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Crustacea. 



am quite convinced that the half of the species upon our coasts 

 has not been examined. Works that would be of service to 

 those desirous of studying this subject would be— for the Stalk- 

 eyed, 4 ' Bell's British Stalk-eyed Crustacea ; " for the Sessile- 

 eyed, " Spence Bate and Westwood's Monograph ; " and for the 

 Entomostracans, " Baird's " (Eay. Soc.) ; while for the 

 Embryology, etc., " Claus' Zoology" and " Fritz Miiller's 

 Facts and Arguments for Darwin," which last treats of this 

 matter only, would be invaluable. 



