ARRANGEMENT OF LATHAM. 31 



divisions are two,— namely, Cloven-footed and Web- 

 footed. The first of these he divides into seventeen orders, 

 and eighty-five genera ; the second into 7iine orders and 

 twenty-eight genera. This system does not, however, seem 

 to have obtained much attention ; yet the number of the 

 genera nearly coincides with that of Dr. Latham, who ap- 

 pears to have followed and improved upon Mr. Pennant's 

 arrangement. His divisions and orders are similar in name 

 and number to those of Mr. Pennant ; but he, nevertheless, 

 differs from him in many particulars ; his genera are also 

 more numerous. The whole number of birds enumerated 

 by Linn/Eus specifically, is only 930, while those described 

 by Dr. Latham in his recently published work amount to 

 about 5000 ! And future discoveries must necessarily in- 

 crease them. 



But it should be observed, that although Dr. Latham has 

 added to the number of the genera ; this addition arises in 

 part from his dividing some of the genera of Linnaeus into 

 two or more. Thus the genus Motacilla or Warbler, he 

 has divided into Motacilla or Wagtail, and Sylvia or 

 Warbler ; Tetrao or Partridge he has divided into three, 

 namely, Tinamus or Tinamou, Tetrao or Grouse, and 

 Perdix or Partridge; Struthio he has also divided into 

 four, — Struthio or African Ostrich, Casuarius or Casso- 

 wary, Didus or Dodo, and Rhea or American Ostrich ; 

 he has also divided the Snipk, Scolopax^ from the Curlew, 

 which he calls iVumcm'Mj ; he has, again, erected the Grebe, 

 Podiceps, the Gallinule, Gallinula, and the Guillemot, 

 Uria, into separate genera; he has also separated the 

 Phalarope, Phalaropus, from Tringa or Lapwing, &c. 

 Besides which, he has added other new genera, as will be 

 seen on reference to the following synopsis of his work. 

 In justice to Dr. Latham it ought to be stated, that there 



