StARKS: ICHTHVOLOGICAL SURVKY AltOUT SaN JuAX ISLANDS. 173 



much more difficult to separate, as the snout in Raja rhina is not so 

 long, the edge of the disk not very concave, and the spines unde- 

 veloped. The very young of Raja rhina differs from that of Raja 

 inornata in the greater concavity towards the angle of the pectoral, 

 the less abruptly protruding sharp snout, and the more acute outer 



Fig. 7. Raja inornala. 9 . 28 in. long. San Francisco. 



-,les of the disk. The outline in Raja inornata is scarcely concave 

 mywhere, except at the tip of the snout. The spines and color are 

 fhe same in the very young of both species. 



In the following table the measurements are made as described 

 in the notes under the table for Raja rhina. The specimens are all 

 from the coast of California. 



