22 The Catopterus gracilis. 



ries of raylets inserted obliquely upon the first or anterior ray, pro- 

 ducing a serrated or denticulate appearance. The succeeding rays 

 have an articulate appearance and are finely subdivided toward 

 their extremities. The following list of the number of rays in each 

 fin may serve to give an idea of their relative size : 



Pectoral, large and strong iotoi2. 



Ventral about 8. 



Dorsal lo to 12. 



Anal 20 to 30. 



Caudal 30 to 40. 



