12 ON SPECIES OF CYNOPOTAMUS. 
tvveen the anterior rays of dorsal and anal there are com- 
monly 12 scales above the line and 12 below ; an occasional 
specimen reaches 13. 
Cynopotamus molossus Kner. 
On such as were examined the formula stood as follows : 
D. 11, A. 43-47, L.l. 46, L.tr. -^- Humeral and 
caudal spots distinct on the numerous small specimens 
from Serpa and Jutahy. 
Cynopotamus microlepis. 
E]Jicyrtus microlepis Rht. 
On specimens from Obydos there are fifty- seven rays 
in the anal, ninety-seven scales in the lateral line, and in 
the transverse series there are twenty-four above the line 
and twenty-three below it. 
Cynopotamus affinis. 
Anacyrtus affinis Gth. 
Anal rays varying from 53 to 57, scales in the lateral 
line from 73 to 80, and in the transverse series between 
dorsal and anal there are 20 to 22 scales above the line 
and 17 to 19 below it. Humeral and caudal spots small 
to absent. Collected at Iga, Coary, Javary, Jose Fer- 
nandez, Jutahy, Lago Alexo, Lake Hyanuary, Lake Sar- 
aca, Manacapurua, Sao Paolo and Serpa. 
Cynopotamus myersii. 
liceboides myersii Gill. 
D. 11, A. 51-56, L.l. 88-95, L.tr. Igf- 
From the number of specimens collected and the locali- 
ties this would appear to be one of the most widely dis- 
tributed and plentiful of these fishes. Hab. Coarj^ Fon- 
tcl)oa, Javary, Jutahy, Jose Fernandez, Lago Alexo, 
