558 Mr. Swainson on several new groups in Ornithology. 



'CAMPYLOPTERUS. 



Rostrum longiusculum, sub-arcualiim. 



Alw falcatw ; remigum primarum scapia dilatuto-compressis. 



Cauda rotundata, vel gradata. 



Types. \. T. latipcnuis. 1. falcatus, Sw., Zool. 111. 



Bill rather long and slightly curved. Wings falcated, the shafts 

 or scapes of the primary quills dilated and compressed. Tail 

 rounded or graduated. 



LAMPORNIS. 



Rostrum sub-arcuatum. 



Cauda brevis, aiquulis. 



Types. 1. T. mango, L. 2. pella, L. 3. niger. Sw., Zoo]. 111. 



Bill arched. Tail short, even. 



The foregoing characters are taken from the typical examples 

 of the five sub-families or secondary divisions, under which all 

 the known species will arrange themselves. Whether it is ex- 

 pedient that the inferior groups here designated as types of form, 

 should be characterized as genera, may be a subject for future 

 consideration. In the above arrangement, I have found it im- 

 possible to apply the nomenclature of Brisson and Lacepcde with 

 any advantage. Polijtmus has never been defined, and is appli- 

 cable to two of the foregoing groups. Mcllisuga or Orthorhyn- 

 chus, as given to the typical division, is manifestly objectionable. 

 Besides, M. Vieillot has used the first of these names in a dif- 

 ferent sense. The Trochilidce appear united to the Nectariniadce, 

 by T. pella ; and to the Promeropida', by T. siiperciliosus. 

 I am already acquainted with more than one hundred species of 

 this family. 



Family Muscicapida. 



-TYRANNL A. 



Rostrum mediocre^ deprcssum, mandibulcc supcrioris apice abrupti 

 adunco. 



