DR. trail's silurus. 187 



come among tliem ; but in tlie Transactions of the 

 Wemerian Society, there is a description and figure 

 of a Silurus which does not seem to be alluded to 

 in the volumes of Valenciennes. Dr. Trail has 

 obligingly furnished us with his original notes and 

 drawing, and a copy from the latter is now intro- 

 duced. 



