ON SPECIES OF CYNOPOTAMUS. 



BY S. G ARM AN. 



CYNOPOTAMUS GIBBOSUS L. ; C. V. 

 Search for variation in the number of dorsal rays proved 

 without avail, the number eleven is very constant. The 

 range of variation in the anal includes about ten rays, 

 50-60. The scales in the lateral line vary from 57-62 ; 

 in the transverse series between the first ray of the dorsal 

 and that of the anal there are usually sixteen scales above 

 the line and fourteen below, rarely fifteen above and thir- 

 teen below. The humeral and the caudal spots also vary 

 greatly, being more often present on the young ; sometimes 

 they are absent entirely on specimens from localities 

 whence the greater number are well marked. Collected 

 at Coary, Cudajas, Iga, Javary, Jutahy, Lake Hyanuary, 

 Manacapmiru, Manaos, Obydos, Porto do Moz, Kio Negro, 

 Serpa, Silva, Lake Saraca, Surinam, Tabatinga, Uerandu- 

 ba and Villa Bella. 



CYNOPOTAMUS PAUCIRADIATUS. 

 Anacyrtus pauciradiatus Gth. 



A considerable number were received from Lago do 

 Maximo and Villa Bella. On those of a couple of inches in 

 length, the spots on shoulders and tail are distinct. The 

 rays in the anal vary from 44 to 46 ; the scales in the 

 lateral line from 55 to 57 ; and in the transverse line be- 



(ii) 



