486 Remarks on Zoological Classification. 



In the Aves I have leaned to Swainson's Divisions, but his 

 Families seem frequently too small, nor am I now satisfied, 

 that I have sufficiently consolidated them : — 



Meropidae are (Trogonidae) -Haley onidae -Meropidae ; 



Trochilidae are Trochilidae-cinnyridae-promeropidaB ; 



Meliphagadae are (Paradiseadae) -Meliphagadae ; 



Muscicapadae are Ampelidae-Muscicapadae-Laniadae ;. 



Corvidae are Corvidae-Sturnidae ; 



Psittacidae are Psittacidae -Picidse ; 



Cuculidae are Certhiadae-Cuculidae. 



I have not any satisfactory reference for the families of the 

 Mammalia, which require new-casting, and which seem to 

 have retrograded since the arrangements of Desmarest, in con- 

 sequence of the Abuse of Characteristic Nomenclature. 



Between Equidae and Suidae may lie Hippopotamus- mas- 

 todon-elephas-tapirus-pala&otherium-rhinoceros. 



Didelphidae and Kanguridae may be compound, and the 

 parts lie in different Alliances. 



From Felidae to Melesidae we may pass thus, Hyaena-canis- 

 vi verra-p ar adoxurus . 



For Lumbricales, and Euniceales consult Milne Edwards; 

 Lumbricales are : — 



Cephalobranches; Arenicoliens, Terricoles; Suceurs; Gas- 

 terobranchidae. 

 Euniceales are : — 



Cephalees § A. ; Nereidiens, Euniciens, Amphynomiens- 

 aphrodisiens ; Sipunculi (Agassiz). 



There will not be any difficulty in recognizing the Families 

 intended among the Insecta ; an attempt is made at a more 

 natural distribution of the great Groups ; Lamarck seems to 

 have been underestimated here. Mr. James Wilson in his 

 Treatise gives the Diptera from Meigen, who seems to have 

 divided the families much too far and beyond Lamarck : — 



Hippoboscadae are Nycteribia-coriaceae ; 



Muscadae are Trineurae-muscides ; 



Conopsidae are Stomoxidae-conopsariae ; 



Others are still more broken down. 

 Gamasales are from Duges : — 



Acaridae are Bdelleae-acareae ; 

 Gamasidae are Ixodeae-gamaseae. 

 Furculariales are from Ehrenberg : 



Monotrocha, Schizotrocha, Polytrocha, Zygotrocha nuda, 

 and Zygotrocha loricata. 



Thurlhy Hall, Lincoln, 

 June 13*A, 1838. 



