154 



CALLlCainYS. 



(pi. V. fig. 2), it is remarked, that it was found in 

 the province of Corrientes, in still waters, always 

 at the bottom, in the sand or mud. They conceal 

 themselves under and among the aquatic plants, 

 swdmming slowly, and feeding on the small worms 

 and insects which may fall into the water. They 

 are not used as food, and will not bite at a baited 



. lOok. This species had been kept out of the water 



for eight or ten hours without appearing to suffer.* 



* Quoted from Valenc. xv. p. 315 and 316. 



