184 M'GREGOR. 



millimeters. Color dull white with a few, large spots of burnt umber 

 about the larger end. 



Remarks. — ^As described by Worcester this species is abundant on Ca- 

 villi Island during its breeding season. Several of our specimens have 

 been examined by Dr. Charles W. Eichmond to whom I am indebted 

 for notes on the various species of the genus. The species is named 

 for Mr. Dean C. Worcester through whose interest and efforts it was 

 discovered. 



