FOSSILE SI LURE. 21 



transverse lines : head mailed by bony plates, and 

 terminating in a point behind : dorsal fin mode- 

 rately broad, extending from the beginning of the 

 back to the tail, and without any strong or serrated 

 ray : adipose fin wanting : first ray of the pectoral 

 fins strong and serrated : ventral fins placed at the 

 middle of the abdomen : anal fin commencing at a 

 small distance beyond them, and, like the dorsal, 

 extending nearly to the tail, which is short and 

 rounded : beards eight in number : the lowest pair 

 of those on the upper lip reaching almost as far as 

 the pectoral fins. Native of America. 



FOSSILE SILL 1 RE. 



{Silurus Fossilis. S.fiisco-nigricans, siiblus canus, Coptic sattato, 



pinna anali ad caudam continnata. 

 Blackish-brown Silure, grey beneath, with shielded head, and 



anal fin continued to the tail. 

 Silurus fossilis. S. pinna dorsi breii, aid lunga, cawlcB rotunda. 



Block, t. 3/0. f. 2. 



LENGTH eight inches : body marked by trans- 

 verse linear streaks as in the preceding species : 

 head covered by bony shields, and pointed behind : 

 beards eight in number, and of moderate length : 

 dorsal fin small, and situated towards the beginning 

 of the back : adipose fin wanting : pectoral fins 

 small, with the first ray moderately strong : anal 

 broad and continued from the vent to the beginning 

 of the tail, which is small and rounded. Native of 

 the East Indies, inhabiting lakes, where it is some- 

 times dug out of the mud at the bottom, in the man- 

 ner of the CobitisfossUis. 



