American Ciclilld 6''e??t/6- Cielilosoma. 323 



Chromys fascicda, Casleln. o. c. p. 17, pi. ix. fi^. 2. 



Uaru centrarchoides, Cope, Proc. Ac. Philad. 1872, p. 253, pi. xi. 



fig. 2. 

 Acnra (Heros) sjmria, Steind. Sitzb. Ak. Wien, Ixx. 1874, p. 507, pi. iv., 



and Ixxi. 1875, p. 83. 

 Ast.ronotus {CicJdasoma) sererus, Eigenm. & Rrav, Ann. Ac. N. Yorli, 



vii. 1894, p. 619. 



Depth of body Ig-l* in the length, length of head 2f-3. 

 Snout longer than postorbital part of head. Diameter of eye 

 3-3^ in the length of head, intcrorbital -nidth 2 2f. Depth 

 of prffiorbital ^-11 the diameter of eye. Maxillary not 

 extending to below the eye; prsemaxiilary processes not 

 extending to above the eye (in the adult); jaws equal 

 anteriorly ; fold of the lower lip continuous, somewhat 

 produced; cheek with 5 or 6 series of scales; 9-11 gill- 

 rakers on the lower part of anterior arch. Scales 36-42 

 i^:i6> 28-30 in a longitudinal series below the lateral line, 

 4 or 5 between lateral line and base of anterior rays of soft 

 dorsal. Dorsal (XV) XVI-XVII 13-14, commencing above 

 the opercular cleft, the spines subequal from the seventh or 

 slightly increasing in length to the last, which is 1— ;i the 

 length of head ; soft fin, when laid back, extending to 

 posterior part of caudal. Anal YII-VIII 12-13 (14). 

 Pectoral as long as the head, extending to above the fifth 

 anal spine; ventral extending to middle of anal. Caudal 

 subtruncate. Caudal peduncle ^-| as long as deep. Oliva- 

 ceous, with obscure darker cross-bars ; a blackish bar from 

 solt dorsal to ]-osterior part of anal, and sometimes another 

 on the base of caudal; head and body with spots or vermi- 

 culations ; vertical fins with dark stripes or scries of spots. 



Brazil ; Guiana. 



Section 13 (IIo2)Iarch(s). 



Body ovate. Scales of the lateral line larger than those 

 above and below it. Dorsal XV 12-13. Anal V 8-10. 



The single species, from South America, appears to be 

 related to C. severum. It leads to the genus Ucn^u. 



47. Cichlosoma psittacum. 



Heros psitfacus, Ilcck. Ann. Wien Mus. ii. 1840, p. 369; Guntli. Cat. 

 Fish. iv. p. 290 (1862) ; Pellegr. Mem. Soc. Zoul. France, xvi. 1UU3, 

 p. 242 (1904). 



