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PKEFACE. 



ing names still more than Muller, and with less reason. 

 It is a pity zoologists do not take a lesson from their fellow 

 labourers in the field of Nature, the botanists, in this 

 respect. Mr. Gray has increased the confusion by giving 

 fragments of descriptions instead of generic and specific 

 characters, probably from carrying too far a laudable desire 

 for brevity. His essay deserves praise, however, for re- 

 cording many new foreign habitats of the beautiful animals 

 he catalogues. 



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