. Amazonenstronies, 1875, p. 68 (Cudajas ; Santarem ; 

 Villa Bella ; Coary ; Teffe ; Gurupa ; Rio Xingu ; Hyutay ; Rio Negro ; 

 Guapore; Hyavary ; Lake Hyanuary). Eigenmann & Eigenmann, 

 Proc. U. S. Nat. Mus., 1891, 70 (name). 



Chcetobi-anchus hrunneus Heck., 1. c, p. 405 (Rio Negro). Giinther, Cat. Fish. 

 Br. Mus., IV, 1862, p. 310 (Rio Negro). 



Chcetobranchus robustus, 1. c, p. 310 (Br. Guiana). 



Chromys ucayalensis Casteln., '* Anim. Nouv. ou Rares de I'Amerique du Sud. 

 Poissons, 1855, p. 15, pi. vi, fig. 2. Adult female." 



Geophagus badiipinms Cope, Proc. Acad. Nat. Sci. Phila., 1872, p. 251, pi. xi, 

 fig. 1, juv. (Ambyiacu). 



Habitat. — Amazons and tributaries to Guiana. 

 Many specimens of this species were collected by Hartt, marked 

 " Lower Amazon," without any more definite locality. 



Clisetoliraiiclius semifasciatus Steindachner. 



Chcetobranchus semifasciatus Steind., Beitr. zur Kenntniss der Chrom. d. Ama- 

 zonenstr., 1875, p. 70 (Obidos ; Cudajas; Teflfe ; Rio I(ja ; Lake Hyan- 

 uary; Lake Saraca, near Silva). Eigenmann & Eigenmann, Proc. U. 

 S. Nat. Mus., 1891, 70 (name). 



Habitat. — Amazons. 



2. CHi^TOBRAIVCHOPSIS Steindachner. 



Chcetobranchopsis Steind., Beitr. zur Kenntniss der Chrom. d. Amazonenstr., 

 1875, p. 73 (orbicularis). 



But a single species of this genus is known. 



Chaetoliraiicliopsis orbicularis Steindachner. 



Chcetobranchopsis orbicularis Steind., 1. c, 1875, p. 73 (Para ; Santarem ; Gurupa ; 

 Rio Xingu, near Porto do Moz ; Rio Negro ; Rio Hyanuary). Eigen- 

 mann & Eigenmann, Proc. U. S. Nat. Mus., XIV, 1891, p. 70 (name). 



Habitat. — Amazons. 



