196 



It was hardly to be expected that Mr. Lower's errors 

 should have been confined to the comparatively few species, 

 of which I examined the types ; and I have been able to col- 

 lect some further instances. Here, of course, demonstrative 

 proof is not possible, but I have been careful to include only 

 examples in which the circumstantial evidence is strong ; in 

 some of them it appears particularly strong. Of course, I 

 may possibly be in error in one or two instances. 



* If I am right in this identification, Mr. Lower's description is 

 inaccurate in some particulars. The very peculiar bidentate frontal 

 process does not leave much room for doubt. 



