442 Mr. C. T. Regan on the Fishes of the 



the last about as long as the head ; anterior soft rays con- 

 siderably produced ; middle part of the fin scalv at the base. 

 Anal Vi 26-29 (V-VII 24-29). Pectoral as" long as the 

 head; ventral produced into a long filament. Caudal trun- 

 cate, the outer rays sometimes produced. Caudal peduncle 

 5-^ as long as deep. Silvery with 4 well-marked blackish 

 cross-bars^ the first through the eye, the second from spinous 

 dorsal to origin of anal, the third from soft dorsal to anal, 

 the fourth on the base of caudal ; between these narrower 

 and less distinct intermediate bars ; soft vertical fins some- 

 times with alternate light and dark stripes. 

 11. Amazon. 



1. (102 mm.) R. Ciipai. 



2. (81 mm.) Tabatiiiga. Mas. Comp. Zool. 



3. (99 mm.) INIanaos. Mr. J. C. Antony. 



4. (61 mm.) Touantins. Paris Mus. 

 5-7. (.31-60 mm.) Warajo Id. Dr. E. A. Goldi. 



2. Plero/jhi/Ilwn altum. 



Pf.eroph/llum altum, Pellegr. Bull. Mus. Paris, 1903, p. 125 ; M^m. 

 Soc. Zool. France, xvi. 1903, p. 252, pi. iv. fig. 4 (1904). 



Depth of body equal to its length. Cheek with 6-7 

 series of scales ; 11 gill-rakers on the lower part of anterior 

 arch. Scales about 55 |^, 41-47 in a longitudinal series 

 below the lateral line. Dorsal XII-XIII 27-30. Anal 

 (V) VI 28-32. Caudal peduncle | as long as deep. In 

 other characters similar to the preceding species. 



R. Orinoco. 



1-2. (83 and 85 mm.) co-types of the 11. Orinoco. Paris Museum. 



.-pecies. 



APPENDIX. 



The British Museum has just received a series of the 

 Mexican Cichlids collected and described by Dr. S. E. Meek. 

 After examination of these it seems useful to make a few 

 additions and corrections. 



Cichlosoma fenestratum (supi'ci, p. 227). 

 To the synonymy add : — 



Cichlasojna melanurmn (part.), Meek, Zool. Pub. Coluaibian Mus. v. 

 1904, p. 219. 



