Fishen and Riptihs from S)iUh Aoierha. 2S5 



forked. Caiulal peduncle a little lon;^er than deep. Scales 

 40-42 ^-^~^, 6 between the lateral line and the ventral fin. 

 Olive above, whitish beneath; 7 or 8 darker cross-birs, 

 ending in points on the sides of the ventral surface; three 

 large round black sp )ts over thcso bars, the first beljw the 

 dorsal fin, the tliird at the base of the caudal. 



Total length 205 milliin. 



In the young (85 niillim.) tlie depth of the body equals 

 the length of tlie head and is contained 3^ times in the total, 

 the diameter of the eye is 3| times in the length of the head 

 and H in the interocular width, and the three round bla:k 

 spots are proportionally larger. 



Several specimens from tlie Rio Coxipo, Mitto Gros^o. 



This species is most nearly allied to L. f.iscialas, Bl., 

 from which it differs in the somewhat shorter snout, the white 

 teeth, and the coloration. L. Frederici^ BL, differs in having 

 fewer scales in a vertical series. 



Parodon Gestri. 



Depth of body equal to length of head, 4 times in total 

 length. Eye ])erfectly lateral, in the middle of the length of 

 the head, its diameter 4j times in the length of the hea 1, 1^ 

 in the interocular width ; snout strongly projecting beyond 

 the mouth ; prfemaxillary teeth 8, as in P. suhorbitalis, with 

 12 to 1.5 denticles, mamillaries and mandibulars 2 on each side. 

 Dorsal III 9, a little nearer the root of the caudal fin than 

 the end of the snout, its longest ray | the length of the head. 

 Anal 117. Pectoral as long as the head, not reaching the 

 base of the ventral ; latter | the length of tlie head, inserted 

 under the second half of the dorsal. Caudal forked. Caudal 

 peduncle as long as deep. Scales 3.5 |t, 4 between the lateral 

 line and the root of the ventral. Olive above, whitish be- 

 neath ; 15 dark vertical rhombs close together across the 

 lateral line. 



Total length 60 millim. 



A single specimen from the Rio Coxipo, Matto Grosso. 



This new species, which I have much pleasure in naming 

 after Dr. R. Gestro, of the Genoa Civic Museum, comes near 

 P. IJilani, Reinhardt, Innn which it differs in the shorter 

 body, the more prominent snout, the position of the ventraU 

 entirely below tlie dorsal, and tiie coloration. 



Curimatus nigroUenia. 

 Depth of body equal to length of head, 3i times in total 

 Ann. (0 Mag. N. Hist. Sor. 7. Vol. ix. 20 



