20 TRUE CRABS OF MONTEREY BAY 



I have had the opportunity of examining two specimens, both males, 

 in the possession of W. F. Allen, who said that they were obtained in con- 

 siderable numbers by fishermen seining in moderately deep water on a 

 muddy bottom off the mouth of the Salinas River. These agree well with 

 Holmes's description, but possess a pair of very prominent tubercles on the 

 sternum of the segment bearing the chelipeds, not mentioned by him. 



I have followed Miss Rathbun* in uniting Platymera with Mursia. 



U. S. Fish Commission Bulletin for 1903, 



