58 
Psyche 
[March 
families, and absence from clearly derivative forms, suggests that the 
presence of the Y sulcus is an ancestral feature of Staphyliniformia. 
In Glypholoma it is therefore probably best interpreted as a primitive 
condition which has been lost in other Omaliinae. 
Acknowledgments 
I wish to thank P. M. Hammond for calling my attention to the 
description of Lathrimaeodes , and T. F. Hlavac and J. F. Lawrence 
for reading and commenting on the manuscript. 
References 
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