280 CHHOMIDES. 



* 



6. Acara pulchra. 



Cvclilasoma pulchrum, Gill, Freshwater Fish. Trinid. in Ann. Lye. Nat. 



Hist. New York, 1858, sep. cop. p. 22. 

 Chromis rivulata, Gimth. Proc. Zool. Soc. 1859, p. 418. 



D. J^. A. |. • L. lat. 28. L. transv. 3/9. 



Four (in young specimens three) series of scales on the cheek ; 

 praeorbital wider than the eye in adult specimens, and as mde as the 

 orbit in young ones ; the greatest breadth of the head is contained 

 once and four-fifths in its length. Cleft of the mouth very slightly 

 oblique. A black spot on the middle of the sides ; no caudal spot ; 

 sides of the head with oblique bluish lines, which are replaced by 

 spots of the same colour on and behind the opercles. Young specimens 

 with distinct dark cross-bands, and with a dark spot below the orbit. 



Trinidad. Western Ecuador. 

 a. Pive and a half inches long. "Western Ecuador. From Mr.Fraser's 



Collection. 

 h-d. Half-grown and young. "Western Ecuador. From Mr. Eraser's 

 ("ollection. 



7. Acara dorsigera. 



Hcckel, Brasil. Fluss-Fische, p. 348. 



D. ^. A.l. L. lat. 24. 



Three series of scales on the cheek ; praeorbital half as wide as 

 the orbit (in specimens two inches long) ; the greatest breadth of 

 the head is two-thirds of its length, which is contained once and a 

 quarter in the height of the body. A blackish band runs from the 

 eye to the lateral spot ; . there is another black spot above the latter, 

 on the eighth to ninth dorsal spines. Caudal spot none. Caudal and 

 posterior part of the soft dorsal dotted with white. {Heck.) 



Paraguay. 



8. Acara viridio. 



Hechel, Brasil. Fluss-Fische, p. 343. 



D.il. A.f L. lat. 26. 



Three series of scales on the cheek ; praeorbital as wide as the orbit 

 (in specimens five and a half inches long); the greatest breadth of 

 the head is two-thirds of its length. Cleft of the mouth horizontal. 

 Brownish, with six darker cros-;-bands ; a seventh round the free 

 portion of the tail ; a black spot on the middle of the sides ; another 

 smaller one superiorly at the root of the caudal ; a light streak be- 

 tween the eye and nostril. Fins immaculate. {Heel'.) 



Ditches near the town of Matagrosso. 



9. Acara pallida. 

 Hcckel, Brasil. Fluss-Fische, p. 347. 



D.l^. A.|. L. lat. 20. 

 Throe series of scales on the check ; i)ncorbital half as wide as the 



