168 ON SOUTH-AMERICAN FISHES OF THE FAMILY CICHLID^. [Mar. 7, 



thoracic region with numerous small blackish spots ; a dark spot 

 or ocellus on the upper half of the base of caudal ; fins unspotted, 

 the dorsal sometimes with a dark margin, the ventral with the 

 2 outer rays dark. 



R. Amazon. 



The type of the species, from the Rio E'egro, measures 350 mm. 

 in total length ; that of C. adspersa, from the Rio Guapore, 

 265 mm. 



16. CrENICICHLA JOHANNA. 



Crenidchla Johanna Heck. Ann. Mus. Wien, ii, 1840, p. 417. 



Cychla fasciata Schomb. Fish. Guiana, ii. p. 141, pi. iv. (1843). 



Crenidchla obtusirostris Giinth. Cat. Fish. iv. p. 305 (18(52). 



Crenidchla Johanna, ys.i\ Johanna Giinth. t. c. p. 306. 



Crenidchla brasiliensis, var. Johanna Pellegr. Mem. Soc. Zool. 

 France, xvi. 1903, p. 383, fig. (1904). 



Depth of body 4-4|- in the length, length of head 3^-3|. 

 Diameter of eye 4|— 5| in the length of head, length of snout 

 3-^-3|-, interorbital width 2|— 3j. Nostril much nearer to tip of 

 snout than to eye. Maxillary extending to below anterior margin 

 of eye ; depth of pra^orbital i-f the diameter of eye. Anterior 

 teeth forming 4 or 5 series in the upper jaw", 3 or 4 in the lower. 

 10 or 11 gill-rakers on the lower part of anterior arch. Scales 



cycloid, 124-133 lyrjsi 97-108 in a longitudinal series below the 

 lateral line, 10 or 11 between last dorsal spine and lateral 

 line, 6 or 7 between iipper and lower lateral lines. Lateral 

 line 26-27 + 13-14. DdrsaJ XXI-XXIV 16-17, the spines 

 subequal or only slightly increasing from about the tenth, the last 

 ^ the length of head. Anal III 11-12. Pectoral |—f, ventral 

 g-|- the length of head. Caudal peduncle as long as or longer 

 than deep. Brownish; 10 or 12 dark cross-bars above the lateral 

 line, obscure or absent in the adult ; body below the lateral line 

 sometimes with alternate light and dark undulating vertical 

 stripes ; dorsal sometimes with a dark margin and light intra- 

 marffinal band. 



EXPLANATION OF THE PLATES. 



Plate XIV. 



Fig. 1. Batracliops punctidatus, p. 156. 



2. Creniciclila ivallacii, p. 163. 



3. „ acutirostris, p. 164. 



Plate XV. 

 Fig. 1. Creniciclila strigata, p. 165. 

 2. „ ornata, p. 167. 



