On the arrangement of the genera of Birds. 393 



**** Subfam. Buteonina. 



Ictinia. Vieill. — Circus. Aud. — Pernis. Cuv. — Buteo. Auct. 



***** Subfam. Milvina. 



Elanus. Sav. — Nauclerus. — Milvus. Auct, 



IV. Fam. Strigid^e. Leach. [Gen. Strix. Linn.] 

 * Subfam. Noctuina. 



Surnia. Dum. — Noctua. Sav. 

 ** Subfam. Bubonina. 

 Scops. Sav. — Bubo. Cuv. 

 *** Subfam. Asionina. 

 Asio. Antiq. [Otus. Cuv.'] 

 **** Subfam. Strigiiia. 

 Ulula. Cuv. — Strix. Auct, 

 ***** Subfam. Syrniana. 

 Syrnium. Sav. 



V. Fam. ? 



ORDO II. INSESSORES. [Picte.-^Passeres. Linn.l 

 Tribus. I. FissiuosTREs. Cuv. 



I. Fam. Mekopid.e. [Gen. Merops. Linn.] 



Merops. Linn. [A piaster. Briss.~\ 



II. Fam. HiuuNDiNiDiE. [Gen. Hirundo. Linn.] 



Cypselus. III. [Apus. Cuv. Micropus. Meyer.'] — Hirundo. 

 Auct. 



III. Fam. Caprimulgid^e. [Gen. Caprimulgus. Linn.] 

 Caprimulgus. Auct. — Podargus. Cuv. — ^gotheles.* — Stea- 



tornis. — Nyctibius. Vieill. 



IV. Fam. ToDiDiE. [Gen. Todus. Linn.] 



Eurylaimus. Horsf. — Eurystomus. Vieill. [Colaris. Cuv."]— 

 Todus. Auct. 



* This is a New Holland genus, which has been characterized by Dr. 

 Horsfield and myself, in a paper lately read before the Linnean Society on the 

 Australian Birds in the Society's Collection. 



