MILLERS THUMB. 9 



there are none which are able to pierce the skin, like some of the fins in the Perch and 

 Ruffe. 



The fin-ray formula in specimens I have examined is as follows : — 



Dorsal 6 spinous + i6. 

 Pectoral ii — 13. 

 Ventral 4. 

 Anal 13. 

 Caudal 11 — 12. 



The rays in all the fins are very thick and elastic ; those of the first dorsal scarcely 

 project above the membrane. 



The Bullhead is most tenacious of life ; hard blows on the head and complete evisceration 

 I have known to be unable to cause speedy extinction of life. It resembles an Eel in this 

 respect. 



