American Cichlid Genus Ciclilosoma, (&c. 441 



undulating longitudinal stripes and -oitli 9 dark cros^sbars, 

 of uhich the first, tlirougli the eye, the fifth, in the middle of 

 the length of the body, aud the ninth, on the base of the 

 caudal, are more strongly marked than the others ; soft 

 vertical fins with alternate light and dark spots. 

 R. Amazon. 



1. (110 mm.) R. Ciipai. 



2. (135 mm.) R. Nep^ro. Mr. J. C. Antony, 



3. (170 mm.) Teffe. Dr. J. Bach. 



4. (130 mm.) Manaos. Paris Mus. 



Pellegrin gives the name aquifasciata to a variety -without 

 longitadinal stripes and with all the cross-bars equally 

 distinct. 



Pt 



EROPHYLLU.M. 



Pterophyllum, Heck. Ann. Mus. Wien, ii. 1840, p. 334 ; Glinth. Cat. 



Fish. iv. p. 316 (1862) ; Steiud. Sitzb. Ak. Vv ien, Ixxi. 1875, p. 136 ; 



Eigenm. & Brav, Aon. Ac. N.York, vii. 1894, p. 624; I'ellegr. 



Mem. Soc. Zool.'France, xvi. 1903, p. 251 (1904). 

 Plataxoides, Casteln. Anim. Am. Sud, Poiss. p. 21, pi. xi. fig. 3 (1855). 



Very closely allied to Symphysudon, which it resembles in 

 the deep nearly circular body and the small scales, but 

 differing in the dentition, the teeth extending on to the sides 

 of the jaws. Dorsal with XI-XIII 24-30 rays, anal with 

 V-VII 24-3.2. 



K. Amazon ; R. Orinoco. 



Two species. 



1. Pterophjllum scalare. 



TJatax scalaris, Cuv. & Ya'l. Hist. Xat. Poiss. vii. p. 237 (1831). 



Pterophyllum scalare, Ileck. Ann. Mus. "Wien, ii. 1840, p. 335 : Giinth. 

 Cat. Fish. iv. p. 316 (1862); Steiud. Sitzb. Ak. Wien, Ixxi. 1875, 

 p. 136; PellegT. Mt^m. Soc. Zool. France, xvi. 1903, p. 251 (1904). 



Plataxoides Dumerili, Casteln. Anim. Am. Sud, Poiss. p. 21, pi. xi. 

 fig. 3 (1855). 



Deptb of body a little less than the length, which is 2|-3 

 the length of head. Snout not longer than eye, the diameter 

 of which is 2§-3 in the length of head and equal to the 

 interorbital width. Depth of praeorbital ^ the diameter of 

 eye or less. Mouth small, oblique; maxillary extending to 

 below the nostril ; fold, of the lower lip continuous ; cheek 

 with 4 or 5 series of scales; 12-14 gill-rakers on the 

 lower part of anterior arch. Scales 40-47 ^rbre? 33-38 in a 

 longitudinal series below the lateral line. Lateral line 

 17-19 -i- 9-11. Dorsal XI-XllI 23-27, the spines graduated. 



