1905.] FISHES OF THE FAMILY CICHLID^. 153 



anterior rays of soft dorsal. Dorsal XVI (XVII 8) 9, commencing 

 above the opercular cleft, the spines not or only slightly increasing- 

 after the fifth, the last ^-f the length of head ; soft fin extending 

 to anterior i of caudal. ' Anal III (7) 8. Soft dorsal and anal 

 scaleless. Pectoral longer than the head; ventral extending 

 about to origin of anal. Cavidal rounded. Caudal peduncle as 

 long as deep. Brownish, with a series of darker blotches on and 

 above the lateral line and another more distinct series below the 

 lateral line ; a dark stripe with white edges from eye to mouth ; 

 posterior part of spinous dorsal, soft dorsal, and middle part of 

 caudal with alternate light and dark stripes or series of spots ; 

 anal with a blackish edge. 

 R. Amazon ; Guiana. 

 1. (104 mill.) type of the species. E. Essequibo. Mr. Elirhardt. 



2. Obenacara maculata, 



Dicrossus macwZai^ifs Steind. Sitzb. Ak. Wien, Ixxi. 1875, p. 102; 

 Pellegr. Mem. Soc. Zool. France, xvi. 1903, p. 170 (1904). 



Depth of body 3^4 in the length, length of head a little more 

 than 3. Snout shorter than eye, the diameter of which is 2| in 

 the length of head and a little greater than the interorbital 

 width. Depth of preeorbital \^ the diameter of eye. Maxillary 

 extending to below the eye ; jaws equal anteriorly ; cheek with 

 3 series of scales, none on the prfeoperculum. Scales 26 ^, 1 

 between lateral line and anterior rays of soft dorsal. Dorsal 

 XIV 9, the spines only slightlj^ increasing after the fifth, the 

 last more than ^ the length of head ; soft fin extending to or 

 beyond base of caudal. Anal III 7. Pectoral as long as the 

 head ; ventral extending beyond origin of anal, sometimes to its 

 posterior end. Caudal rounded. Caudal peduncle longer than 

 deep. Colour as in G. inmcUdata, the body with 2 series of 

 dark blotches, a dark stripe from eye to mouth, the vertical fins 

 with alternate light and dark spots. 



R. Amazon. 



The types described by Steindachner measure up to 60 mm. in 

 total length. 



Batrachops. 



Batracho'ps Heck. Ann. Mus. Wien, ii. 1840, p. 432. 



Grenicichla (part.) Gunth. Cat. Fish. iv. p. 305 (1862) ; Eigenm. 

 t Bray, Ann. Ac. N. York, vii. 1894, p. 620; Pellegr. Mem. Soc. 

 Zool. France, xvi. 1903, p. 372 (1904). 



Boggiania Perugia, Ann. Mus. Genova, (2) xviii. 1897, p. 148 ; 

 Pellegr. t. c. p. 371. 



Body elongate, little compressed ; scales moderate, ctenoid. 

 Two lateral lines ; scales of the lateral line larger than the rest. 

 Mouth moderate or large; lower jaw projecting; maxillary 

 exposed distally ; teeth conical, in 2 or 3 series in each jaw, the 

 outermost series enlarged, especially in the lower jaw; none of 



