CLASS PISCES. 2(59 



Some of them even have other scaly plates on the 

 flanks, and the spine in question placed so far behind 

 that it thrusts the second dorsal and anal towards the 

 latter part of the tail. Such is the Centriscus scutatus, 

 L., Bl. 123. 2. 



Others are intermediate between this disposition 

 and that of a common centriscus. Their cuirass 

 covers but half the back, Centriscus velitaris, Pall. 

 Spic. VIII. iv. 8. 



Both these species are from the Indian Ocean. 



