MCERA. 



349 



This genus was founded by Dr. Leach to receive 

 Montagu's Cancer (Gammarus) grossimanus ; but it was 

 ignored by Milne Edwards and most authors, until Dana 

 reinstated it ; unfortunately, however (no doubt from 

 Leach's inadequate description), he attributed the cha- 

 racter of this genus to Leach's type of Melita, and on the 

 other hand described his genus Melita not in accordance 

 with the typical species. 



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