iv ADVERTISEMENT. 



of the whole ascertained species. In the class of BIRDS 

 Temminck has been taken for the guide ; and in ad- 

 dition to the European species described by that ce- 

 lebrated ornithologist, the characters, and at least 

 one typical species, of all the extra-European genera 

 have been given. The arrangement of Baron Cuvier 

 has been followed in the classes of REPTILES and 

 FISHES. 



The classes MOLLUSCA and CONCHIFERA, includ- 

 ing the fossil genera, and the class TUNIC AT A, have 

 been adopted from M. Lamarck ; the CIRRIPEDA 

 and ANNELIDES chiefly from Latreille the CRUSTA- 

 CEA from the same author, Dr Leach, and Desmarest 

 the MYRIAPODA from Latreille and the characters 

 of the INSECTA have been almost wholly taken from 

 the writings of that distinguished entomologist. In 

 this class, however, in place of detailed generic cha- 

 racters, room has only been found for analytical tables. 

 These, with the descriptions of the families and tribes, 

 will, it is hoped, enable the student or traveller to re- 

 fer any insect met with, if not to its proper genus, 

 at least to the tribe or family to which it belongs. 

 The class ACALEPHA is adopted from Cuvier the 

 ENTOZOA from the same author and Rudolphi and 

 the POLYPI and INFUSORIA chiefly from Lamarck. 



In the whole work, indeed, it has been a principal 

 object to give, in the arrangement of the different clas- 



